<?xml version="1.0" encoding="US-ASCII"?>
<!--XBRL Document Created with Wdesk from Workiva-->
<!-- -->
<link:linkbase xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <link:roleRef roleURI="http://www.northropgrumman.com/role/A2018ImpactOfAccountingMethodChange" xlink:href="noc-20181231.xsd#A2018ImpactOfAccountingMethodChange" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/A2018ImpactOfAccountingMethodChangeDetails1" xlink:href="noc-20181231.xsd#A2018ImpactOfAccountingMethodChangeDetails1" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/A2018ImpactOfAccountingMethodChangeDetails2" xlink:href="noc-20181231.xsd#A2018ImpactOfAccountingMethodChangeDetails2" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/A2018ImpactOfAccountingMethodChangeDetails3" xlink:href="noc-20181231.xsd#A2018ImpactOfAccountingMethodChangeDetails3" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/A2018ImpactOfAccountingMethodChangeDetails4" xlink:href="noc-20181231.xsd#A2018ImpactOfAccountingMethodChangeDetails4" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/A2018ImpactOfAccountingMethodChangesTables" xlink:href="noc-20181231.xsd#A2018ImpactOfAccountingMethodChangesTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/AccountsReceivableNet" xlink:href="noc-20181231.xsd#AccountsReceivableNet" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/AccountsReceivableNetDetails" xlink:href="noc-20181231.xsd#AccountsReceivableNetDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/AccountsReceivableNetTables" xlink:href="noc-20181231.xsd#AccountsReceivableNetTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/AcquisitionOfOrbitalAtk" xlink:href="noc-20181231.xsd#AcquisitionOfOrbitalAtk" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/AcquisitionOfOrbitalAtkAcquisitionOfOrbitalAtkDetails2" xlink:href="noc-20181231.xsd#AcquisitionOfOrbitalAtkAcquisitionOfOrbitalAtkDetails2" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/AcquisitionOfOrbitalAtkAcquisitionOfOrbitalAtkDetails3" xlink:href="noc-20181231.xsd#AcquisitionOfOrbitalAtkAcquisitionOfOrbitalAtkDetails3" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/AcquisitionOfOrbitalAtkDetails1" xlink:href="noc-20181231.xsd#AcquisitionOfOrbitalAtkDetails1" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/AcquisitionOfOrbitalAtkProFormaFinancialInformationDetails" xlink:href="noc-20181231.xsd#AcquisitionOfOrbitalAtkProFormaFinancialInformationDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/AcquisitionOfOrbitalAtkProFormaFinancialInformationTables" xlink:href="noc-20181231.xsd#AcquisitionOfOrbitalAtkProFormaFinancialInformationTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/AcquisitionOfOrbitalAtkPurchasePriceTables" xlink:href="noc-20181231.xsd#AcquisitionOfOrbitalAtkPurchasePriceTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/AcquisitionOfOrbitalAtkScheduleOfFiniteLivedIntangibleAssetsTables" xlink:href="noc-20181231.xsd#AcquisitionOfOrbitalAtkScheduleOfFiniteLivedIntangibleAssetsTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/CommitmentsAndContingencies" xlink:href="noc-20181231.xsd#CommitmentsAndContingencies" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/CommitmentsAndContingenciesDetails1" xlink:href="noc-20181231.xsd#CommitmentsAndContingenciesDetails1" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/CommitmentsAndContingenciesDetails2" xlink:href="noc-20181231.xsd#CommitmentsAndContingenciesDetails2" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/CommitmentsAndContingenciesTables" xlink:href="noc-20181231.xsd#CommitmentsAndContingenciesTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/ConsolidatedStatementsOfCashFlows" xlink:href="noc-20181231.xsd#ConsolidatedStatementsOfCashFlows" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/ConsolidatedStatementsOfChangesInShareholdersEquity" xlink:href="noc-20181231.xsd#ConsolidatedStatementsOfChangesInShareholdersEquity" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/ConsolidatedStatementsOfEarningsAndComprehensiveIncome" xlink:href="noc-20181231.xsd#ConsolidatedStatementsOfEarningsAndComprehensiveIncome" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/ConsolidatedStatementsOfEarningsAndComprehensiveIncomeParenthetical" xlink:href="noc-20181231.xsd#ConsolidatedStatementsOfEarningsAndComprehensiveIncomeParenthetical" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/ConsolidatedStatementsOfFinancialPosition" xlink:href="noc-20181231.xsd#ConsolidatedStatementsOfFinancialPosition" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/ConsolidatedStatementsOfFinancialPositionParenthetical" xlink:href="noc-20181231.xsd#ConsolidatedStatementsOfFinancialPositionParenthetical" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/DocumentAndEntityInformation" xlink:href="noc-20181231.xsd#DocumentAndEntityInformation" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/EarningsPerShareShareRepurchasesAndDividendsOnCommonStock" xlink:href="noc-20181231.xsd#EarningsPerShareShareRepurchasesAndDividendsOnCommonStock" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/EarningsPerShareShareRepurchasesAndDividendsOnCommonStockDetails1" xlink:href="noc-20181231.xsd#EarningsPerShareShareRepurchasesAndDividendsOnCommonStockDetails1" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/EarningsPerShareShareRepurchasesAndDividendsOnCommonStockDetails2" xlink:href="noc-20181231.xsd#EarningsPerShareShareRepurchasesAndDividendsOnCommonStockDetails2" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/EarningsPerShareShareRepurchasesAndDividendsOnCommonStockTables" xlink:href="noc-20181231.xsd#EarningsPerShareShareRepurchasesAndDividendsOnCommonStockTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/FairValueOfFinancialInstruments" xlink:href="noc-20181231.xsd#FairValueOfFinancialInstruments" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/FairValueOfFinancialInstrumentsDetails1" xlink:href="noc-20181231.xsd#FairValueOfFinancialInstrumentsDetails1" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/FairValueOfFinancialInstrumentsDetails2" xlink:href="noc-20181231.xsd#FairValueOfFinancialInstrumentsDetails2" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/FairValueOfFinancialInstrumentsTables" xlink:href="noc-20181231.xsd#FairValueOfFinancialInstrumentsTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/GoodwillAndOtherPurchasedIntangibleAssets" xlink:href="noc-20181231.xsd#GoodwillAndOtherPurchasedIntangibleAssets" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/GoodwillAndOtherPurchasedIntangibleAssetsDetails1" xlink:href="noc-20181231.xsd#GoodwillAndOtherPurchasedIntangibleAssetsDetails1" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/GoodwillAndOtherPurchasedIntangibleAssetsDetails2" xlink:href="noc-20181231.xsd#GoodwillAndOtherPurchasedIntangibleAssetsDetails2" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/GoodwillAndOtherPurchasedIntangibleAssetsDetails3" xlink:href="noc-20181231.xsd#GoodwillAndOtherPurchasedIntangibleAssetsDetails3" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/GoodwillAndOtherPurchasedIntangibleAssetsGoodwillAndOtherPurchasedIntangibleAssetsDetails4" xlink:href="noc-20181231.xsd#GoodwillAndOtherPurchasedIntangibleAssetsGoodwillAndOtherPurchasedIntangibleAssetsDetails4" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/GoodwillAndOtherPurchasedIntangibleAssetsTables" xlink:href="noc-20181231.xsd#GoodwillAndOtherPurchasedIntangibleAssetsTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/IncomeTaxes" xlink:href="noc-20181231.xsd#IncomeTaxes" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/IncomeTaxesDetails1" xlink:href="noc-20181231.xsd#IncomeTaxesDetails1" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/IncomeTaxesDetails2" xlink:href="noc-20181231.xsd#IncomeTaxesDetails2" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/IncomeTaxesDetails3" xlink:href="noc-20181231.xsd#IncomeTaxesDetails3" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/IncomeTaxesDetails4" xlink:href="noc-20181231.xsd#IncomeTaxesDetails4" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/IncomeTaxesDetails5" xlink:href="noc-20181231.xsd#IncomeTaxesDetails5" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/IncomeTaxesDetails6" xlink:href="noc-20181231.xsd#IncomeTaxesDetails6" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/IncomeTaxesTables" xlink:href="noc-20181231.xsd#IncomeTaxesTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/InventoriedCostsNet" xlink:href="noc-20181231.xsd#InventoriedCostsNet" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/InventoriedCostsNetDetails" xlink:href="noc-20181231.xsd#InventoriedCostsNetDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/InventoriedCostsNetTables" xlink:href="noc-20181231.xsd#InventoriedCostsNetTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/InvestigationsClaimsAndLitigation" xlink:href="noc-20181231.xsd#InvestigationsClaimsAndLitigation" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/InvestigationsClaimsAndLitigationInvestigationsClaimsAndLitigationDetails" xlink:href="noc-20181231.xsd#InvestigationsClaimsAndLitigationInvestigationsClaimsAndLitigationDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/LongTermDebt" xlink:href="noc-20181231.xsd#LongTermDebt" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/LongTermDebtDetails1" xlink:href="noc-20181231.xsd#LongTermDebtDetails1" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/LongTermDebtDetails2" xlink:href="noc-20181231.xsd#LongTermDebtDetails2" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/LongTermDebtDetails3" xlink:href="noc-20181231.xsd#LongTermDebtDetails3" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/LongTermDebtDetails4" xlink:href="noc-20181231.xsd#LongTermDebtDetails4" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/LongTermDebtTables" xlink:href="noc-20181231.xsd#LongTermDebtTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/Recast2017And2016FinancialInformation" xlink:href="noc-20181231.xsd#Recast2017And2016FinancialInformation" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/Recast2017And2016FinancialInformationDetails1" xlink:href="noc-20181231.xsd#Recast2017And2016FinancialInformationDetails1" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/Recast2017And2016FinancialInformationDetails2" xlink:href="noc-20181231.xsd#Recast2017And2016FinancialInformationDetails2" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/Recast2017And2016FinancialInformationDetails3" xlink:href="noc-20181231.xsd#Recast2017And2016FinancialInformationDetails3" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/Recast2017And2016FinancialInformationDetails4" xlink:href="noc-20181231.xsd#Recast2017And2016FinancialInformationDetails4" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/Recast2017And2016FinancialInformationTables" xlink:href="noc-20181231.xsd#Recast2017And2016FinancialInformationTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/RetirementBenefits" xlink:href="noc-20181231.xsd#RetirementBenefits" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/RetirementBenefitsDetails1" xlink:href="noc-20181231.xsd#RetirementBenefitsDetails1" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/RetirementBenefitsDetails2" xlink:href="noc-20181231.xsd#RetirementBenefitsDetails2" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/RetirementBenefitsDetails3" xlink:href="noc-20181231.xsd#RetirementBenefitsDetails3" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/RetirementBenefitsDetails4" xlink:href="noc-20181231.xsd#RetirementBenefitsDetails4" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/RetirementBenefitsDetails5" xlink:href="noc-20181231.xsd#RetirementBenefitsDetails5" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/RetirementBenefitsDetails6" xlink:href="noc-20181231.xsd#RetirementBenefitsDetails6" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/RetirementBenefitsDetails7" xlink:href="noc-20181231.xsd#RetirementBenefitsDetails7" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/RetirementBenefitsDetails8" xlink:href="noc-20181231.xsd#RetirementBenefitsDetails8" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/RetirementBenefitsDetails9" xlink:href="noc-20181231.xsd#RetirementBenefitsDetails9" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/RetirementBenefitsTables" xlink:href="noc-20181231.xsd#RetirementBenefitsTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/SegmentInformation" xlink:href="noc-20181231.xsd#SegmentInformation" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/SegmentInformationDetails1" xlink:href="noc-20181231.xsd#SegmentInformationDetails1" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/SegmentInformationDetails2" xlink:href="noc-20181231.xsd#SegmentInformationDetails2" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/SegmentInformationDetails3" xlink:href="noc-20181231.xsd#SegmentInformationDetails3" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/SegmentInformationDetails4" xlink:href="noc-20181231.xsd#SegmentInformationDetails4" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/SegmentInformationDetails5" xlink:href="noc-20181231.xsd#SegmentInformationDetails5" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/SegmentInformationDetails6" xlink:href="noc-20181231.xsd#SegmentInformationDetails6" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/SegmentInformationDetails7" xlink:href="noc-20181231.xsd#SegmentInformationDetails7" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/SegmentInformationTables" xlink:href="noc-20181231.xsd#SegmentInformationTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/StockCompensationPlansAndOtherCompensationArrangements" xlink:href="noc-20181231.xsd#StockCompensationPlansAndOtherCompensationArrangements" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/StockCompensationPlansAndOtherCompensationArrangementsDetails1" xlink:href="noc-20181231.xsd#StockCompensationPlansAndOtherCompensationArrangementsDetails1" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/StockCompensationPlansAndOtherCompensationArrangementsDetails2" xlink:href="noc-20181231.xsd#StockCompensationPlansAndOtherCompensationArrangementsDetails2" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/StockCompensationPlansAndOtherCompensationArrangementsDetails3" xlink:href="noc-20181231.xsd#StockCompensationPlansAndOtherCompensationArrangementsDetails3" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/StockCompensationPlansAndOtherCompensationArrangementsTables" xlink:href="noc-20181231.xsd#StockCompensationPlansAndOtherCompensationArrangementsTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/SummaryOfSignificantAccountingPolicies" xlink:href="noc-20181231.xsd#SummaryOfSignificantAccountingPolicies" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/SummaryOfSignificantAccountingPoliciesDetails1" xlink:href="noc-20181231.xsd#SummaryOfSignificantAccountingPoliciesDetails1" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/SummaryOfSignificantAccountingPoliciesDetails2" xlink:href="noc-20181231.xsd#SummaryOfSignificantAccountingPoliciesDetails2" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/SummaryOfSignificantAccountingPoliciesDetails3" xlink:href="noc-20181231.xsd#SummaryOfSignificantAccountingPoliciesDetails3" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/SummaryOfSignificantAccountingPoliciesDetails4" xlink:href="noc-20181231.xsd#SummaryOfSignificantAccountingPoliciesDetails4" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/SummaryOfSignificantAccountingPoliciesPolicies" xlink:href="noc-20181231.xsd#SummaryOfSignificantAccountingPoliciesPolicies" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/SummaryOfSignificantAccountingPoliciesSummaryOfSignificantAccountingPoliciesDetails5" xlink:href="noc-20181231.xsd#SummaryOfSignificantAccountingPoliciesSummaryOfSignificantAccountingPoliciesDetails5" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/SummaryOfSignificantAccountingPoliciesSummaryOfSignificantAccountingPoliciesDetails6" xlink:href="noc-20181231.xsd#SummaryOfSignificantAccountingPoliciesSummaryOfSignificantAccountingPoliciesDetails6" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/SummaryOfSignificantAccountingPoliciesTables" xlink:href="noc-20181231.xsd#SummaryOfSignificantAccountingPoliciesTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/UnauditedSelectedQuarterlyData" xlink:href="noc-20181231.xsd#UnauditedSelectedQuarterlyData" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/UnauditedSelectedQuarterlyDataDetails" xlink:href="noc-20181231.xsd#UnauditedSelectedQuarterlyDataDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/UnauditedSelectedQuarterlyDataTables" xlink:href="noc-20181231.xsd#UnauditedSelectedQuarterlyDataTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/UnbilledReceivablesNet" xlink:href="noc-20181231.xsd#UnbilledReceivablesNet" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/UnbilledReceivablesNetDetails" xlink:href="noc-20181231.xsd#UnbilledReceivablesNetDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.northropgrumman.com/role/UnbilledReceivablesNetTables" xlink:href="noc-20181231.xsd#UnbilledReceivablesNetTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedLabel" xlink:type="simple" />
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedNetLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedNetLabel" xlink:type="simple" />
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedPeriodEndLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedPeriodEndLabel" xlink:type="simple" />
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedPeriodStartLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedPeriodStartLabel" xlink:type="simple" />
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedTerseLabel" xlink:type="simple" />
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedTotalLabel" xlink:type="simple" />
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/netLabel" xlink:href="http://www.xbrl.org/lrr/role/net-2009-12-16.xsd#netLabel" xlink:type="simple" />
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/A2018ImpactOfAccountingMethodChange" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountingChangesAndErrorCorrectionsAbstract" xlink:label="loc_us-gaap_AccountingChangesAndErrorCorrectionsAbstract_2308A6B9D5FE41D14DA597CB948BADEB" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountingChangesTextBlock" xlink:label="loc_us-gaap_AccountingChangesTextBlock_9FCBF47422FF2483568C97CB94AA95BE" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingChangesAndErrorCorrectionsAbstract_2308A6B9D5FE41D14DA597CB948BADEB" xlink:to="loc_us-gaap_AccountingChangesTextBlock_9FCBF47422FF2483568C97CB94AA95BE" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/A2018ImpactOfAccountingMethodChangeDetails1" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountingChangesAndErrorCorrectionsAbstract" xlink:label="loc_us-gaap_AccountingChangesAndErrorCorrectionsAbstract_FF479B3FF53A0F324AAA9D1CA4567A81" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_9F0675F09884BC31B0B79D1CA45641CC" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingChangesAndErrorCorrectionsAbstract_FF479B3FF53A0F324AAA9D1CA4567A81" xlink:to="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_9F0675F09884BC31B0B79D1CA45641CC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_952BE7110D5431687B2E9D1CA4561043" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_9F0675F09884BC31B0B79D1CA45641CC" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_952BE7110D5431687B2E9D1CA4561043" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaap_EquityComponentDomain_5CF7E403BD8CF07B268F9D1CA4607AC8" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_952BE7110D5431687B2E9D1CA4561043" xlink:to="loc_us-gaap_EquityComponentDomain_5CF7E403BD8CF07B268F9D1CA4607AC8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetainedEarningsMember" xlink:label="loc_us-gaap_RetainedEarningsMember_80148E96A392888F52119D1CA4606B77" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquityComponentDomain_5CF7E403BD8CF07B268F9D1CA4607AC8" xlink:to="loc_us-gaap_RetainedEarningsMember_80148E96A392888F52119D1CA4606B77" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_ChangeinAccountingPrinciplePreviousMethodAxis" xlink:label="loc_noc_ChangeinAccountingPrinciplePreviousMethodAxis_7D9B7F0A1F30364431BD9D1CA460F293" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_9F0675F09884BC31B0B79D1CA45641CC" xlink:to="loc_noc_ChangeinAccountingPrinciplePreviousMethodAxis_7D9B7F0A1F30364431BD9D1CA460F293" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_ChangeinAccountingPrinciplePreviousMethodDomain" xlink:label="loc_noc_ChangeinAccountingPrinciplePreviousMethodDomain_7450AFD3362C1E304B089D1CA4605F36" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_noc_ChangeinAccountingPrinciplePreviousMethodAxis_7D9B7F0A1F30364431BD9D1CA460F293" xlink:to="loc_noc_ChangeinAccountingPrinciplePreviousMethodDomain_7450AFD3362C1E304B089D1CA4605F36" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_MethodPriortochangetoDefinedBenefitPlanActuarialGainLossImmediateRecognitionasComponentinNetPeriodBenefitCostMemberMember" xlink:label="loc_noc_MethodPriortochangetoDefinedBenefitPlanActuarialGainLossImmediateRecognitionasComponentinNetPeriodBenefitCostMemberMember_69A9825EFEC420920AD49D1CA4606162" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_noc_ChangeinAccountingPrinciplePreviousMethodDomain_7450AFD3362C1E304B089D1CA4605F36" xlink:to="loc_noc_MethodPriortochangetoDefinedBenefitPlanActuarialGainLossImmediateRecognitionasComponentinNetPeriodBenefitCostMemberMember_69A9825EFEC420920AD49D1CA4606162" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:label="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_43FDA4AAB58195D452109D1CA4605C1B" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_9F0675F09884BC31B0B79D1CA45641CC" xlink:to="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_43FDA4AAB58195D452109D1CA4605C1B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TypeOfAdoptionMember" xlink:label="loc_us-gaap_TypeOfAdoptionMember_30EA4C04C4A3E1EAFB7E9D1CA460E380" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_43FDA4AAB58195D452109D1CA4605C1B" xlink:to="loc_us-gaap_TypeOfAdoptionMember_30EA4C04C4A3E1EAFB7E9D1CA460E380" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis" xlink:label="loc_us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_507EAB1482795C0345929D1CA4601843" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_9F0675F09884BC31B0B79D1CA45641CC" xlink:to="loc_us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_507EAB1482795C0345929D1CA4601843" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ChangeInAccountingPrincipleMember" xlink:label="loc_us-gaap_ChangeInAccountingPrincipleMember_C3633FCDFFB8DA1F51F69D1CA460D238" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_507EAB1482795C0345929D1CA4601843" xlink:to="loc_us-gaap_ChangeInAccountingPrincipleMember_C3633FCDFFB8DA1F51F69D1CA460D238" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_AdjustmentsforchangetoDefinedBenefitPlanActuarialGainLossImmediateRecognitionasComponentinNetPeriodBenefitCostMember" xlink:label="loc_noc_AdjustmentsforchangetoDefinedBenefitPlanActuarialGainLossImmediateRecognitionasComponentinNetPeriodBenefitCostMember_5E0FCD80112CCA3C37109D1CA4605A4C" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ChangeInAccountingPrincipleMember_C3633FCDFFB8DA1F51F69D1CA460D238" xlink:to="loc_noc_AdjustmentsforchangetoDefinedBenefitPlanActuarialGainLossImmediateRecognitionasComponentinNetPeriodBenefitCostMember_5E0FCD80112CCA3C37109D1CA4605A4C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RestatementAxis" xlink:label="loc_srt_RestatementAxis_B359F06EAFC2E17796E29D1CA4607E74" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_9F0675F09884BC31B0B79D1CA45641CC" xlink:to="loc_srt_RestatementAxis_B359F06EAFC2E17796E29D1CA4607E74" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RestatementDomain" xlink:label="loc_srt_RestatementDomain_22589942EAED5DCD70379D1CA4605909" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RestatementAxis_B359F06EAFC2E17796E29D1CA4607E74" xlink:to="loc_srt_RestatementDomain_22589942EAED5DCD70379D1CA4605909" xlink:type="arc" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RestatementDomain_22589942EAED5DCD70379D1CA4605909" xlink:to="loc_us-gaap_ChangeInAccountingPrincipleMember_C3633FCDFFB8DA1F51F69D1CA460D238" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_6FC253B6760295365FF29D1CA460B7E6" xlink:type="locator" />
    <link:presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_9F0675F09884BC31B0B79D1CA45641CC" xlink:to="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_6FC253B6760295365FF29D1CA460B7E6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GeneralAndAdministrativeExpense" xlink:label="loc_us-gaap_GeneralAndAdministrativeExpense_721B1F039DB94258C9BD9D1CA46A9548" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_6FC253B6760295365FF29D1CA460B7E6" xlink:to="loc_us-gaap_GeneralAndAdministrativeExpense_721B1F039DB94258C9BD9D1CA46A9548" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:label="loc_us-gaap_OperatingIncomeLoss_C2BCD50C00AA626DFDCF9D1CA46A1D9E" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_6FC253B6760295365FF29D1CA460B7E6" xlink:to="loc_us-gaap_OperatingIncomeLoss_C2BCD50C00AA626DFDCF9D1CA46A1D9E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InterestAndDebtExpense" xlink:label="loc_us-gaap_InterestAndDebtExpense_DB33A2507210C591AA6B9D1CA46A8D0C" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_6FC253B6760295365FF29D1CA460B7E6" xlink:to="loc_us-gaap_InterestAndDebtExpense_DB33A2507210C591AA6B9D1CA46A8D0C" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_NetFASnonservicePensionBenefitExpense" xlink:label="loc_noc_NetFASnonservicePensionBenefitExpense_9111C6ADB75E1BBB8E0D9D1CA46AA430" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_6FC253B6760295365FF29D1CA460B7E6" xlink:to="loc_noc_NetFASnonservicePensionBenefitExpense_9111C6ADB75E1BBB8E0D9D1CA46AA430" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanActuarialGainLossImmediateRecognitionAsComponentInNetPeriodicBenefitCostCredit" xlink:label="loc_us-gaap_DefinedBenefitPlanActuarialGainLossImmediateRecognitionAsComponentInNetPeriodicBenefitCostCredit_0E6EEF7E94DA196730919D1CA46A5C7A" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_6FC253B6760295365FF29D1CA460B7E6" xlink:to="loc_us-gaap_DefinedBenefitPlanActuarialGainLossImmediateRecognitionAsComponentInNetPeriodicBenefitCostCredit_0E6EEF7E94DA196730919D1CA46A5C7A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherNonoperatingIncomeExpense" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_9524DBE3CE3E0596601E9D1CA46A11A5" xlink:type="locator" />
    <link:presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_6FC253B6760295365FF29D1CA460B7E6" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_9524DBE3CE3E0596601E9D1CA46A11A5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_4AECF02DA89E4E16C6029D1CA46AAD6E" xlink:type="locator" />
    <link:presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_6FC253B6760295365FF29D1CA460B7E6" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_4AECF02DA89E4E16C6029D1CA46AAD6E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_D4414E349693CD10C8AC9D1CA46A54C3" xlink:type="locator" />
    <link:presentationArc order="8" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_6FC253B6760295365FF29D1CA460B7E6" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_D4414E349693CD10C8AC9D1CA46A54C3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_38CA0EF36FEF41D7ECAD9D1CA46A2AF5" xlink:type="locator" />
    <link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_6FC253B6760295365FF29D1CA460B7E6" xlink:to="loc_us-gaap_NetIncomeLoss_38CA0EF36FEF41D7ECAD9D1CA46A2AF5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EarningsPerShareBasic" xlink:label="loc_us-gaap_EarningsPerShareBasic_3FE46CE0E8FD4B388EA49D1CA46AFABF" xlink:type="locator" />
    <link:presentationArc order="10" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_6FC253B6760295365FF29D1CA460B7E6" xlink:to="loc_us-gaap_EarningsPerShareBasic_3FE46CE0E8FD4B388EA49D1CA46AFABF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EarningsPerShareDiluted" xlink:label="loc_us-gaap_EarningsPerShareDiluted_25B615A974DBD6DF1FF29D1CA46A938C" xlink:type="locator" />
    <link:presentationArc order="11" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_6FC253B6760295365FF29D1CA460B7E6" xlink:to="loc_us-gaap_EarningsPerShareDiluted_25B615A974DBD6DF1FF29D1CA46A938C" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/A2018ImpactOfAccountingMethodChangeDetails2" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountingChangesAndErrorCorrectionsAbstract" xlink:label="loc_us-gaap_AccountingChangesAndErrorCorrectionsAbstract_B1D33F9FB928F3AE650099F51C6D25D5" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_D26B8655CD435769AB7599F51C6DFEE0" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingChangesAndErrorCorrectionsAbstract_B1D33F9FB928F3AE650099F51C6D25D5" xlink:to="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_D26B8655CD435769AB7599F51C6DFEE0" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_ChangeinAccountingPrinciplePreviousMethodAxis" xlink:label="loc_noc_ChangeinAccountingPrinciplePreviousMethodAxis_40BCBA412D2A8864557499F51C6DB93F" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_D26B8655CD435769AB7599F51C6DFEE0" xlink:to="loc_noc_ChangeinAccountingPrinciplePreviousMethodAxis_40BCBA412D2A8864557499F51C6DB93F" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_ChangeinAccountingPrinciplePreviousMethodDomain" xlink:label="loc_noc_ChangeinAccountingPrinciplePreviousMethodDomain_A3E9445E7BB01562FA4299F51C6DD2AE" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_noc_ChangeinAccountingPrinciplePreviousMethodAxis_40BCBA412D2A8864557499F51C6DB93F" xlink:to="loc_noc_ChangeinAccountingPrinciplePreviousMethodDomain_A3E9445E7BB01562FA4299F51C6DD2AE" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_MethodPriortochangetoDefinedBenefitPlanActuarialGainLossImmediateRecognitionasComponentinNetPeriodBenefitCostMemberMember" xlink:label="loc_noc_MethodPriortochangetoDefinedBenefitPlanActuarialGainLossImmediateRecognitionasComponentinNetPeriodBenefitCostMemberMember_12508C04AF89EEF1A12299F51C6D3205" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_noc_ChangeinAccountingPrinciplePreviousMethodDomain_A3E9445E7BB01562FA4299F51C6DD2AE" xlink:to="loc_noc_MethodPriortochangetoDefinedBenefitPlanActuarialGainLossImmediateRecognitionasComponentinNetPeriodBenefitCostMemberMember_12508C04AF89EEF1A12299F51C6D3205" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:label="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_69AACFEFF5526084179B99F51C6D3455" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_D26B8655CD435769AB7599F51C6DFEE0" xlink:to="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_69AACFEFF5526084179B99F51C6D3455" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TypeOfAdoptionMember" xlink:label="loc_us-gaap_TypeOfAdoptionMember_2F24A2050AD8DD9AA38B99F51C7D8FE4" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_69AACFEFF5526084179B99F51C6D3455" xlink:to="loc_us-gaap_TypeOfAdoptionMember_2F24A2050AD8DD9AA38B99F51C7D8FE4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis" xlink:label="loc_us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_DA761C4F2D6B51A127DE99F51C7DEC21" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_D26B8655CD435769AB7599F51C6DFEE0" xlink:to="loc_us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_DA761C4F2D6B51A127DE99F51C7DEC21" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ChangeInAccountingPrincipleMember" xlink:label="loc_us-gaap_ChangeInAccountingPrincipleMember_2170F8E78416DCF3BBC699F51C7D4066" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_DA761C4F2D6B51A127DE99F51C7DEC21" xlink:to="loc_us-gaap_ChangeInAccountingPrincipleMember_2170F8E78416DCF3BBC699F51C7D4066" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_AdjustmentsforchangetoDefinedBenefitPlanActuarialGainLossImmediateRecognitionasComponentinNetPeriodBenefitCostMember" xlink:label="loc_noc_AdjustmentsforchangetoDefinedBenefitPlanActuarialGainLossImmediateRecognitionasComponentinNetPeriodBenefitCostMember_A9A1DEFBC95FEDFE7EE999F51C7DF00E" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ChangeInAccountingPrincipleMember_2170F8E78416DCF3BBC699F51C7D4066" xlink:to="loc_noc_AdjustmentsforchangetoDefinedBenefitPlanActuarialGainLossImmediateRecognitionasComponentinNetPeriodBenefitCostMember_A9A1DEFBC95FEDFE7EE999F51C7DF00E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RestatementAxis" xlink:label="loc_srt_RestatementAxis_51A4F2FDD7C33165276799F51C7D635F" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_D26B8655CD435769AB7599F51C6DFEE0" xlink:to="loc_srt_RestatementAxis_51A4F2FDD7C33165276799F51C7D635F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RestatementDomain" xlink:label="loc_srt_RestatementDomain_19F6E24C37D7262E51DB99F51C7DD8D9" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RestatementAxis_51A4F2FDD7C33165276799F51C7D635F" xlink:to="loc_srt_RestatementDomain_19F6E24C37D7262E51DB99F51C7DD8D9" xlink:type="arc" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RestatementDomain_19F6E24C37D7262E51DB99F51C7DD8D9" xlink:to="loc_us-gaap_ChangeInAccountingPrincipleMember_2170F8E78416DCF3BBC699F51C7D4066" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_DC9F28134B6552ECB00D99F51C7DD39D" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_D26B8655CD435769AB7599F51C6DFEE0" xlink:to="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_DC9F28134B6552ECB00D99F51C7DD39D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_FF903C5011FE388D5DE499F51C7DEB4D" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_DC9F28134B6552ECB00D99F51C7DD39D" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_FF903C5011FE388D5DE499F51C7DEB4D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_DF84F1B347AC6A29CD1B99F51C7D1A62" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_DC9F28134B6552ECB00D99F51C7DD39D" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_DF84F1B347AC6A29CD1B99F51C7D1A62" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/A2018ImpactOfAccountingMethodChangeDetails3" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountingChangesAndErrorCorrectionsAbstract" xlink:label="loc_us-gaap_AccountingChangesAndErrorCorrectionsAbstract_416295856620E617A0F4A04759D02FC5" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_FF6ECCE345446CAB49AEA04759D0AECF" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingChangesAndErrorCorrectionsAbstract_416295856620E617A0F4A04759D02FC5" xlink:to="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_FF6ECCE345446CAB49AEA04759D0AECF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_ADF0E8DE2ADD4C72FB3DA04759D00A0E" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_FF6ECCE345446CAB49AEA04759D0AECF" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_ADF0E8DE2ADD4C72FB3DA04759D00A0E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaap_EquityComponentDomain_0FAC2C7D4A52D9EA6AB6A04759D0A002" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_ADF0E8DE2ADD4C72FB3DA04759D00A0E" xlink:to="loc_us-gaap_EquityComponentDomain_0FAC2C7D4A52D9EA6AB6A04759D0A002" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetainedEarningsMember" xlink:label="loc_us-gaap_RetainedEarningsMember_7242B2A7DA8C4DFB8383A04759D0B1FA" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquityComponentDomain_0FAC2C7D4A52D9EA6AB6A04759D0A002" xlink:to="loc_us-gaap_RetainedEarningsMember_7242B2A7DA8C4DFB8383A04759D0B1FA" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_ChangeinAccountingPrinciplePreviousMethodAxis" xlink:label="loc_noc_ChangeinAccountingPrinciplePreviousMethodAxis_E0C13A6DA0198BF7BD9BA04759D06C5F" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_FF6ECCE345446CAB49AEA04759D0AECF" xlink:to="loc_noc_ChangeinAccountingPrinciplePreviousMethodAxis_E0C13A6DA0198BF7BD9BA04759D06C5F" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_ChangeinAccountingPrinciplePreviousMethodDomain" xlink:label="loc_noc_ChangeinAccountingPrinciplePreviousMethodDomain_07CBDB4AFDDEA6A4C66EA04759D07733" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_noc_ChangeinAccountingPrinciplePreviousMethodAxis_E0C13A6DA0198BF7BD9BA04759D06C5F" xlink:to="loc_noc_ChangeinAccountingPrinciplePreviousMethodDomain_07CBDB4AFDDEA6A4C66EA04759D07733" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_MethodPriortochangetoDefinedBenefitPlanActuarialGainLossImmediateRecognitionasComponentinNetPeriodBenefitCostMemberMember" xlink:label="loc_noc_MethodPriortochangetoDefinedBenefitPlanActuarialGainLossImmediateRecognitionasComponentinNetPeriodBenefitCostMemberMember_602E5FE8ED88A60C4FFBA04759D0B0CB" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_noc_ChangeinAccountingPrinciplePreviousMethodDomain_07CBDB4AFDDEA6A4C66EA04759D07733" xlink:to="loc_noc_MethodPriortochangetoDefinedBenefitPlanActuarialGainLossImmediateRecognitionasComponentinNetPeriodBenefitCostMemberMember_602E5FE8ED88A60C4FFBA04759D0B0CB" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:label="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_74B2B2378EDB8D7674C9A04759D0F636" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_FF6ECCE345446CAB49AEA04759D0AECF" xlink:to="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_74B2B2378EDB8D7674C9A04759D0F636" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TypeOfAdoptionMember" xlink:label="loc_us-gaap_TypeOfAdoptionMember_C17B0590402A1024DA82A04759D0BB60" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_74B2B2378EDB8D7674C9A04759D0F636" xlink:to="loc_us-gaap_TypeOfAdoptionMember_C17B0590402A1024DA82A04759D0BB60" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis" xlink:label="loc_us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_CDB349F360BE0CD95897A04759D07092" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_FF6ECCE345446CAB49AEA04759D0AECF" xlink:to="loc_us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_CDB349F360BE0CD95897A04759D07092" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ChangeInAccountingPrincipleMember" xlink:label="loc_us-gaap_ChangeInAccountingPrincipleMember_9FA245FBD0654E1965F9A04759E0F05E" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_CDB349F360BE0CD95897A04759D07092" xlink:to="loc_us-gaap_ChangeInAccountingPrincipleMember_9FA245FBD0654E1965F9A04759E0F05E" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_AdjustmentsforchangetoDefinedBenefitPlanActuarialGainLossImmediateRecognitionasComponentinNetPeriodBenefitCostMember" xlink:label="loc_noc_AdjustmentsforchangetoDefinedBenefitPlanActuarialGainLossImmediateRecognitionasComponentinNetPeriodBenefitCostMember_CC44BE9532270FFAE029A04759E055CD" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ChangeInAccountingPrincipleMember_9FA245FBD0654E1965F9A04759E0F05E" xlink:to="loc_noc_AdjustmentsforchangetoDefinedBenefitPlanActuarialGainLossImmediateRecognitionasComponentinNetPeriodBenefitCostMember_CC44BE9532270FFAE029A04759E055CD" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RestatementAxis" xlink:label="loc_srt_RestatementAxis_B4D27A1C9E1770D98229A04759E08640" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_FF6ECCE345446CAB49AEA04759D0AECF" xlink:to="loc_srt_RestatementAxis_B4D27A1C9E1770D98229A04759E08640" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RestatementDomain" xlink:label="loc_srt_RestatementDomain_DBF057C89E9402356FCFA04759E00243" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RestatementAxis_B4D27A1C9E1770D98229A04759E08640" xlink:to="loc_srt_RestatementDomain_DBF057C89E9402356FCFA04759E00243" xlink:type="arc" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RestatementDomain_DBF057C89E9402356FCFA04759E00243" xlink:to="loc_us-gaap_ChangeInAccountingPrincipleMember_9FA245FBD0654E1965F9A04759E0F05E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_73F74B801ECD8E531568A04759E03609" xlink:type="locator" />
    <link:presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_FF6ECCE345446CAB49AEA04759D0AECF" xlink:to="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_73F74B801ECD8E531568A04759E03609" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_A09F5C5CF2398AB3E4BEA04759E0D348" xlink:type="locator" />
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_73F74B801ECD8E531568A04759E03609" xlink:to="loc_us-gaap_NetIncomeLoss_A09F5C5CF2398AB3E4BEA04759E0D348" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DepreciationDepletionAndAmortization" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_E80F7185B62E86E3A357A04759E0D1F1" xlink:type="locator" />
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_73F74B801ECD8E531568A04759E03609" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_E80F7185B62E86E3A357A04759E0D1F1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PensionAndOtherPostretirementBenefitsExpenseReversalOfExpenseNoncash" xlink:label="loc_us-gaap_PensionAndOtherPostretirementBenefitsExpenseReversalOfExpenseNoncash_4071994AB59E92735A6CA04759E0E696" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_73F74B801ECD8E531568A04759E03609" xlink:to="loc_us-gaap_PensionAndOtherPostretirementBenefitsExpenseReversalOfExpenseNoncash_4071994AB59E92735A6CA04759E0E696" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredIncomeTaxesAndTaxCredits" xlink:label="loc_us-gaap_DeferredIncomeTaxesAndTaxCredits_F9B277647463A49BAAC0A04759E05DAE" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_73F74B801ECD8E531568A04759E03609" xlink:to="loc_us-gaap_DeferredIncomeTaxesAndTaxCredits_F9B277647463A49BAAC0A04759E05DAE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensation" xlink:label="loc_us-gaap_ShareBasedCompensation_303A33F7858FDD4CBD10A04759E025FB" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_73F74B801ECD8E531568A04759E03609" xlink:to="loc_us-gaap_ShareBasedCompensation_303A33F7858FDD4CBD10A04759E025FB" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_6EBD460B0B6874C3A1E9A04759E0F2E3" xlink:type="locator" />
    <link:presentationArc order="6" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_73F74B801ECD8E531568A04759E03609" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_6EBD460B0B6874C3A1E9A04759E0F2E3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncreaseDecreaseInUnbilledReceivables" xlink:label="loc_us-gaap_IncreaseDecreaseInUnbilledReceivables_850F303192C2C6351496A04759E0B6F5" xlink:type="locator" />
    <link:presentationArc order="7" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_73F74B801ECD8E531568A04759E03609" xlink:to="loc_us-gaap_IncreaseDecreaseInUnbilledReceivables_850F303192C2C6351496A04759E0B6F5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncreaseDecreaseInInventories" xlink:label="loc_us-gaap_IncreaseDecreaseInInventories_6E51DC5014875D98F8B1A04759E0B930" xlink:type="locator" />
    <link:presentationArc order="8" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_73F74B801ECD8E531568A04759E03609" xlink:to="loc_us-gaap_IncreaseDecreaseInInventories_6E51DC5014875D98F8B1A04759E0B930" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" xlink:label="loc_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_555E837C5AAA5CC6C30FA04759E0FC17" xlink:type="locator" />
    <link:presentationArc order="9" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_73F74B801ECD8E531568A04759E03609" xlink:to="loc_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_555E837C5AAA5CC6C30FA04759E0FC17" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_0C8E7F58C4B7927A9B52A04759E0C90D" xlink:type="locator" />
    <link:presentationArc order="10" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_73F74B801ECD8E531568A04759E03609" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_0C8E7F58C4B7927A9B52A04759E0C90D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncreaseDecreaseInPensionAndPostretirementObligations" xlink:label="loc_us-gaap_IncreaseDecreaseInPensionAndPostretirementObligations_90103DBF7BC1DC9442EFA04759E013A0" xlink:type="locator" />
    <link:presentationArc order="11" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_73F74B801ECD8E531568A04759E03609" xlink:to="loc_us-gaap_IncreaseDecreaseInPensionAndPostretirementObligations_90103DBF7BC1DC9442EFA04759E013A0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherNoncashIncomeExpense" xlink:label="loc_us-gaap_OtherNoncashIncomeExpense_26B2182EFA89E08C415BA04759E01215" xlink:type="locator" />
    <link:presentationArc order="12" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_73F74B801ECD8E531568A04759E03609" xlink:to="loc_us-gaap_OtherNoncashIncomeExpense_26B2182EFA89E08C415BA04759E01215" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable" xlink:label="loc_us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable_BEF4E466BE31E083DA96A04759E0FCE8" xlink:type="locator" />
    <link:presentationArc order="13" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_73F74B801ECD8E531568A04759E03609" xlink:to="loc_us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable_BEF4E466BE31E083DA96A04759E0FCE8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_A04D246289CD4AD6B160A04759E07E31" xlink:type="locator" />
    <link:presentationArc order="14" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_73F74B801ECD8E531568A04759E03609" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_A04D246289CD4AD6B160A04759E07E31" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/A2018ImpactOfAccountingMethodChangeDetails4" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountingChangesAndErrorCorrectionsAbstract" xlink:label="loc_us-gaap_AccountingChangesAndErrorCorrectionsAbstract_F27CD20E920DE2C71D6A99F51424E66F" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_A6C866471FDBF9F441CC99F5142C3341" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingChangesAndErrorCorrectionsAbstract_F27CD20E920DE2C71D6A99F51424E66F" xlink:to="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_A6C866471FDBF9F441CC99F5142C3341" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_4922DBF740B17D5A678999F5142C4CDB" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_A6C866471FDBF9F441CC99F5142C3341" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_4922DBF740B17D5A678999F5142C4CDB" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaap_EquityComponentDomain_8E9447EF6C490119263A99F5142C814C" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_4922DBF740B17D5A678999F5142C4CDB" xlink:to="loc_us-gaap_EquityComponentDomain_8E9447EF6C490119263A99F5142C814C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetainedEarningsMember" xlink:label="loc_us-gaap_RetainedEarningsMember_466FACA20446CFAD631F99F5142CB05B" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquityComponentDomain_8E9447EF6C490119263A99F5142C814C" xlink:to="loc_us-gaap_RetainedEarningsMember_466FACA20446CFAD631F99F5142CB05B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_E4D7AE695CD926BD6CFC99F51430427A" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquityComponentDomain_8E9447EF6C490119263A99F5142C814C" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_E4D7AE695CD926BD6CFC99F51430427A" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_ChangeinAccountingPrinciplePreviousMethodAxis" xlink:label="loc_noc_ChangeinAccountingPrinciplePreviousMethodAxis_BABE9871A8452C472C3B99F514301C7F" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_A6C866471FDBF9F441CC99F5142C3341" xlink:to="loc_noc_ChangeinAccountingPrinciplePreviousMethodAxis_BABE9871A8452C472C3B99F514301C7F" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_ChangeinAccountingPrinciplePreviousMethodDomain" xlink:label="loc_noc_ChangeinAccountingPrinciplePreviousMethodDomain_2B24DB288175B6D3103399F514303DC5" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_noc_ChangeinAccountingPrinciplePreviousMethodAxis_BABE9871A8452C472C3B99F514301C7F" xlink:to="loc_noc_ChangeinAccountingPrinciplePreviousMethodDomain_2B24DB288175B6D3103399F514303DC5" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_MethodPriortochangetoDefinedBenefitPlanActuarialGainLossImmediateRecognitionasComponentinNetPeriodBenefitCostMemberMember" xlink:label="loc_noc_MethodPriortochangetoDefinedBenefitPlanActuarialGainLossImmediateRecognitionasComponentinNetPeriodBenefitCostMemberMember_E5C5255B35CB6A397C6D99F514343B8F" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_noc_ChangeinAccountingPrinciplePreviousMethodDomain_2B24DB288175B6D3103399F514303DC5" xlink:to="loc_noc_MethodPriortochangetoDefinedBenefitPlanActuarialGainLossImmediateRecognitionasComponentinNetPeriodBenefitCostMemberMember_E5C5255B35CB6A397C6D99F514343B8F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:label="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_B4E3FE85DCE43F92D00D99F5143455A7" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_A6C866471FDBF9F441CC99F5142C3341" xlink:to="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_B4E3FE85DCE43F92D00D99F5143455A7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TypeOfAdoptionMember" xlink:label="loc_us-gaap_TypeOfAdoptionMember_00761BF17B21C51DF93399F51434C297" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_B4E3FE85DCE43F92D00D99F5143455A7" xlink:to="loc_us-gaap_TypeOfAdoptionMember_00761BF17B21C51DF93399F51434C297" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis" xlink:label="loc_us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_3D51384C1EA7B885909699F514386E6F" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_A6C866471FDBF9F441CC99F5142C3341" xlink:to="loc_us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_3D51384C1EA7B885909699F514386E6F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ChangeInAccountingPrincipleMember" xlink:label="loc_us-gaap_ChangeInAccountingPrincipleMember_055BF67A35714DEEF7E299F514384AF5" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_3D51384C1EA7B885909699F514386E6F" xlink:to="loc_us-gaap_ChangeInAccountingPrincipleMember_055BF67A35714DEEF7E299F514384AF5" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_AdjustmentsforchangetoDefinedBenefitPlanActuarialGainLossImmediateRecognitionasComponentinNetPeriodBenefitCostMember" xlink:label="loc_noc_AdjustmentsforchangetoDefinedBenefitPlanActuarialGainLossImmediateRecognitionasComponentinNetPeriodBenefitCostMember_0CA5989D5687C676A3E499F514380BE6" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ChangeInAccountingPrincipleMember_055BF67A35714DEEF7E299F514384AF5" xlink:to="loc_noc_AdjustmentsforchangetoDefinedBenefitPlanActuarialGainLossImmediateRecognitionasComponentinNetPeriodBenefitCostMember_0CA5989D5687C676A3E499F514380BE6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RestatementAxis" xlink:label="loc_srt_RestatementAxis_23C45E5D9D6CF2B4B8EA99F514388418" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_A6C866471FDBF9F441CC99F5142C3341" xlink:to="loc_srt_RestatementAxis_23C45E5D9D6CF2B4B8EA99F514388418" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RestatementDomain" xlink:label="loc_srt_RestatementDomain_74AC1E74A9A058E3287999F51438B6F9" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RestatementAxis_23C45E5D9D6CF2B4B8EA99F514388418" xlink:to="loc_srt_RestatementDomain_74AC1E74A9A058E3287999F51438B6F9" xlink:type="arc" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RestatementDomain_74AC1E74A9A058E3287999F51438B6F9" xlink:to="loc_us-gaap_ChangeInAccountingPrincipleMember_055BF67A35714DEEF7E299F514384AF5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_44F55AF164518748101199F51438680F" xlink:type="locator" />
    <link:presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_A6C866471FDBF9F441CC99F5142C3341" xlink:to="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_44F55AF164518748101199F51438680F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockholdersEquity" xlink:label="loc_us-gaap_StockholdersEquity_1B4F82CA7C4BA152C6C799F51438DD60" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_44F55AF164518748101199F51438680F" xlink:to="loc_us-gaap_StockholdersEquity_1B4F82CA7C4BA152C6C799F51438DD60" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_ImpactfromadoptionofASU201802andASU201601" xlink:label="loc_noc_ImpactfromadoptionofASU201802andASU201601_626F755A9FFA62DF705899F51438ABEE" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_44F55AF164518748101199F51438680F" xlink:to="loc_noc_ImpactfromadoptionofASU201802andASU201601_626F755A9FFA62DF705899F51438ABEE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_A6FE926BA243CD4F761299F51438A48F" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_44F55AF164518748101199F51438680F" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_A6FE926BA243CD4F761299F51438A48F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockRepurchasedAndRetiredDuringPeriodValue" xlink:label="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodValue_086580E6283CB79A58EB99F51438D3DD" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_44F55AF164518748101199F51438680F" xlink:to="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodValue_086580E6283CB79A58EB99F51438D3DD" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_838128E3B1628A77D59A99F5143CB4F1" xlink:type="locator" />
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_44F55AF164518748101199F51438680F" xlink:to="loc_us-gaap_NetIncomeLoss_838128E3B1628A77D59A99F5143CB4F1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DividendsCommonStock" xlink:label="loc_us-gaap_DividendsCommonStock_A109F6606C0FE44691A799F5143C193E" xlink:type="locator" />
    <link:presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_44F55AF164518748101199F51438680F" xlink:to="loc_us-gaap_DividendsCommonStock_A109F6606C0FE44691A799F5143C193E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation_FA8A57E9B795DFC391DB99F5143CC49B" xlink:type="locator" />
    <link:presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_44F55AF164518748101199F51438680F" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation_FA8A57E9B795DFC391DB99F5143CC49B" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/A2018ImpactOfAccountingMethodChangesTables" xlink:type="extended">
    <link:loc xlink:href="noc-20181231.xsd#noc_ErrorCorrectionsandPriorPeriodAdjustmentsRestatementsAbstract" xlink:label="loc_noc_ErrorCorrectionsandPriorPeriodAdjustmentsRestatementsAbstract_A007EB9A72EBEF1799649BD9B2191802" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfErrorCorrectionsAndPriorPeriodAdjustmentRestatementTable" xlink:label="loc_us-gaap_ScheduleOfErrorCorrectionsAndPriorPeriodAdjustmentRestatementTable_3D7A56745CC2F175281F9BD9BD5BEB25" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_noc_ErrorCorrectionsandPriorPeriodAdjustmentsRestatementsAbstract_A007EB9A72EBEF1799649BD9B2191802" xlink:to="loc_us-gaap_ScheduleOfErrorCorrectionsAndPriorPeriodAdjustmentRestatementTable_3D7A56745CC2F175281F9BD9BD5BEB25" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementByRestatementPeriodAndAmountAxis" xlink:label="loc_us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementByRestatementPeriodAndAmountAxis_6E544D37CBA2D15A1BC89BD9BD5C74E7" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfErrorCorrectionsAndPriorPeriodAdjustmentRestatementTable_3D7A56745CC2F175281F9BD9BD5BEB25" xlink:to="loc_us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementByRestatementPeriodAndAmountAxis_6E544D37CBA2D15A1BC89BD9BD5C74E7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdjustmentsForErrorCorrectionDomain" xlink:label="loc_us-gaap_AdjustmentsForErrorCorrectionDomain_93E6CC14C407A64435819BD9BD5D5B10" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementByRestatementPeriodAndAmountAxis_6E544D37CBA2D15A1BC89BD9BD5C74E7" xlink:to="loc_us-gaap_AdjustmentsForErrorCorrectionDomain_93E6CC14C407A64435819BD9BD5D5B10" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RestatementAxis" xlink:label="loc_srt_RestatementAxis_94D48E569D999E9F2F039BD9BD5D1165" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfErrorCorrectionsAndPriorPeriodAdjustmentRestatementTable_3D7A56745CC2F175281F9BD9BD5BEB25" xlink:to="loc_srt_RestatementAxis_94D48E569D999E9F2F039BD9BD5D1165" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RestatementDomain" xlink:label="loc_srt_RestatementDomain_CF46099C49A6F3B3136F9BD9BD5ED122" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RestatementAxis_94D48E569D999E9F2F039BD9BD5D1165" xlink:to="loc_srt_RestatementDomain_CF46099C49A6F3B3136F9BD9BD5ED122" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementLineItems" xlink:label="loc_us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementLineItems_027DA7BAF858875BA3EC9BD9BD6100C3" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfErrorCorrectionsAndPriorPeriodAdjustmentRestatementTable_3D7A56745CC2F175281F9BD9BD5BEB25" xlink:to="loc_us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementLineItems_027DA7BAF858875BA3EC9BD9BD6100C3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfNewAccountingPronouncementsAndChangesInAccountingPrinciplesTextBlock" xlink:label="loc_us-gaap_ScheduleOfNewAccountingPronouncementsAndChangesInAccountingPrinciplesTextBlock_6F6416DF01309D4D9AF09BD9BD6D35AE" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementLineItems_027DA7BAF858875BA3EC9BD9BD6100C3" xlink:to="loc_us-gaap_ScheduleOfNewAccountingPronouncementsAndChangesInAccountingPrinciplesTextBlock_6F6416DF01309D4D9AF09BD9BD6D35AE" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/AccountsReceivableNet" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ReceivablesAbstract" xlink:label="loc_us-gaap_ReceivablesAbstract_5C00D82ECAA4D6848763977AA66075EB" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LoansNotesTradeAndOtherReceivablesDisclosureTextBlock" xlink:label="loc_us-gaap_LoansNotesTradeAndOtherReceivablesDisclosureTextBlock_606F5055A254FAF612CA977AA660CF04" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ReceivablesAbstract_5C00D82ECAA4D6848763977AA66075EB" xlink:to="loc_us-gaap_LoansNotesTradeAndOtherReceivablesDisclosureTextBlock_606F5055A254FAF612CA977AA660CF04" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/AccountsReceivableNetDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ReceivablesAbstract" xlink:label="loc_us-gaap_ReceivablesAbstract_0357F56B6157559B81149D69A827AC14" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable" xlink:label="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_84A8A9ACECA56AEF31589D69A82729BB" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ReceivablesAbstract_0357F56B6157559B81149D69A827AC14" xlink:to="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_84A8A9ACECA56AEF31589D69A82729BB" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountsNotesLoansAndFinancingReceivablesByLegalEntityOfCounterpartyTypeAxis" xlink:label="loc_us-gaap_AccountsNotesLoansAndFinancingReceivablesByLegalEntityOfCounterpartyTypeAxis_63B4105753D5B386E1CF9D69A8279020" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_84A8A9ACECA56AEF31589D69A82729BB" xlink:to="loc_us-gaap_AccountsNotesLoansAndFinancingReceivablesByLegalEntityOfCounterpartyTypeAxis_63B4105753D5B386E1CF9D69A8279020" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LegalEntityTypeOfCounterpartyDomain" xlink:label="loc_us-gaap_LegalEntityTypeOfCounterpartyDomain_ABB4D9839AE4FF99F3129D69A827AC0E" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountsNotesLoansAndFinancingReceivablesByLegalEntityOfCounterpartyTypeAxis_63B4105753D5B386E1CF9D69A8279020" xlink:to="loc_us-gaap_LegalEntityTypeOfCounterpartyDomain_ABB4D9839AE4FF99F3129D69A827AC0E" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_USGovernmentMember" xlink:label="loc_noc_USGovernmentMember_2899C5E454AEA6871A5C9D69A8276B49" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LegalEntityTypeOfCounterpartyDomain_ABB4D9839AE4FF99F3129D69A827AC0E" xlink:to="loc_noc_USGovernmentMember_2899C5E454AEA6871A5C9D69A8276B49" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_InternationalandOtherCustomersMember" xlink:label="loc_noc_InternationalandOtherCustomersMember_C259B69E9517F3DA84619D69A827D65A" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LegalEntityTypeOfCounterpartyDomain_ABB4D9839AE4FF99F3129D69A827AC0E" xlink:to="loc_noc_InternationalandOtherCustomersMember_C259B69E9517F3DA84619D69A827D65A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:label="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_0848FD0FCA4031A837279D69A82733AF" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_84A8A9ACECA56AEF31589D69A82729BB" xlink:to="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_0848FD0FCA4031A837279D69A82733AF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountsReceivableNetAbstract" xlink:label="loc_us-gaap_AccountsReceivableNetAbstract_6F1B9BCDE50E17F374249D69A827025A" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_0848FD0FCA4031A837279D69A82733AF" xlink:to="loc_us-gaap_AccountsReceivableNetAbstract_6F1B9BCDE50E17F374249D69A827025A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountsReceivableGrossCurrent" xlink:label="loc_us-gaap_AccountsReceivableGrossCurrent_FA342F6A4425AA38B7279D69A8278136" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountsReceivableNetAbstract_6F1B9BCDE50E17F374249D69A827025A" xlink:to="loc_us-gaap_AccountsReceivableGrossCurrent_FA342F6A4425AA38B7279D69A8278136" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent" xlink:label="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_3D4580382191746C40E29D69A827B778" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountsReceivableNetAbstract_6F1B9BCDE50E17F374249D69A827025A" xlink:to="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_3D4580382191746C40E29D69A827B778" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountsReceivableNetCurrent" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_FB1973F1EE3CCDD07DDE9D69A827F7C8" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountsReceivableNetAbstract_6F1B9BCDE50E17F374249D69A827025A" xlink:to="loc_us-gaap_AccountsReceivableNetCurrent_FB1973F1EE3CCDD07DDE9D69A827F7C8" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/AccountsReceivableNetTables" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ReceivablesAbstract" xlink:label="loc_us-gaap_ReceivablesAbstract_2CB0910F3C1A5DC88368977AA65DAE5B" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock" xlink:label="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock_84AF39FE482299378E3D977AA65DF117" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ReceivablesAbstract_2CB0910F3C1A5DC88368977AA65DAE5B" xlink:to="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock_84AF39FE482299378E3D977AA65DF117" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/AcquisitionOfOrbitalAtk" xlink:type="extended">
    <link:loc xlink:href="noc-20181231.xsd#noc_BusinessCombinationAbstract" xlink:label="loc_noc_BusinessCombinationAbstract_F38771D3211936B19EAF9793954DFCF6" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationDisclosureTextBlock" xlink:label="loc_us-gaap_BusinessCombinationDisclosureTextBlock_D021E0BF38E38ACD66339793954D721F" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_noc_BusinessCombinationAbstract_F38771D3211936B19EAF9793954DFCF6" xlink:to="loc_us-gaap_BusinessCombinationDisclosureTextBlock_D021E0BF38E38ACD66339793954D721F" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/AcquisitionOfOrbitalAtkAcquisitionOfOrbitalAtkDetails2" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationsAbstract" xlink:label="loc_us-gaap_BusinessCombinationsAbstract_2F7A64CBA1DF45B7C7CD97963401E281" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_36951B0BA22A4E5ED4E397A962B41F28" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessCombinationsAbstract_2F7A64CBA1DF45B7C7CD97963401E281" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_36951B0BA22A4E5ED4E397A962B41F28" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_43C81A0232567A4B553097A962B4D6D2" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_36951B0BA22A4E5ED4E397A962B41F28" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_43C81A0232567A4B553097A962B4D6D2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_DA2D82F9BE8CD1111D4C97A962BEAA29" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_43C81A0232567A4B553097A962B4D6D2" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_DA2D82F9BE8CD1111D4C97A962BEAA29" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_OrbitalATKMember" xlink:label="loc_noc_OrbitalATKMember_25E8DF63BC76313B72B997A964F83994" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_DA2D82F9BE8CD1111D4C97A962BEAA29" xlink:to="loc_noc_OrbitalATKMember_25E8DF63BC76313B72B997A964F83994" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessAcquisitionLineItems" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_03B2D2A7CB1D70A84ED297A962BED182" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_36951B0BA22A4E5ED4E397A962B41F28" xlink:to="loc_us-gaap_BusinessAcquisitionLineItems_03B2D2A7CB1D70A84ED297A962BED182" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Goodwill" xlink:label="loc_us-gaap_Goodwill_877B817DA306AF63008C97A963D653C7" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_03B2D2A7CB1D70A84ED297A962BED182" xlink:to="loc_us-gaap_Goodwill_877B817DA306AF63008C97A963D653C7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentIntangibles" xlink:label="loc_us-gaap_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentIntangibles_C79DBF0E3B1F53D3A4A29796340B5DDC" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessCombinationsAbstract_2F7A64CBA1DF45B7C7CD97963401E281" xlink:to="loc_us-gaap_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentIntangibles_C79DBF0E3B1F53D3A4A29796340B5DDC" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentOthercurrentliabilities" xlink:label="loc_noc_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentOthercurrentliabilities_6EC2033F10006D049D839796340B52A5" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessCombinationsAbstract_2F7A64CBA1DF45B7C7CD97963401E281" xlink:to="loc_noc_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentOthercurrentliabilities_6EC2033F10006D049D839796340B52A5" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentPensionandotherpostretirementbenefitplanliabilities" xlink:label="loc_noc_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentPensionandotherpostretirementbenefitplanliabilities_B5A4420028F9AA30A8999796340B2B5C" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessCombinationsAbstract_2F7A64CBA1DF45B7C7CD97963401E281" xlink:to="loc_noc_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentPensionandotherpostretirementbenefitplanliabilities_B5A4420028F9AA30A8999796340B2B5C" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentGoodwill" xlink:label="loc_noc_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentGoodwill_890BBC12C38965BC99329796340B5F24" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessCombinationsAbstract_2F7A64CBA1DF45B7C7CD97963401E281" xlink:to="loc_noc_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentGoodwill_890BBC12C38965BC99329796340B5F24" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/AcquisitionOfOrbitalAtkAcquisitionOfOrbitalAtkDetails3" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationsAbstract" xlink:label="loc_us-gaap_BusinessCombinationsAbstract_DCA16FD3E126630E1CE2A0475E8DCBC1" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_F517685B844A22833BA6A0475E8DF881" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessCombinationsAbstract_DCA16FD3E126630E1CE2A0475E8DCBC1" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_F517685B844A22833BA6A0475E8DF881" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_9DF1FC31D2D00117DE5CA0475E8D01AE" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_F517685B844A22833BA6A0475E8DF881" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_9DF1FC31D2D00117DE5CA0475E8D01AE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_49BCBFC05C779D4379F8A0475E8EE3FF" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_9DF1FC31D2D00117DE5CA0475E8D01AE" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_49BCBFC05C779D4379F8A0475E8EE3FF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CustomerRelationshipsMember" xlink:label="loc_us-gaap_CustomerRelationshipsMember_BE7B57C7B2399636E511A0475E8EB327" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_49BCBFC05C779D4379F8A0475E8EE3FF" xlink:to="loc_us-gaap_CustomerRelationshipsMember_BE7B57C7B2399636E511A0475E8EB327" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CustomerContractsMember" xlink:label="loc_us-gaap_CustomerContractsMember_56C73CEF95B1726493CFA0475E8E0184" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_49BCBFC05C779D4379F8A0475E8EE3FF" xlink:to="loc_us-gaap_CustomerContractsMember_56C73CEF95B1726493CFA0475E8E0184" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_62E2D41CC16C50D0BB66A0475E8EED36" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_F517685B844A22833BA6A0475E8DF881" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_62E2D41CC16C50D0BB66A0475E8EED36" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_6F173600862B0D2F379AA0475E8F575F" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_62E2D41CC16C50D0BB66A0475E8EED36" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_6F173600862B0D2F379AA0475E8F575F" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_OrbitalATKMember" xlink:label="loc_noc_OrbitalATKMember_2F170F25E87344D69823A0475E8FDEA2" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_6F173600862B0D2F379AA0475E8F575F" xlink:to="loc_noc_OrbitalATKMember_2F170F25E87344D69823A0475E8FDEA2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessAcquisitionLineItems" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_B9B3C1D13F543A03D33DA0475E8F5969" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_F517685B844A22833BA6A0475E8DF881" xlink:to="loc_us-gaap_BusinessAcquisitionLineItems_B9B3C1D13F543A03D33DA0475E8F5969" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SharesOutstanding" xlink:label="loc_us-gaap_SharesOutstanding_18E3C9D7F5C5EE1D1011A0475E8FEE94" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_B9B3C1D13F543A03D33DA0475E8F5969" xlink:to="loc_us-gaap_SharesOutstanding_18E3C9D7F5C5EE1D1011A0475E8FEE94" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessAcquisitionSharePrice" xlink:label="loc_us-gaap_BusinessAcquisitionSharePrice_7D40C856460B9AF3E207A0475E902F6A" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_B9B3C1D13F543A03D33DA0475E8F5969" xlink:to="loc_us-gaap_BusinessAcquisitionSharePrice_7D40C856460B9AF3E207A0475E902F6A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationConsiderationTransferred1" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferred1_53744C71D5C91D7FFC36A0475E90F51A" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_B9B3C1D13F543A03D33DA0475E8F5969" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferred1_53744C71D5C91D7FFC36A0475E90F51A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents_EF58994B1558FC967301A0475E90DFE7" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_B9B3C1D13F543A03D33DA0475E8F5969" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents_EF58994B1558FC967301A0475E90DFE7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables_D434476114729F973EB9A0475E90E471" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_B9B3C1D13F543A03D33DA0475E8F5969" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables_D434476114729F973EB9A0475E90E471" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedCurrentAssetsUnbilledReceivables" xlink:label="loc_noc_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedCurrentAssetsUnbilledReceivables_902F3990CB73768104AEA0475E901F58" xlink:type="locator" />
    <link:presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_B9B3C1D13F543A03D33DA0475E8F5969" xlink:to="loc_noc_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedCurrentAssetsUnbilledReceivables_902F3990CB73768104AEA0475E901F58" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory_53AC81B39139E9EBE937A0475E90863D" xlink:type="locator" />
    <link:presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_B9B3C1D13F543A03D33DA0475E8F5969" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory_53AC81B39139E9EBE937A0475E90863D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets_F072CF5880CF3DD53A06A0475E91D7EA" xlink:type="locator" />
    <link:presentationArc order="8" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_B9B3C1D13F543A03D33DA0475E8F5969" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets_F072CF5880CF3DD53A06A0475E91D7EA" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment_E37E1F2EFDF10256842EA0475E91160F" xlink:type="locator" />
    <link:presentationArc order="9" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_B9B3C1D13F543A03D33DA0475E8F5969" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment_E37E1F2EFDF10256842EA0475E91160F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Goodwill" xlink:label="loc_us-gaap_Goodwill_3B583ABA3096D0F8EC25A0475E91F4A5" xlink:type="locator" />
    <link:presentationArc order="10" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_B9B3C1D13F543A03D33DA0475E8F5969" xlink:to="loc_us-gaap_Goodwill_3B583ABA3096D0F8EC25A0475E91F4A5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill_C7EDA5663728B9A47C68A0475E912395" xlink:type="locator" />
    <link:presentationArc order="11" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_B9B3C1D13F543A03D33DA0475E8F5969" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill_C7EDA5663728B9A47C68A0475E912395" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets_D9B390B01E87A7EC517EA0475E91F5D2" xlink:type="locator" />
    <link:presentationArc order="12" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_B9B3C1D13F543A03D33DA0475E8F5969" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets_D9B390B01E87A7EC517EA0475E91F5D2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_F8F2C32FE812BA769284A0475E92EA4F" xlink:type="locator" />
    <link:presentationArc order="13" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_B9B3C1D13F543A03D33DA0475E8F5969" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_F8F2C32FE812BA769284A0475E92EA4F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable_613DE929BD5276801D0AA0475E927404" xlink:type="locator" />
    <link:presentationArc order="14" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_B9B3C1D13F543A03D33DA0475E8F5969" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable_613DE929BD5276801D0AA0475E927404" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedCurrentLiabilitiesEmployeerelatedliabilities" xlink:label="loc_noc_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedCurrentLiabilitiesEmployeerelatedliabilities_C5FD5E17A30AEB2A7E84A0475E92FD4F" xlink:type="locator" />
    <link:presentationArc order="15" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_B9B3C1D13F543A03D33DA0475E8F5969" xlink:to="loc_noc_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedCurrentLiabilitiesEmployeerelatedliabilities_C5FD5E17A30AEB2A7E84A0475E92FD4F" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedCurrentLiabilitiesCustomerAdvances" xlink:label="loc_noc_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedCurrentLiabilitiesCustomerAdvances_F9540C734F6E6040C7C2A0475E927321" xlink:type="locator" />
    <link:presentationArc order="16" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_B9B3C1D13F543A03D33DA0475E8F5969" xlink:to="loc_noc_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedCurrentLiabilitiesCustomerAdvances_F9540C734F6E6040C7C2A0475E927321" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedCurrentLiabilitiesBelowMarketContracts" xlink:label="loc_noc_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedCurrentLiabilitiesBelowMarketContracts_A8C9EA673EE769BB7850A0475E92ADFC" xlink:type="locator" />
    <link:presentationArc order="17" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_B9B3C1D13F543A03D33DA0475E8F5969" xlink:to="loc_noc_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedCurrentLiabilitiesBelowMarketContracts_A8C9EA673EE769BB7850A0475E92ADFC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesOther" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesOther_778190A2A57F1CE80501A0475E922EED" xlink:type="locator" />
    <link:presentationArc order="18" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_B9B3C1D13F543A03D33DA0475E8F5969" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesOther_778190A2A57F1CE80501A0475E922EED" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt_CC759DDE4E77D84A1AA1A0475E9382BF" xlink:type="locator" />
    <link:presentationArc order="19" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_B9B3C1D13F543A03D33DA0475E8F5969" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt_CC759DDE4E77D84A1AA1A0475E9382BF" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedNonCurrentLiabilitiesDefinedBenefitPlanLiability" xlink:label="loc_noc_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedNonCurrentLiabilitiesDefinedBenefitPlanLiability_C26AFB89C124052815DCA0475E93A341" xlink:type="locator" />
    <link:presentationArc order="20" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_B9B3C1D13F543A03D33DA0475E8F5969" xlink:to="loc_noc_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedNonCurrentLiabilitiesDefinedBenefitPlanLiability_C26AFB89C124052815DCA0475E93A341" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities_3671506EAA331ED50978A0475E930703" xlink:type="locator" />
    <link:presentationArc order="21" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_B9B3C1D13F543A03D33DA0475E8F5969" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities_3671506EAA331ED50978A0475E930703" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther_4B94D261450A18225191A0475E9375F7" xlink:type="locator" />
    <link:presentationArc order="22" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_B9B3C1D13F543A03D33DA0475E8F5969" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther_4B94D261450A18225191A0475E9375F7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities_8F685ABA517099D75A15A0475E93E9CD" xlink:type="locator" />
    <link:presentationArc order="23" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_B9B3C1D13F543A03D33DA0475E8F5969" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities_8F685ABA517099D75A15A0475E93E9CD" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_4242C4661B0DEEE453E7A0475E935C80" xlink:type="locator" />
    <link:presentationArc order="24" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_B9B3C1D13F543A03D33DA0475E8F5969" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_4242C4661B0DEEE453E7A0475E935C80" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife" xlink:label="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_F40983F6DBB2EC554A88A0475E9309E3" xlink:type="locator" />
    <link:presentationArc order="25" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_B9B3C1D13F543A03D33DA0475E8F5969" xlink:to="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_F40983F6DBB2EC554A88A0475E9309E3" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_BusinessCombinationBelowMarketContractsreductioninsalesfor2018" xlink:label="loc_noc_BusinessCombinationBelowMarketContractsreductioninsalesfor2018_2DB7A97FC1844BD3FE57A0475E94B673" xlink:type="locator" />
    <link:presentationArc order="26" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_B9B3C1D13F543A03D33DA0475E8F5969" xlink:to="loc_noc_BusinessCombinationBelowMarketContractsreductioninsalesfor2018_2DB7A97FC1844BD3FE57A0475E94B673" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_BusinessCombinationBelowMarketContractsreductioninsalesfor2019" xlink:label="loc_noc_BusinessCombinationBelowMarketContractsreductioninsalesfor2019_6F7A54E92EE970C1B37EA0475E94B33B" xlink:type="locator" />
    <link:presentationArc order="27" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_B9B3C1D13F543A03D33DA0475E8F5969" xlink:to="loc_noc_BusinessCombinationBelowMarketContractsreductioninsalesfor2019_6F7A54E92EE970C1B37EA0475E94B33B" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_BusinessCombinationBelowMarketContractsreductioninsalesfor2020" xlink:label="loc_noc_BusinessCombinationBelowMarketContractsreductioninsalesfor2020_46F496D3FBCC093A8615A0475E94BF5B" xlink:type="locator" />
    <link:presentationArc order="28" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_B9B3C1D13F543A03D33DA0475E8F5969" xlink:to="loc_noc_BusinessCombinationBelowMarketContractsreductioninsalesfor2020_46F496D3FBCC093A8615A0475E94BF5B" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/AcquisitionOfOrbitalAtkDetails1" xlink:type="extended">
    <link:loc xlink:href="noc-20181231.xsd#noc_BusinessCombinationAbstract" xlink:label="loc_noc_BusinessCombinationAbstract_CB6D994C8BBC32FEA37F979496878F75" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_CF5C63B9CE56433144659794969109EA" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_noc_BusinessCombinationAbstract_CB6D994C8BBC32FEA37F979496878F75" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_CF5C63B9CE56433144659794969109EA" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_CD9BD8E7C765877481B19794969127D8" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_CF5C63B9CE56433144659794969109EA" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_CD9BD8E7C765877481B19794969127D8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_D4247E842F7BA831CF439794969122A7" xlink:type="locator" />
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_CD9BD8E7C765877481B19794969127D8" xlink:to="loc_us-gaap_SegmentDomain_D4247E842F7BA831CF439794969122A7" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_InnovationSystemsMember" xlink:label="loc_noc_InnovationSystemsMember_3E821989B1C89A9B730A979496914145" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentDomain_D4247E842F7BA831CF439794969122A7" xlink:to="loc_noc_InnovationSystemsMember_3E821989B1C89A9B730A979496914145" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidationItemsAxis" xlink:label="loc_srt_ConsolidationItemsAxis_879C0FEC9242751F2D7A97949691B77D" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_CF5C63B9CE56433144659794969109EA" xlink:to="loc_srt_ConsolidationItemsAxis_879C0FEC9242751F2D7A97949691B77D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="loc_srt_ConsolidationItemsDomain_9290F25F44F60927BC5D97949691465E" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_ConsolidationItemsAxis_879C0FEC9242751F2D7A97949691B77D" xlink:to="loc_srt_ConsolidationItemsDomain_9290F25F44F60927BC5D97949691465E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingSegmentsMember" xlink:label="loc_us-gaap_OperatingSegmentsMember_1F57266776409678ABD597949691B1E6" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_ConsolidationItemsDomain_9290F25F44F60927BC5D97949691465E" xlink:to="loc_us-gaap_OperatingSegmentsMember_1F57266776409678ABD597949691B1E6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessAcquisitionLineItems" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_B39A7A47C603F4313A1F979496912AD3" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_CF5C63B9CE56433144659794969109EA" xlink:to="loc_us-gaap_BusinessAcquisitionLineItems_B39A7A47C603F4313A1F979496912AD3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Revenues" xlink:label="loc_us-gaap_Revenues_A6F8BDD4C0E42BD4CBC19794969103C1" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_B39A7A47C603F4313A1F979496912AD3" xlink:to="loc_us-gaap_Revenues_A6F8BDD4C0E42BD4CBC19794969103C1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:label="loc_us-gaap_OperatingIncomeLoss_0F1B6C8DED30DE23E68697949691A11B" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_B39A7A47C603F4313A1F979496912AD3" xlink:to="loc_us-gaap_OperatingIncomeLoss_0F1B6C8DED30DE23E68697949691A11B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_206522FB09294535659397949691D901" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_B39A7A47C603F4313A1F979496912AD3" xlink:to="loc_us-gaap_NetIncomeLoss_206522FB09294535659397949691D901" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationAcquisitionRelatedCosts" xlink:label="loc_us-gaap_BusinessCombinationAcquisitionRelatedCosts_A75A1F233F6A3D896BA497949691C572" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_noc_BusinessCombinationAbstract_CB6D994C8BBC32FEA37F979496878F75" xlink:to="loc_us-gaap_BusinessCombinationAcquisitionRelatedCosts_A75A1F233F6A3D896BA497949691C572" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/AcquisitionOfOrbitalAtkProFormaFinancialInformationDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationsAbstract" xlink:label="loc_us-gaap_BusinessCombinationsAbstract_546E88F57C5CE6179BA0A0A4E1261699" xlink:type="locator" />
    <link:loc xlink:href="noc-20181231.xsd#noc_ProFormaAdjustmentsOrbitalATKASC606Salesadjustment" xlink:label="loc_noc_ProFormaAdjustmentsOrbitalATKASC606Salesadjustment_BFE7E38D5925D3C33BF7A0A4E12615D5" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessCombinationsAbstract_546E88F57C5CE6179BA0A0A4E1261699" xlink:to="loc_noc_ProFormaAdjustmentsOrbitalATKASC606Salesadjustment_BFE7E38D5925D3C33BF7A0A4E12615D5" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_ProFormaAdjustmentsOrbitalATKASC606CostofSalesadjustment" xlink:label="loc_noc_ProFormaAdjustmentsOrbitalATKASC606CostofSalesadjustment_6739B76837C369998DF4A0A9A9D72075" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessCombinationsAbstract_546E88F57C5CE6179BA0A0A4E1261699" xlink:to="loc_noc_ProFormaAdjustmentsOrbitalATKASC606CostofSalesadjustment_6739B76837C369998DF4A0A9A9D72075" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessAcquisitionsProFormaRevenue" xlink:label="loc_us-gaap_BusinessAcquisitionsProFormaRevenue_D4E3A802402E196E3CFDA0A4E126BA33" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessCombinationsAbstract_546E88F57C5CE6179BA0A0A4E1261699" xlink:to="loc_us-gaap_BusinessAcquisitionsProFormaRevenue_D4E3A802402E196E3CFDA0A4E126BA33" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss" xlink:label="loc_us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss_3B85BA4366EFD05F90C6A0A4E126709A" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessCombinationsAbstract_546E88F57C5CE6179BA0A0A4E1261699" xlink:to="loc_us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss_3B85BA4366EFD05F90C6A0A4E126709A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessAcquisitionProFormaEarningsPerShareDiluted" xlink:label="loc_us-gaap_BusinessAcquisitionProFormaEarningsPerShareDiluted_C9A538E57490F3C73646A0A4E126FD60" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessCombinationsAbstract_546E88F57C5CE6179BA0A0A4E1261699" xlink:to="loc_us-gaap_BusinessAcquisitionProFormaEarningsPerShareDiluted_C9A538E57490F3C73646A0A4E126FD60" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_ProFormaAdjustmentsOrbitalATKintercompanysaleselimination" xlink:label="loc_noc_ProFormaAdjustmentsOrbitalATKintercompanysaleselimination_1981EA2940B832893412A0A4E126C24D" xlink:type="locator" />
    <link:presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessCombinationsAbstract_546E88F57C5CE6179BA0A0A4E1261699" xlink:to="loc_noc_ProFormaAdjustmentsOrbitalATKintercompanysaleselimination_1981EA2940B832893412A0A4E126C24D" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_ProFormaAdjustmentsEliminationofnonrecurringtransactioncosts" xlink:label="loc_noc_ProFormaAdjustmentsEliminationofnonrecurringtransactioncosts_CDCEACB794B240A7A18CA0A4E1262895" xlink:type="locator" />
    <link:presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessCombinationsAbstract_546E88F57C5CE6179BA0A0A4E1261699" xlink:to="loc_noc_ProFormaAdjustmentsEliminationofnonrecurringtransactioncosts_CDCEACB794B240A7A18CA0A4E1262895" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_ProFormaAdjustmentsAdditionaldepreciationexpensenetofremovalofhistoricaldepreciation" xlink:label="loc_noc_ProFormaAdjustmentsAdditionaldepreciationexpensenetofremovalofhistoricaldepreciation_C1C9CA36BE7475736270A0A4E1269DDD" xlink:type="locator" />
    <link:presentationArc order="8" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessCombinationsAbstract_546E88F57C5CE6179BA0A0A4E1261699" xlink:to="loc_noc_ProFormaAdjustmentsAdditionaldepreciationexpensenetofremovalofhistoricaldepreciation_C1C9CA36BE7475736270A0A4E1269DDD" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_ProFormaAdjustmentsAdditionalinterestexpenseduetodebtissuedtofinancemerger" xlink:label="loc_noc_ProFormaAdjustmentsAdditionalinterestexpenseduetodebtissuedtofinancemerger_944AF1BB141C07B36BA8A0A4E12679A0" xlink:type="locator" />
    <link:presentationArc order="9" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessCombinationsAbstract_546E88F57C5CE6179BA0A0A4E1261699" xlink:to="loc_noc_ProFormaAdjustmentsAdditionalinterestexpenseduetodebtissuedtofinancemerger_944AF1BB141C07B36BA8A0A4E12679A0" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_ProFormaAdjustmentsAdditionalamortizationexpensenetofremovalofhistoricalamortizationexpense" xlink:label="loc_noc_ProFormaAdjustmentsAdditionalamortizationexpensenetofremovalofhistoricalamortizationexpense_C5AC7BB481AAD6E18A23A0A4E126BE48" xlink:type="locator" />
    <link:presentationArc order="10" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessCombinationsAbstract_546E88F57C5CE6179BA0A0A4E1261699" xlink:to="loc_noc_ProFormaAdjustmentsAdditionalamortizationexpensenetofremovalofhistoricalamortizationexpense_C5AC7BB481AAD6E18A23A0A4E126BE48" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_ProFormaAdjustmentsEliminationofOrbitalATKshistoricalamortizationofnetactuariallossesandpriorservicecreditsandrevisedpensionandotherpostretirementcosts" xlink:label="loc_noc_ProFormaAdjustmentsEliminationofOrbitalATKshistoricalamortizationofnetactuariallossesandpriorservicecreditsandrevisedpensionandotherpostretirementcosts_921DD661E3CFB4EACF2DA0A4E12632A2" xlink:type="locator" />
    <link:presentationArc order="11" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessCombinationsAbstract_546E88F57C5CE6179BA0A0A4E1261699" xlink:to="loc_noc_ProFormaAdjustmentsEliminationofOrbitalATKshistoricalamortizationofnetactuariallossesandpriorservicecreditsandrevisedpensionandotherpostretirementcosts_921DD661E3CFB4EACF2DA0A4E12632A2" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_IncomeTaxEffectsofProFormaAdjustments" xlink:label="loc_noc_IncomeTaxEffectsofProFormaAdjustments_442C93F0B310DBB2F032A0A4E126CE7F" xlink:type="locator" />
    <link:presentationArc order="12" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessCombinationsAbstract_546E88F57C5CE6179BA0A0A4E1261699" xlink:to="loc_noc_IncomeTaxEffectsofProFormaAdjustments_442C93F0B310DBB2F032A0A4E126CE7F" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/AcquisitionOfOrbitalAtkProFormaFinancialInformationTables" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationsAbstract" xlink:label="loc_us-gaap_BusinessCombinationsAbstract_5BF453057EEFBAEA8D31977AA6B26CE3" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessAcquisitionProFormaInformationTextBlock" xlink:label="loc_us-gaap_BusinessAcquisitionProFormaInformationTextBlock_47B716F6C345743A0CB0977AA6B296B4" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessCombinationsAbstract_5BF453057EEFBAEA8D31977AA6B26CE3" xlink:to="loc_us-gaap_BusinessAcquisitionProFormaInformationTextBlock_47B716F6C345743A0CB0977AA6B296B4" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/AcquisitionOfOrbitalAtkPurchasePriceTables" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationsAbstract" xlink:label="loc_us-gaap_BusinessCombinationsAbstract_DA9AC4ED2A2BEA82FE999F88622DAF83" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_FA07411BE0BF601744849F88622DD318" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessCombinationsAbstract_DA9AC4ED2A2BEA82FE999F88622DAF83" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_FA07411BE0BF601744849F88622DD318" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_BE4F3FB5E03D3E7985579F88622D7849" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_FA07411BE0BF601744849F88622DD318" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_BE4F3FB5E03D3E7985579F88622D7849" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_8015C4B1CE6B78138D2F9F88623C096E" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_BE4F3FB5E03D3E7985579F88622D7849" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_8015C4B1CE6B78138D2F9F88623C096E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeStatementLocationAxis" xlink:label="loc_us-gaap_IncomeStatementLocationAxis_2505F91039544FA354069F88623CE190" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_FA07411BE0BF601744849F88622DD318" xlink:to="loc_us-gaap_IncomeStatementLocationAxis_2505F91039544FA354069F88623CE190" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeStatementLocationDomain" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_EBA3B904AB46A36ECBCD9F88623C5F22" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_2505F91039544FA354069F88623CE190" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_EBA3B904AB46A36ECBCD9F88623C5F22" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_OwnershipAxis" xlink:label="loc_srt_OwnershipAxis_8F14E06E5D9F1BC8458A9F88623CD709" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_FA07411BE0BF601744849F88622DD318" xlink:to="loc_srt_OwnershipAxis_8F14E06E5D9F1BC8458A9F88623CD709" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_OwnershipDomain" xlink:label="loc_srt_OwnershipDomain_CA4254B787876CA9EFE49F88623CF270" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_OwnershipAxis_8F14E06E5D9F1BC8458A9F88623CD709" xlink:to="loc_srt_OwnershipDomain_CA4254B787876CA9EFE49F88623CF270" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementClassOfStockAxis" xlink:label="loc_us-gaap_StatementClassOfStockAxis_27445CB4445F1F00338E9F88623C8628" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_FA07411BE0BF601744849F88622DD318" xlink:to="loc_us-gaap_StatementClassOfStockAxis_27445CB4445F1F00338E9F88623C8628" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="loc_us-gaap_ClassOfStockDomain_400498F709896D36236F9F88623CE320" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementClassOfStockAxis_27445CB4445F1F00338E9F88623C8628" xlink:to="loc_us-gaap_ClassOfStockDomain_400498F709896D36236F9F88623CE320" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessAcquisitionLineItems" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_58E5B7FC53C9293A25699F88623CCA65" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_FA07411BE0BF601744849F88622DD318" xlink:to="loc_us-gaap_BusinessAcquisitionLineItems_58E5B7FC53C9293A25699F88623CCA65" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTextBlock" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTextBlock_38C59FA490FA48AE3D059F88623C6E75" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_58E5B7FC53C9293A25699F88623CCA65" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTextBlock_38C59FA490FA48AE3D059F88623C6E75" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock_67140B0CA54EBA445BA49FAD3CBF6B7A" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessCombinationsAbstract_DA9AC4ED2A2BEA82FE999F88622DAF83" xlink:to="loc_us-gaap_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock_67140B0CA54EBA445BA49FAD3CBF6B7A" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/AcquisitionOfOrbitalAtkScheduleOfFiniteLivedIntangibleAssetsTables" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationsAbstract" xlink:label="loc_us-gaap_BusinessCombinationsAbstract_7B155EDD80170DD16D0A9F885CFDCC6C" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAcquiredAsPartOfBusinessCombinationTable" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAcquiredAsPartOfBusinessCombinationTable_388CE4AC7F4137D3AEA59F885CFD6690" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessCombinationsAbstract_7B155EDD80170DD16D0A9F885CFDCC6C" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAcquiredAsPartOfBusinessCombinationTable_388CE4AC7F4137D3AEA59F885CFD6690" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_BEA4C723E2C20F6540849F885CFD5F8C" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAcquiredAsPartOfBusinessCombinationTable_388CE4AC7F4137D3AEA59F885CFD6690" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_BEA4C723E2C20F6540849F885CFD5F8C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_29C240ED953C2DFFAC7D9F885CFD011B" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_BEA4C723E2C20F6540849F885CFD5F8C" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_29C240ED953C2DFFAC7D9F885CFD011B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_3FE1DE8DAF94B46C97889F885CFD3A49" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAcquiredAsPartOfBusinessCombinationTable_388CE4AC7F4137D3AEA59F885CFD6690" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_3FE1DE8DAF94B46C97889F885CFD3A49" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_881A9C82DBD5F7809EF29F885CFD2A90" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_3FE1DE8DAF94B46C97889F885CFD3A49" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_881A9C82DBD5F7809EF29F885CFD2A90" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems" xlink:label="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_3C85D118DDFFF496410F9F885CFD8036" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAcquiredAsPartOfBusinessCombinationTable_388CE4AC7F4137D3AEA59F885CFD6690" xlink:to="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_3C85D118DDFFF496410F9F885CFD8036" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsAcquiredAsPartOfBusinessCombinationTextBlock" xlink:label="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsAcquiredAsPartOfBusinessCombinationTextBlock_B560CBE5C050A2DD96D89F885CFDE749" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_3C85D118DDFFF496410F9F885CFD8036" xlink:to="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsAcquiredAsPartOfBusinessCombinationTextBlock_B560CBE5C050A2DD96D89F885CFDE749" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/CommitmentsAndContingencies" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:label="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_D62EF6CD63629DD03FCB977AA5521FF3" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommitmentsAndContingenciesDisclosureTextBlock" xlink:label="loc_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_6C74897C889E37F49989977AA552E1FD" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_D62EF6CD63629DD03FCB977AA5521FF3" xlink:to="loc_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_6C74897C889E37F49989977AA552E1FD" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/CommitmentsAndContingenciesDetails1" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:label="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_867AFEF061E515271BDB977AA5447B0B" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LossContingenciesTable" xlink:label="loc_us-gaap_LossContingenciesTable_DF0BB6C891356866558B977AA5444607" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_867AFEF061E515271BDB977AA5447B0B" xlink:to="loc_us-gaap_LossContingenciesTable_DF0BB6C891356866558B977AA5444607" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeAxis" xlink:label="loc_srt_RangeAxis_2BA63E1CEF94F383B67F977AA544AFDD" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LossContingenciesTable_DF0BB6C891356866558B977AA5444607" xlink:to="loc_srt_RangeAxis_2BA63E1CEF94F383B67F977AA544AFDD" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeMember" xlink:label="loc_srt_RangeMember_390A85A07C7D313D2D97977AA544E53C" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RangeAxis_2BA63E1CEF94F383B67F977AA544AFDD" xlink:to="loc_srt_RangeMember_390A85A07C7D313D2D97977AA544E53C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MaximumMember" xlink:label="loc_srt_MaximumMember_1C83260759B35B817BD4977AA545C5E1" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RangeMember_390A85A07C7D313D2D97977AA544E53C" xlink:to="loc_srt_MaximumMember_1C83260759B35B817BD4977AA545C5E1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MinimumMember" xlink:label="loc_srt_MinimumMember_D4F719EFD04A552D25C4977AA545C60B" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RangeMember_390A85A07C7D313D2D97977AA544E53C" xlink:to="loc_srt_MinimumMember_D4F719EFD04A552D25C4977AA545C60B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LossContingenciesByNatureOfContingencyAxis" xlink:label="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_E1F2D0AFEE6CE27DAB3A977AA545101A" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LossContingenciesTable_DF0BB6C891356866558B977AA5444607" xlink:to="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_E1F2D0AFEE6CE27DAB3A977AA545101A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LossContingencyNatureDomain" xlink:label="loc_us-gaap_LossContingencyNatureDomain_94FCDED79E4E5FE1FDAD977AA545190D" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_E1F2D0AFEE6CE27DAB3A977AA545101A" xlink:to="loc_us-gaap_LossContingencyNatureDomain_94FCDED79E4E5FE1FDAD977AA545190D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EnvironmentalIssueMember" xlink:label="loc_us-gaap_EnvironmentalIssueMember_943F8EB174BD04C8D80E977AA5468E76" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LossContingencyNatureDomain_94FCDED79E4E5FE1FDAD977AA545190D" xlink:to="loc_us-gaap_EnvironmentalIssueMember_943F8EB174BD04C8D80E977AA5468E76" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BalanceSheetLocationAxis" xlink:label="loc_us-gaap_BalanceSheetLocationAxis_A1F777F31892A1E117F9977AA546F31C" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LossContingenciesTable_DF0BB6C891356866558B977AA5444607" xlink:to="loc_us-gaap_BalanceSheetLocationAxis_A1F777F31892A1E117F9977AA546F31C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_CA2361650A301735CA08977AA5468713" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_A1F777F31892A1E117F9977AA546F31C" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_CA2361650A301735CA08977AA5468713" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherCurrentLiabilitiesMember" xlink:label="loc_us-gaap_OtherCurrentLiabilitiesMember_03543DE8F969681D7717977AA5474283" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_CA2361650A301735CA08977AA5468713" xlink:to="loc_us-gaap_OtherCurrentLiabilitiesMember_03543DE8F969681D7717977AA5474283" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherNoncurrentLiabilitiesMember" xlink:label="loc_us-gaap_OtherNoncurrentLiabilitiesMember_433D9A650E3AED4F42E4977AA54769E5" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_CA2361650A301735CA08977AA5468713" xlink:to="loc_us-gaap_OtherNoncurrentLiabilitiesMember_433D9A650E3AED4F42E4977AA54769E5" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_InventoryNetMember" xlink:label="loc_noc_InventoryNetMember_D4C5DF75DDCF2B17ECD2977AA5470737" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_CA2361650A301735CA08977AA5468713" xlink:to="loc_noc_InventoryNetMember_D4C5DF75DDCF2B17ECD2977AA5470737" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherNoncurrentAssetsMember" xlink:label="loc_us-gaap_OtherNoncurrentAssetsMember_5A40C5F762932241AC3B977AA547B27D" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_CA2361650A301735CA08977AA5468713" xlink:to="loc_us-gaap_OtherNoncurrentAssetsMember_5A40C5F762932241AC3B977AA547B27D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LossContingenciesLineItems" xlink:label="loc_us-gaap_LossContingenciesLineItems_86410B880CC041EA1083977AA5481593" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LossContingenciesTable_DF0BB6C891356866558B977AA5444607" xlink:to="loc_us-gaap_LossContingenciesLineItems_86410B880CC041EA1083977AA5481593" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LossContingencyAbstract" xlink:label="loc_us-gaap_LossContingencyAbstract_2F350672A74DFF4995CC977AA5485AEA" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LossContingenciesLineItems_86410B880CC041EA1083977AA5481593" xlink:to="loc_us-gaap_LossContingencyAbstract_2F350672A74DFF4995CC977AA5485AEA" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LossContingencyEstimateOfPossibleLoss" xlink:label="loc_us-gaap_LossContingencyEstimateOfPossibleLoss_539373C34075943390D4977AA548DDFB" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LossContingencyAbstract_2F350672A74DFF4995CC977AA5485AEA" xlink:to="loc_us-gaap_LossContingencyEstimateOfPossibleLoss_539373C34075943390D4977AA548DDFB" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccrualForEnvironmentalLossContingencies" xlink:label="loc_us-gaap_AccrualForEnvironmentalLossContingencies_BA4942581DFB8110CE7F977AA548FDBA" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LossContingencyAbstract_2F350672A74DFF4995CC977AA5485AEA" xlink:to="loc_us-gaap_AccrualForEnvironmentalLossContingencies_BA4942581DFB8110CE7F977AA548FDBA" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RecordedThirdPartyEnvironmentalRecoveriesAmount" xlink:label="loc_us-gaap_RecordedThirdPartyEnvironmentalRecoveriesAmount_35E6331AAD4C2D6D4224977AA5498550" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LossContingencyAbstract_2F350672A74DFF4995CC977AA5485AEA" xlink:to="loc_us-gaap_RecordedThirdPartyEnvironmentalRecoveriesAmount_35E6331AAD4C2D6D4224977AA5498550" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherIncreaseDecreaseInEnvironmentalLiabilities" xlink:label="loc_us-gaap_OtherIncreaseDecreaseInEnvironmentalLiabilities_5C3E47B5F4864B186FF4977AA549E55E" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LossContingencyAbstract_2F350672A74DFF4995CC977AA5485AEA" xlink:to="loc_us-gaap_OtherIncreaseDecreaseInEnvironmentalLiabilities_5C3E47B5F4864B186FF4977AA549E55E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherCommitmentsAbstract" xlink:label="loc_us-gaap_OtherCommitmentsAbstract_4A6073CF046FF815A671977AA5491192" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_867AFEF061E515271BDB977AA5447B0B" xlink:to="loc_us-gaap_OtherCommitmentsAbstract_4A6073CF046FF815A671977AA5491192" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_StandbyUnusedLettersOfCreditandbankguarantees" xlink:label="loc_noc_StandbyUnusedLettersOfCreditandbankguarantees_1227A920831204321589977AA5495CC4" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OtherCommitmentsAbstract_4A6073CF046FF815A671977AA5491192" xlink:to="loc_noc_StandbyUnusedLettersOfCreditandbankguarantees_1227A920831204321589977AA5495CC4" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_SuretyBondOutstanding" xlink:label="loc_noc_SuretyBondOutstanding_E756291E59D88D098863977AA549DFCE" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OtherCommitmentsAbstract_4A6073CF046FF815A671977AA5491192" xlink:to="loc_noc_SuretyBondOutstanding_E756291E59D88D098863977AA549DFCE" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/CommitmentsAndContingenciesDetails2" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:label="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_98DFD6A207432BE28CCD9BAB8F529F6A" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LeaseAndRentalExpense" xlink:label="loc_us-gaap_LeaseAndRentalExpense_078425AD52A2E4BEC4249BAB8F520CC1" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_98DFD6A207432BE28CCD9BAB8F529F6A" xlink:to="loc_us-gaap_LeaseAndRentalExpense_078425AD52A2E4BEC4249BAB8F520CC1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract_92211892B4D92DE4A97A9BAB8F52D485" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_98DFD6A207432BE28CCD9BAB8F529F6A" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract_92211892B4D92DE4A97A9BAB8F52D485" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent_2AB6B727B748D4EED8619BAB8F523115" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract_92211892B4D92DE4A97A9BAB8F52D485" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent_2AB6B727B748D4EED8619BAB8F523115" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears_92AFB78F2025C4FDD3159BAB8F52C5D2" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract_92211892B4D92DE4A97A9BAB8F52D485" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears_92AFB78F2025C4FDD3159BAB8F52C5D2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears_D1670A8453D2705D1A669BAB8F52F203" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract_92211892B4D92DE4A97A9BAB8F52D485" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears_D1670A8453D2705D1A669BAB8F52F203" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears_25497DA6CE5BC1908B959BAB8F520011" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract_92211892B4D92DE4A97A9BAB8F52D485" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears_25497DA6CE5BC1908B959BAB8F520011" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears_4363A6365B37FB0087B79BAB8F521027" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract_92211892B4D92DE4A97A9BAB8F52D485" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears_4363A6365B37FB0087B79BAB8F521027" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter_2C60EDAD0ED5D1DA49A09BAB8F527DB8" xlink:type="locator" />
    <link:presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract_92211892B4D92DE4A97A9BAB8F52D485" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter_2C60EDAD0ED5D1DA49A09BAB8F527DB8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDue" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDue_A7350D30CF9D43E1A9799BAB8F52E4E2" xlink:type="locator" />
    <link:presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract_92211892B4D92DE4A97A9BAB8F52D485" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDue_A7350D30CF9D43E1A9799BAB8F52E4E2" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/CommitmentsAndContingenciesTables" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:label="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_DCF6C6D9B4CC7E746B38977AA54DAACF" xlink:type="locator" />
    <link:loc xlink:href="noc-20181231.xsd#noc_EnvironmentalRemediationRangeofFutureCostsTable" xlink:label="loc_noc_EnvironmentalRemediationRangeofFutureCostsTable_3881B3B55E72F63AA5BC977AA54D0641" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_DCF6C6D9B4CC7E746B38977AA54DAACF" xlink:to="loc_noc_EnvironmentalRemediationRangeofFutureCostsTable_3881B3B55E72F63AA5BC977AA54D0641" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeAxis" xlink:label="loc_srt_RangeAxis_BF04461D8DA5F11770FA977AA54E6D92" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_noc_EnvironmentalRemediationRangeofFutureCostsTable_3881B3B55E72F63AA5BC977AA54D0641" xlink:to="loc_srt_RangeAxis_BF04461D8DA5F11770FA977AA54E6D92" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeMember" xlink:label="loc_srt_RangeMember_F10575320FEBC07BE143977AA54EFB6E" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RangeAxis_BF04461D8DA5F11770FA977AA54E6D92" xlink:to="loc_srt_RangeMember_F10575320FEBC07BE143977AA54EFB6E" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_EnvironmentalRemediationRangeofFutureCostsLineItems" xlink:label="loc_noc_EnvironmentalRemediationRangeofFutureCostsLineItems_B7650BACF785532ECCB8977AA54F07ED" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_noc_EnvironmentalRemediationRangeofFutureCostsTable_3881B3B55E72F63AA5BC977AA54D0641" xlink:to="loc_noc_EnvironmentalRemediationRangeofFutureCostsLineItems_B7650BACF785532ECCB8977AA54F07ED" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_EnvironmentalRemediationTableTextBlock" xlink:label="loc_noc_EnvironmentalRemediationTableTextBlock_EF528FA31359A5069968977AA54FAF53" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_noc_EnvironmentalRemediationRangeofFutureCostsLineItems_B7650BACF785532ECCB8977AA54F07ED" xlink:to="loc_noc_EnvironmentalRemediationTableTextBlock_EF528FA31359A5069968977AA54FAF53" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesTableTextBlock_BF7099082233DDCF268B977AA54F3D52" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_DCF6C6D9B4CC7E746B38977AA54DAACF" xlink:to="loc_us-gaap_ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesTableTextBlock_BF7099082233DDCF268B977AA54F3D52" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/ConsolidatedStatementsOfCashFlows" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementOfCashFlowsAbstract" xlink:label="loc_us-gaap_StatementOfCashFlowsAbstract_50B840EC6CC25FF869299FAC7110362B" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_C22333655C16A2722B9D9FAC7110B729" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfCashFlowsAbstract_50B840EC6CC25FF869299FAC7110362B" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_C22333655C16A2722B9D9FAC7110B729" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_A25C59F8EC00DF4073549FAC71102B21" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_C22333655C16A2722B9D9FAC7110B729" xlink:to="loc_us-gaap_NetIncomeLoss_A25C59F8EC00DF4073549FAC71102B21" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_610DD9A4D3BF9A73C1869FAC71107E69" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_C22333655C16A2722B9D9FAC7110B729" xlink:to="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_610DD9A4D3BF9A73C1869FAC71107E69" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DepreciationDepletionAndAmortization" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_68E4F90E36C5D5B4D1D69FAC71101C4B" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_610DD9A4D3BF9A73C1869FAC71107E69" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_68E4F90E36C5D5B4D1D69FAC71101C4B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PensionAndOtherPostretirementBenefitsExpenseReversalOfExpenseNoncash" xlink:label="loc_us-gaap_PensionAndOtherPostretirementBenefitsExpenseReversalOfExpenseNoncash_8F1CE82232AD1E555D969FAC711018CE" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_610DD9A4D3BF9A73C1869FAC71107E69" xlink:to="loc_us-gaap_PensionAndOtherPostretirementBenefitsExpenseReversalOfExpenseNoncash_8F1CE82232AD1E555D969FAC711018CE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensation" xlink:label="loc_us-gaap_ShareBasedCompensation_4C9D95E35FA69F3170519FAC71108000" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_610DD9A4D3BF9A73C1869FAC71107E69" xlink:to="loc_us-gaap_ShareBasedCompensation_4C9D95E35FA69F3170519FAC71108000" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredIncomeTaxesAndTaxCredits" xlink:label="loc_us-gaap_DeferredIncomeTaxesAndTaxCredits_A905756694116FA49FBB9FAC7110FC12" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_610DD9A4D3BF9A73C1869FAC71107E69" xlink:to="loc_us-gaap_DeferredIncomeTaxesAndTaxCredits_A905756694116FA49FBB9FAC7110FC12" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncreaseDecreaseInOperatingAssetsAbstract" xlink:label="loc_us-gaap_IncreaseDecreaseInOperatingAssetsAbstract_A033245F089BD4FC23D19FAC71101EF7" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_C22333655C16A2722B9D9FAC7110B729" xlink:to="loc_us-gaap_IncreaseDecreaseInOperatingAssetsAbstract_A033245F089BD4FC23D19FAC71101EF7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_F5A1C7FDFC0A593F48029FAC71108D92" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingAssetsAbstract_A033245F089BD4FC23D19FAC71101EF7" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_F5A1C7FDFC0A593F48029FAC71108D92" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncreaseDecreaseInUnbilledReceivables" xlink:label="loc_us-gaap_IncreaseDecreaseInUnbilledReceivables_7A5E4CF804D7D97FDBC49FAC711021C2" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingAssetsAbstract_A033245F089BD4FC23D19FAC71101EF7" xlink:to="loc_us-gaap_IncreaseDecreaseInUnbilledReceivables_7A5E4CF804D7D97FDBC49FAC711021C2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncreaseDecreaseInInventories" xlink:label="loc_us-gaap_IncreaseDecreaseInInventories_9D3232DD0B258ADCB6D09FAC71103D3C" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingAssetsAbstract_A033245F089BD4FC23D19FAC71101EF7" xlink:to="loc_us-gaap_IncreaseDecreaseInInventories_9D3232DD0B258ADCB6D09FAC71103D3C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" xlink:label="loc_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_BD233B10C18F2C95FC799FAC7110858A" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingAssetsAbstract_A033245F089BD4FC23D19FAC71101EF7" xlink:to="loc_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_BD233B10C18F2C95FC799FAC7110858A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_9414046F3336EC46E41E9FAC7110F579" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingAssetsAbstract_A033245F089BD4FC23D19FAC71101EF7" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_9414046F3336EC46E41E9FAC7110F579" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable" xlink:label="loc_us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable_7F787E724C92E22EB9DF9FAC711051F7" xlink:type="locator" />
    <link:presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingAssetsAbstract_A033245F089BD4FC23D19FAC71101EF7" xlink:to="loc_us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable_7F787E724C92E22EB9DF9FAC711051F7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncreaseDecreaseInPensionAndPostretirementObligations" xlink:label="loc_us-gaap_IncreaseDecreaseInPensionAndPostretirementObligations_23524120E5ECBE0EF3219FAC711051BF" xlink:type="locator" />
    <link:presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingAssetsAbstract_A033245F089BD4FC23D19FAC71101EF7" xlink:to="loc_us-gaap_IncreaseDecreaseInPensionAndPostretirementObligations_23524120E5ECBE0EF3219FAC711051BF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherNoncashIncomeExpense" xlink:label="loc_us-gaap_OtherNoncashIncomeExpense_A9DD17D1A7B33B8E13119FAC7110E530" xlink:type="locator" />
    <link:presentationArc order="8" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingAssetsAbstract_A033245F089BD4FC23D19FAC71101EF7" xlink:to="loc_us-gaap_OtherNoncashIncomeExpense_A9DD17D1A7B33B8E13119FAC7110E530" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_D6FBB58F86E1EE507AB69FAC71106FCB" xlink:type="locator" />
    <link:presentationArc order="9" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingAssetsAbstract_A033245F089BD4FC23D19FAC71101EF7" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_D6FBB58F86E1EE507AB69FAC71106FCB" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_3AE016C5101919356C609FAC7110D370" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfCashFlowsAbstract_50B840EC6CC25FF869299FAC7110362B" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_3AE016C5101919356C609FAC7110D370" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_601B864555DA5750F5519FAC7110D992" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_3AE016C5101919356C609FAC7110D370" xlink:to="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_601B864555DA5750F5519FAC7110D992" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:label="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_9E1C4CEC496887059ECE9FAC711005F5" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_3AE016C5101919356C609FAC7110D370" xlink:to="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_9E1C4CEC496887059ECE9FAC711005F5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PaymentsForProceedsFromOtherInvestingActivities" xlink:label="loc_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_7759EBD5703B5229D9839FAC7110A5F0" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_3AE016C5101919356C609FAC7110D370" xlink:to="loc_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_7759EBD5703B5229D9839FAC7110A5F0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_512D762E270EE962085A9FAC71104EDA" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_3AE016C5101919356C609FAC7110D370" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_512D762E270EE962085A9FAC71104EDA" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_66F15102A7C18522358C9FAC71104BEE" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfCashFlowsAbstract_50B840EC6CC25FF869299FAC7110362B" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_66F15102A7C18522358C9FAC71104BEE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RepaymentsOfLongTermDebt" xlink:label="loc_us-gaap_RepaymentsOfLongTermDebt_0740894682C37AFF430E9FAC711057D1" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_66F15102A7C18522358C9FAC71104BEE" xlink:to="loc_us-gaap_RepaymentsOfLongTermDebt_0740894682C37AFF430E9FAC711057D1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProceedsFromIssuanceOfLongTermDebt" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_E8F15096CCE27E82E87F9FAC711068B1" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_66F15102A7C18522358C9FAC71104BEE" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_E8F15096CCE27E82E87F9FAC711068B1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProceedsFromRepaymentsOfLinesOfCredit" xlink:label="loc_us-gaap_ProceedsFromRepaymentsOfLinesOfCredit_8E72A40F37B1AB3F7ACF9FAC71106945" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_66F15102A7C18522358C9FAC71104BEE" xlink:to="loc_us-gaap_ProceedsFromRepaymentsOfLinesOfCredit_8E72A40F37B1AB3F7ACF9FAC71106945" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProceedsFromRepaymentsOfCommercialPaper" xlink:label="loc_us-gaap_ProceedsFromRepaymentsOfCommercialPaper_B22BCB25E7618C34AC149FAC7110A093" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_66F15102A7C18522358C9FAC71104BEE" xlink:to="loc_us-gaap_ProceedsFromRepaymentsOfCommercialPaper_B22BCB25E7618C34AC149FAC7110A093" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PaymentsForRepurchaseOfCommonStock" xlink:label="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_1E6629957233D6607AB59FAC7110F172" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_66F15102A7C18522358C9FAC71104BEE" xlink:to="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_1E6629957233D6607AB59FAC7110F172" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PaymentsOfDividendsCommonStock" xlink:label="loc_us-gaap_PaymentsOfDividendsCommonStock_EEA6A4D042FA15A632289FAC7110F20A" xlink:type="locator" />
    <link:presentationArc order="6" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_66F15102A7C18522358C9FAC71104BEE" xlink:to="loc_us-gaap_PaymentsOfDividendsCommonStock_EEA6A4D042FA15A632289FAC7110F20A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation" xlink:label="loc_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_BF35E0A1C6B0B60B8A7C9FAC7110D506" xlink:type="locator" />
    <link:presentationArc order="7" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_66F15102A7C18522358C9FAC71104BEE" xlink:to="loc_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_BF35E0A1C6B0B60B8A7C9FAC7110D506" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProceedsFromPaymentsForOtherFinancingActivities" xlink:label="loc_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_06457C204D556DEDC0099FAC7110CE67" xlink:type="locator" />
    <link:presentationArc order="8" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_66F15102A7C18522358C9FAC71104BEE" xlink:to="loc_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_06457C204D556DEDC0099FAC7110CE67" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_A5C48A30AC0B8A222C9E9FAC7110BCD7" xlink:type="locator" />
    <link:presentationArc order="9" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_66F15102A7C18522358C9FAC71104BEE" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_A5C48A30AC0B8A222C9E9FAC7110BCD7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:label="loc_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_5F973BF2F43DA71C11B39FAC71105C0A" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfCashFlowsAbstract_50B840EC6CC25FF869299FAC7110362B" xlink:to="loc_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_5F973BF2F43DA71C11B39FAC71105C0A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_ADD540C70841785342029FAC71106546" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfCashFlowsAbstract_50B840EC6CC25FF869299FAC7110362B" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_ADD540C70841785342029FAC71106546" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_CC89A52F7AF8A9297C969FAC7110B28D" xlink:type="locator" />
    <link:presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfCashFlowsAbstract_50B840EC6CC25FF869299FAC7110362B" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_CC89A52F7AF8A9297C969FAC7110B28D" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/ConsolidatedStatementsOfChangesInShareholdersEquity" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementOfStockholdersEquityAbstract" xlink:label="loc_us-gaap_StatementOfStockholdersEquityAbstract_754BE8C15EF5326C66AF977AA708CF6E" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_B4A0C6C03941EE5525AE977AA708217F" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfStockholdersEquityAbstract_754BE8C15EF5326C66AF977AA708CF6E" xlink:to="loc_us-gaap_StatementTable_B4A0C6C03941EE5525AE977AA708217F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_A0D01EC08CDEF29E263B977AA7083F26" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementTable_B4A0C6C03941EE5525AE977AA708217F" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_A0D01EC08CDEF29E263B977AA7083F26" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaap_EquityComponentDomain_A9FE1B5CC97359C77EA9977AA7095B77" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_A0D01EC08CDEF29E263B977AA7083F26" xlink:to="loc_us-gaap_EquityComponentDomain_A9FE1B5CC97359C77EA9977AA7095B77" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommonStockMember" xlink:label="loc_us-gaap_CommonStockMember_EAE00BF5E3DE959EC467977AA7098673" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquityComponentDomain_A9FE1B5CC97359C77EA9977AA7095B77" xlink:to="loc_us-gaap_CommonStockMember_EAE00BF5E3DE959EC467977AA7098673" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdditionalPaidInCapitalMember" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_FEBEF939707247F4F063977AA7094B09" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquityComponentDomain_A9FE1B5CC97359C77EA9977AA7095B77" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_FEBEF939707247F4F063977AA7094B09" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetainedEarningsMember" xlink:label="loc_us-gaap_RetainedEarningsMember_AE6971E83FC907A157BD977AA709876A" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquityComponentDomain_A9FE1B5CC97359C77EA9977AA7095B77" xlink:to="loc_us-gaap_RetainedEarningsMember_AE6971E83FC907A157BD977AA709876A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_BEE73DC8AFA992578755977AA70A81F4" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquityComponentDomain_A9FE1B5CC97359C77EA9977AA7095B77" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_BEE73DC8AFA992578755977AA70A81F4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_BE6AEF079009F6902A97977AA70A4396" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementTable_B4A0C6C03941EE5525AE977AA708217F" xlink:to="loc_us-gaap_StatementLineItems_BE6AEF079009F6902A97977AA70A4396" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockholdersEquity" xlink:label="loc_us-gaap_StockholdersEquity_426598C21353BA367EC5977AA70A4A5E" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_BE6AEF079009F6902A97977AA70A4396" xlink:to="loc_us-gaap_StockholdersEquity_426598C21353BA367EC5977AA70A4A5E" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_ImpactfromadoptionofASU201802andASU201601" xlink:label="loc_noc_ImpactfromadoptionofASU201802andASU201601_85077579C028D6D3B7D9977AA70A5B0F" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_BE6AEF079009F6902A97977AA70A4396" xlink:to="loc_noc_ImpactfromadoptionofASU201802andASU201601_85077579C028D6D3B7D9977AA70A5B0F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockRepurchasedAndRetiredDuringPeriodValue" xlink:label="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodValue_2B99B0CC8352F1813F9E977AA70BBDB7" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_BE6AEF079009F6902A97977AA70A4396" xlink:to="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodValue_2B99B0CC8352F1813F9E977AA70BBDB7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation_C22F08D5242C5D33E2CB977AA70BB62F" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_BE6AEF079009F6902A97977AA70A4396" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation_C22F08D5242C5D33E2CB977AA70BB62F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_6D66254CDD884AF7D3F5977AA70B4F06" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_BE6AEF079009F6902A97977AA70A4396" xlink:to="loc_us-gaap_NetIncomeLoss_6D66254CDD884AF7D3F5977AA70B4F06" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DividendsCommonStock" xlink:label="loc_us-gaap_DividendsCommonStock_408C07AEA77471FB5788977AA70BDE62" xlink:type="locator" />
    <link:presentationArc order="6" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_BE6AEF079009F6902A97977AA70A4396" xlink:to="loc_us-gaap_DividendsCommonStock_408C07AEA77471FB5788977AA70BDE62" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_2681BEA6A7B1A9153D62977AA70B5396" xlink:type="locator" />
    <link:presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_BE6AEF079009F6902A97977AA70A4396" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_2681BEA6A7B1A9153D62977AA70B5396" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockholdersEquity" xlink:label="loc_us-gaap_StockholdersEquity_88DBCD78ACFA4AC4A3FF977AA70B811C" xlink:type="locator" />
    <link:presentationArc order="8" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_BE6AEF079009F6902A97977AA70A4396" xlink:to="loc_us-gaap_StockholdersEquity_88DBCD78ACFA4AC4A3FF977AA70B811C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommonStockDividendsPerShareDeclared" xlink:label="loc_us-gaap_CommonStockDividendsPerShareDeclared_263059EE9AFCD9D27C62977AA70CF6A6" xlink:type="locator" />
    <link:presentationArc order="9" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_BE6AEF079009F6902A97977AA70A4396" xlink:to="loc_us-gaap_CommonStockDividendsPerShareDeclared_263059EE9AFCD9D27C62977AA70CF6A6" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/ConsolidatedStatementsOfEarningsAndComprehensiveIncome" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeStatementAbstract" xlink:label="loc_us-gaap_IncomeStatementAbstract_198174BBDF066B5C9A5E9D623757C3E9" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_AC0D22A3B20EF834DB569D6237577607" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeStatementAbstract_198174BBDF066B5C9A5E9D623757C3E9" xlink:to="loc_us-gaap_StatementTable_AC0D22A3B20EF834DB569D6237577607" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ProductOrServiceAxis" xlink:label="loc_srt_ProductOrServiceAxis_8923939DB6565EE0D6DF9D6237579867" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementTable_AC0D22A3B20EF834DB569D6237577607" xlink:to="loc_srt_ProductOrServiceAxis_8923939DB6565EE0D6DF9D6237579867" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ProductsAndServicesDomain" xlink:label="loc_srt_ProductsAndServicesDomain_BC70F85B8B652D045E519D6237577C33" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_ProductOrServiceAxis_8923939DB6565EE0D6DF9D6237579867" xlink:to="loc_srt_ProductsAndServicesDomain_BC70F85B8B652D045E519D6237577C33" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProductMember" xlink:label="loc_us-gaap_ProductMember_75F7FE93135CE752D1699D6237571A73" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_ProductsAndServicesDomain_BC70F85B8B652D045E519D6237577C33" xlink:to="loc_us-gaap_ProductMember_75F7FE93135CE752D1699D6237571A73" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ServiceMember" xlink:label="loc_us-gaap_ServiceMember_D596E2B82BBA5FF53A3E9D623757B162" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_ProductsAndServicesDomain_BC70F85B8B652D045E519D6237577C33" xlink:to="loc_us-gaap_ServiceMember_D596E2B82BBA5FF53A3E9D623757B162" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_C1C7E297DFFA63FDF1559D623757813F" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementTable_AC0D22A3B20EF834DB569D6237577607" xlink:to="loc_us-gaap_StatementLineItems_C1C7E297DFFA63FDF1559D623757813F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CostOfGoodsAndServicesSold" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSold_1B7C72D7EEAAB73E43969D623757255A" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_C1C7E297DFFA63FDF1559D623757813F" xlink:to="loc_us-gaap_CostOfGoodsAndServicesSold_1B7C72D7EEAAB73E43969D623757255A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Revenues" xlink:label="loc_us-gaap_Revenues_A0EA81054FC73C623F619D6237573C18" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_C1C7E297DFFA63FDF1559D623757813F" xlink:to="loc_us-gaap_Revenues_A0EA81054FC73C623F619D6237573C18" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CostOfGoodsAndServicesSoldAbstract" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSoldAbstract_7FBBCD8C38C31F0AD3269D6237574DBC" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeStatementAbstract_198174BBDF066B5C9A5E9D623757C3E9" xlink:to="loc_us-gaap_CostOfGoodsAndServicesSoldAbstract_7FBBCD8C38C31F0AD3269D6237574DBC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GeneralAndAdministrativeExpense" xlink:label="loc_us-gaap_GeneralAndAdministrativeExpense_36A4337A273E535DC4529D623757BAC2" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CostOfGoodsAndServicesSoldAbstract_7FBBCD8C38C31F0AD3269D6237574DBC" xlink:to="loc_us-gaap_GeneralAndAdministrativeExpense_36A4337A273E535DC4529D623757BAC2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:label="loc_us-gaap_OperatingIncomeLoss_11B7A944A64956844E269D623757A54A" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeStatementAbstract_198174BBDF066B5C9A5E9D623757C3E9" xlink:to="loc_us-gaap_OperatingIncomeLoss_11B7A944A64956844E269D623757A54A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherNonoperatingIncomeExpenseAbstract" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpenseAbstract_4F8E33DD4102C5161FD99D6237573EFB" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeStatementAbstract_198174BBDF066B5C9A5E9D623757C3E9" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpenseAbstract_4F8E33DD4102C5161FD99D6237573EFB" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InterestAndDebtExpense" xlink:label="loc_us-gaap_InterestAndDebtExpense_BBB1FBFFFF8488494A229D6237576CEC" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OtherNonoperatingIncomeExpenseAbstract_4F8E33DD4102C5161FD99D6237573EFB" xlink:to="loc_us-gaap_InterestAndDebtExpense_BBB1FBFFFF8488494A229D6237576CEC" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_NetFASnonservicePensionBenefitExpense" xlink:label="loc_noc_NetFASnonservicePensionBenefitExpense_976E042FC5F5280FC25E9D623757775C" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OtherNonoperatingIncomeExpenseAbstract_4F8E33DD4102C5161FD99D6237573EFB" xlink:to="loc_noc_NetFASnonservicePensionBenefitExpense_976E042FC5F5280FC25E9D623757775C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanActuarialGainLossImmediateRecognitionAsComponentInNetPeriodicBenefitCostCredit" xlink:label="loc_us-gaap_DefinedBenefitPlanActuarialGainLossImmediateRecognitionAsComponentInNetPeriodicBenefitCostCredit_26F6C3FEFB2026D5C9ED9D6237578F35" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OtherNonoperatingIncomeExpenseAbstract_4F8E33DD4102C5161FD99D6237573EFB" xlink:to="loc_us-gaap_DefinedBenefitPlanActuarialGainLossImmediateRecognitionAsComponentInNetPeriodicBenefitCostCredit_26F6C3FEFB2026D5C9ED9D6237578F35" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherNonoperatingIncomeExpense" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_FF9BB78FB02A75B0AF319D623757D6F8" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OtherNonoperatingIncomeExpenseAbstract_4F8E33DD4102C5161FD99D6237573EFB" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_FF9BB78FB02A75B0AF319D623757D6F8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_32A9A0ECF1999749E9CA9D6237576099" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeStatementAbstract_198174BBDF066B5C9A5E9D623757C3E9" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_32A9A0ECF1999749E9CA9D6237576099" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_6835D7AC1727E69E660A9D62375773A0" xlink:type="locator" />
    <link:presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeStatementAbstract_198174BBDF066B5C9A5E9D623757C3E9" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_6835D7AC1727E69E660A9D62375773A0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_50CA5422C0998899DB639D623757C859" xlink:type="locator" />
    <link:presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeStatementAbstract_198174BBDF066B5C9A5E9D623757C3E9" xlink:to="loc_us-gaap_NetIncomeLoss_50CA5422C0998899DB639D623757C859" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EarningsPerShareBasicAbstract" xlink:label="loc_us-gaap_EarningsPerShareBasicAbstract_46CDAAF807F356D64BFC9D6237573098" xlink:type="locator" />
    <link:presentationArc order="8" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeStatementAbstract_198174BBDF066B5C9A5E9D623757C3E9" xlink:to="loc_us-gaap_EarningsPerShareBasicAbstract_46CDAAF807F356D64BFC9D6237573098" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EarningsPerShareBasic" xlink:label="loc_us-gaap_EarningsPerShareBasic_3C94957E41315E428C669D623757BB25" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EarningsPerShareBasicAbstract_46CDAAF807F356D64BFC9D6237573098" xlink:to="loc_us-gaap_EarningsPerShareBasic_3C94957E41315E428C669D623757BB25" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_23CC45AF9DD3A415AC579D6237578E2F" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EarningsPerShareBasicAbstract_46CDAAF807F356D64BFC9D6237573098" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_23CC45AF9DD3A415AC579D6237578E2F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EarningsPerShareDilutedAbstract" xlink:label="loc_us-gaap_EarningsPerShareDilutedAbstract_CF02D7551226EDFD5EAC9D6237578519" xlink:type="locator" />
    <link:presentationArc order="9" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeStatementAbstract_198174BBDF066B5C9A5E9D623757C3E9" xlink:to="loc_us-gaap_EarningsPerShareDilutedAbstract_CF02D7551226EDFD5EAC9D6237578519" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EarningsPerShareDiluted" xlink:label="loc_us-gaap_EarningsPerShareDiluted_619EB311D559602A58789D6237575855" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EarningsPerShareDilutedAbstract_CF02D7551226EDFD5EAC9D6237578519" xlink:to="loc_us-gaap_EarningsPerShareDiluted_619EB311D559602A58789D6237575855" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_54894F3C6A98272AEA369D6237573CC2" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EarningsPerShareDilutedAbstract_CF02D7551226EDFD5EAC9D6237578519" xlink:to="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_54894F3C6A98272AEA369D6237573CC2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_8DD0E3A76BFF8C78777C9D623757D899" xlink:type="locator" />
    <link:presentationArc order="10" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeStatementAbstract_198174BBDF066B5C9A5E9D623757C3E9" xlink:to="loc_us-gaap_NetIncomeLoss_8DD0E3A76BFF8C78777C9D623757D899" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_982D0B199D0DA81E40F89D62375794BF" xlink:type="locator" />
    <link:presentationArc order="11" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeStatementAbstract_198174BBDF066B5C9A5E9D623757C3E9" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_982D0B199D0DA81E40F89D62375794BF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_2534141E97EDFCD3B70E9D623757DC39" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_982D0B199D0DA81E40F89D62375794BF" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_2534141E97EDFCD3B70E9D623757DC39" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_3208E40DE69732A6892D9D623757680B" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_982D0B199D0DA81E40F89D62375794BF" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_3208E40DE69732A6892D9D623757680B" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_OtherComprehensiveIncomelossotheradjustmentnetoftax" xlink:label="loc_noc_OtherComprehensiveIncomelossotheradjustmentnetoftax_B3C18E1ED3D9B786DA579D623757B239" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_982D0B199D0DA81E40F89D62375794BF" xlink:to="loc_noc_OtherComprehensiveIncomelossotheradjustmentnetoftax_B3C18E1ED3D9B786DA579D623757B239" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_6811389820F6D7C7698F9D6237578A29" xlink:type="locator" />
    <link:presentationArc order="12" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeStatementAbstract_198174BBDF066B5C9A5E9D623757C3E9" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_6811389820F6D7C7698F9D6237578A29" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTax" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_95C586F5C770F16B88A19D623757EDA1" xlink:type="locator" />
    <link:presentationArc order="13" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeStatementAbstract_198174BBDF066B5C9A5E9D623757C3E9" xlink:to="loc_us-gaap_ComprehensiveIncomeNetOfTax_95C586F5C770F16B88A19D623757EDA1" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/ConsolidatedStatementsOfEarningsAndComprehensiveIncomeParenthetical" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeStatementAbstract" xlink:label="loc_us-gaap_IncomeStatementAbstract_E2DD49A46CD4701281F1977AA7420911" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax_0A15117A48CA958676C2977AA7423CAA" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeStatementAbstract_E2DD49A46CD4701281F1977AA7420911" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax_0A15117A48CA958676C2977AA7423CAA" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/ConsolidatedStatementsOfFinancialPosition" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementOfFinancialPositionAbstract" xlink:label="loc_us-gaap_StatementOfFinancialPositionAbstract_18E3736F3B4FC1B037A99F9B8A3ACF37" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AssetsAbstract" xlink:label="loc_us-gaap_AssetsAbstract_9D403BA162EE8D075BF99F9B8A3A78C8" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfFinancialPositionAbstract_18E3736F3B4FC1B037A99F9B8A3ACF37" xlink:to="loc_us-gaap_AssetsAbstract_9D403BA162EE8D075BF99F9B8A3A78C8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_E3047877E1CD6476748C9F9B8A3ABDD3" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsAbstract_9D403BA162EE8D075BF99F9B8A3A78C8" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_E3047877E1CD6476748C9F9B8A3ABDD3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountsReceivableNetCurrent" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_E517A19BBAFC477291439F9B8A3A6E0A" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsAbstract_9D403BA162EE8D075BF99F9B8A3A78C8" xlink:to="loc_us-gaap_AccountsReceivableNetCurrent_E517A19BBAFC477291439F9B8A3A6E0A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_UnbilledReceivablesCurrent" xlink:label="loc_us-gaap_UnbilledReceivablesCurrent_4862F0FB31A36E42CB7A9F9B8A3AF99C" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsAbstract_9D403BA162EE8D075BF99F9B8A3A78C8" xlink:to="loc_us-gaap_UnbilledReceivablesCurrent_4862F0FB31A36E42CB7A9F9B8A3AF99C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InventoryNet" xlink:label="loc_us-gaap_InventoryNet_269E1BCA52BC02D6E8DF9F9B8A3AFD15" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsAbstract_9D403BA162EE8D075BF99F9B8A3A78C8" xlink:to="loc_us-gaap_InventoryNet_269E1BCA52BC02D6E8DF9F9B8A3AFD15" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherAssetsCurrent" xlink:label="loc_us-gaap_OtherAssetsCurrent_9D2FB6E13EA2D9D810CD9F9B8A3A59D0" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsAbstract_9D403BA162EE8D075BF99F9B8A3A78C8" xlink:to="loc_us-gaap_OtherAssetsCurrent_9D2FB6E13EA2D9D810CD9F9B8A3A59D0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AssetsCurrent" xlink:label="loc_us-gaap_AssetsCurrent_A30FF0EA493B23DB12C69F9B8A3AC7C4" xlink:type="locator" />
    <link:presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsAbstract_9D403BA162EE8D075BF99F9B8A3A78C8" xlink:to="loc_us-gaap_AssetsCurrent_A30FF0EA493B23DB12C69F9B8A3AC7C4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_0B216F1FF072CEB558229F9B8A3A202C" xlink:type="locator" />
    <link:presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsAbstract_9D403BA162EE8D075BF99F9B8A3A78C8" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_0B216F1FF072CEB558229F9B8A3A202C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Goodwill" xlink:label="loc_us-gaap_Goodwill_AAEBBFC22335F5D216A29F9B8A3AC327" xlink:type="locator" />
    <link:presentationArc order="8" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsAbstract_9D403BA162EE8D075BF99F9B8A3A78C8" xlink:to="loc_us-gaap_Goodwill_AAEBBFC22335F5D216A29F9B8A3AC327" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_8534CF86BCE9F8E146709F9B8A3A9481" xlink:type="locator" />
    <link:presentationArc order="9" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsAbstract_9D403BA162EE8D075BF99F9B8A3A78C8" xlink:to="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_8534CF86BCE9F8E146709F9B8A3A9481" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredTaxAssetsLiabilitiesNetNoncurrent" xlink:label="loc_us-gaap_DeferredTaxAssetsLiabilitiesNetNoncurrent_85C369E05B1231DEBB919F9B8A3A28B4" xlink:type="locator" />
    <link:presentationArc order="10" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsAbstract_9D403BA162EE8D075BF99F9B8A3A78C8" xlink:to="loc_us-gaap_DeferredTaxAssetsLiabilitiesNetNoncurrent_85C369E05B1231DEBB919F9B8A3A28B4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherAssetsNoncurrent" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_C523E346578F6C0CEAD09F9B8A3A453A" xlink:type="locator" />
    <link:presentationArc order="11" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsAbstract_9D403BA162EE8D075BF99F9B8A3A78C8" xlink:to="loc_us-gaap_OtherAssetsNoncurrent_C523E346578F6C0CEAD09F9B8A3A453A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Assets" xlink:label="loc_us-gaap_Assets_5AA50A7A8056580071159F9B8A3A3BB2" xlink:type="locator" />
    <link:presentationArc order="12" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsAbstract_9D403BA162EE8D075BF99F9B8A3A78C8" xlink:to="loc_us-gaap_Assets_5AA50A7A8056580071159F9B8A3A3BB2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LiabilitiesAbstract" xlink:label="loc_us-gaap_LiabilitiesAbstract_B8B5BCFC403BCD0653329F9B8A3A12FE" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfFinancialPositionAbstract_18E3736F3B4FC1B037A99F9B8A3ACF37" xlink:to="loc_us-gaap_LiabilitiesAbstract_B8B5BCFC403BCD0653329F9B8A3A12FE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountsPayableCurrent" xlink:label="loc_us-gaap_AccountsPayableCurrent_0198D37B3DDDEF1FD91B9F9B8A3A6013" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesAbstract_B8B5BCFC403BCD0653329F9B8A3A12FE" xlink:to="loc_us-gaap_AccountsPayableCurrent_0198D37B3DDDEF1FD91B9F9B8A3A6013" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrent" xlink:label="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_10905C04E5CF130E76DF9F9B8A3AC41A" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesAbstract_B8B5BCFC403BCD0653329F9B8A3A12FE" xlink:to="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_10905C04E5CF130E76DF9F9B8A3AC41A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CustomerAdvancesCurrent" xlink:label="loc_us-gaap_CustomerAdvancesCurrent_E476A2759689B1BDC0D49F9B8A3A4CF7" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesAbstract_B8B5BCFC403BCD0653329F9B8A3A12FE" xlink:to="loc_us-gaap_CustomerAdvancesCurrent_E476A2759689B1BDC0D49F9B8A3A4CF7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherLiabilitiesCurrent" xlink:label="loc_us-gaap_OtherLiabilitiesCurrent_3326A260D81788E0E0CD9F9B8A3AB04C" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesAbstract_B8B5BCFC403BCD0653329F9B8A3A12FE" xlink:to="loc_us-gaap_OtherLiabilitiesCurrent_3326A260D81788E0E0CD9F9B8A3AB04C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LiabilitiesCurrent" xlink:label="loc_us-gaap_LiabilitiesCurrent_59CAFB87B9727D4C0AEC9F9B8A3AA9FE" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesAbstract_B8B5BCFC403BCD0653329F9B8A3A12FE" xlink:to="loc_us-gaap_LiabilitiesCurrent_59CAFB87B9727D4C0AEC9F9B8A3AA9FE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligations" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_1F11F95ED12433AFA52B9F9B8A3A2713" xlink:type="locator" />
    <link:presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesAbstract_B8B5BCFC403BCD0653329F9B8A3A12FE" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_1F11F95ED12433AFA52B9F9B8A3A2713" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent" xlink:label="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_4AB2FDE9BD44765F49B69F9B8A3A7466" xlink:type="locator" />
    <link:presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesAbstract_B8B5BCFC403BCD0653329F9B8A3A12FE" xlink:to="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_4AB2FDE9BD44765F49B69F9B8A3A7466" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredTaxLiabilitiesNoncurrent" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesNoncurrent_B2F653B9C0C5DF12DE009F9B8A3A0505" xlink:type="locator" />
    <link:presentationArc order="8" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesAbstract_B8B5BCFC403BCD0653329F9B8A3A12FE" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesNoncurrent_B2F653B9C0C5DF12DE009F9B8A3A0505" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherLiabilitiesNoncurrent" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_C1B3100C712EC43CA6809F9B8A3A071C" xlink:type="locator" />
    <link:presentationArc order="9" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesAbstract_B8B5BCFC403BCD0653329F9B8A3A12FE" xlink:to="loc_us-gaap_OtherLiabilitiesNoncurrent_C1B3100C712EC43CA6809F9B8A3A071C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Liabilities" xlink:label="loc_us-gaap_Liabilities_01DA635C2F28C3CDC9DD9F9B8A3AAE94" xlink:type="locator" />
    <link:presentationArc order="10" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesAbstract_B8B5BCFC403BCD0653329F9B8A3A12FE" xlink:to="loc_us-gaap_Liabilities_01DA635C2F28C3CDC9DD9F9B8A3AAE94" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommitmentsAndContingencies" xlink:label="loc_us-gaap_CommitmentsAndContingencies_AF423D660433EFF6A1F09F9B8A3AD8C5" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfFinancialPositionAbstract_18E3736F3B4FC1B037A99F9B8A3ACF37" xlink:to="loc_us-gaap_CommitmentsAndContingencies_AF423D660433EFF6A1F09F9B8A3AD8C5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockholdersEquityAbstract" xlink:label="loc_us-gaap_StockholdersEquityAbstract_CA8C9CA78A409CA2751F9F9B8A3A24AF" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfFinancialPositionAbstract_18E3736F3B4FC1B037A99F9B8A3ACF37" xlink:to="loc_us-gaap_StockholdersEquityAbstract_CA8C9CA78A409CA2751F9F9B8A3A24AF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PreferredStockValue" xlink:label="loc_us-gaap_PreferredStockValue_CE027ABEB0A42BFDA9089F9B8A3A15F4" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StockholdersEquityAbstract_CA8C9CA78A409CA2751F9F9B8A3A24AF" xlink:to="loc_us-gaap_PreferredStockValue_CE027ABEB0A42BFDA9089F9B8A3A15F4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommonStockValue" xlink:label="loc_us-gaap_CommonStockValue_EE582318D4DD14C19A9D9F9B8A3A73B7" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StockholdersEquityAbstract_CA8C9CA78A409CA2751F9F9B8A3A24AF" xlink:to="loc_us-gaap_CommonStockValue_EE582318D4DD14C19A9D9F9B8A3A73B7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdditionalPaidInCapitalCommonStock" xlink:label="loc_us-gaap_AdditionalPaidInCapitalCommonStock_C8E328A120C49DF10E369F9B8A3A21B6" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StockholdersEquityAbstract_CA8C9CA78A409CA2751F9F9B8A3A24AF" xlink:to="loc_us-gaap_AdditionalPaidInCapitalCommonStock_C8E328A120C49DF10E369F9B8A3A21B6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_98F84C2BA4C69187EB329F9B8A3A8B0C" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StockholdersEquityAbstract_CA8C9CA78A409CA2751F9F9B8A3A24AF" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_98F84C2BA4C69187EB329F9B8A3A8B0C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_E1194826C257C17D3E149F9B8A3A0121" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StockholdersEquityAbstract_CA8C9CA78A409CA2751F9F9B8A3A24AF" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_E1194826C257C17D3E149F9B8A3A0121" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockholdersEquity" xlink:label="loc_us-gaap_StockholdersEquity_DFA9169C33F50FA201079F9B8A3A871B" xlink:type="locator" />
    <link:presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StockholdersEquityAbstract_CA8C9CA78A409CA2751F9F9B8A3A24AF" xlink:to="loc_us-gaap_StockholdersEquity_DFA9169C33F50FA201079F9B8A3A871B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_5451BC61C5FCC47171EB9F9B8A3A5CDD" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfFinancialPositionAbstract_18E3736F3B4FC1B037A99F9B8A3ACF37" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquity_5451BC61C5FCC47171EB9F9B8A3A5CDD" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/ConsolidatedStatementsOfFinancialPositionParenthetical" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementOfFinancialPositionAbstract" xlink:label="loc_us-gaap_StatementOfFinancialPositionAbstract_0441BD2A4DD4EBF47EC59F9B00B808AA" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:label="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_F7B0FD078182306E68929F9B00B87937" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfFinancialPositionAbstract_0441BD2A4DD4EBF47EC59F9B00B808AA" xlink:to="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_F7B0FD078182306E68929F9B00B87937" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_79BE9A1ECB08D9083A7A9FA59852680C" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfFinancialPositionAbstract_0441BD2A4DD4EBF47EC59F9B00B808AA" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_79BE9A1ECB08D9083A7A9FA59852680C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PreferredStockParOrStatedValuePerShare" xlink:label="loc_us-gaap_PreferredStockParOrStatedValuePerShare_D48D1E9C02FC46D970F89F9B00B80A9E" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfFinancialPositionAbstract_0441BD2A4DD4EBF47EC59F9B00B808AA" xlink:to="loc_us-gaap_PreferredStockParOrStatedValuePerShare_D48D1E9C02FC46D970F89F9B00B80A9E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PreferredStockSharesAuthorized" xlink:label="loc_us-gaap_PreferredStockSharesAuthorized_0CA0010E1431DAA37FFB9F9B00B888E0" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfFinancialPositionAbstract_0441BD2A4DD4EBF47EC59F9B00B808AA" xlink:to="loc_us-gaap_PreferredStockSharesAuthorized_0CA0010E1431DAA37FFB9F9B00B888E0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PreferredStockSharesIssued" xlink:label="loc_us-gaap_PreferredStockSharesIssued_49012DEB7EC2BA00232A9F9B00B8C78B" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfFinancialPositionAbstract_0441BD2A4DD4EBF47EC59F9B00B808AA" xlink:to="loc_us-gaap_PreferredStockSharesIssued_49012DEB7EC2BA00232A9F9B00B8C78B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PreferredStockSharesOutstanding" xlink:label="loc_us-gaap_PreferredStockSharesOutstanding_DD45654233961A47F0199F9B00B80043" xlink:type="locator" />
    <link:presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfFinancialPositionAbstract_0441BD2A4DD4EBF47EC59F9B00B808AA" xlink:to="loc_us-gaap_PreferredStockSharesOutstanding_DD45654233961A47F0199F9B00B80043" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommonStockParOrStatedValuePerShare" xlink:label="loc_us-gaap_CommonStockParOrStatedValuePerShare_751E446D904F9784A41E9F9B00B83BF5" xlink:type="locator" />
    <link:presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfFinancialPositionAbstract_0441BD2A4DD4EBF47EC59F9B00B808AA" xlink:to="loc_us-gaap_CommonStockParOrStatedValuePerShare_751E446D904F9784A41E9F9B00B83BF5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommonStockSharesAuthorized" xlink:label="loc_us-gaap_CommonStockSharesAuthorized_6BE68031A57F4BA6C7E09F9B00B83D7D" xlink:type="locator" />
    <link:presentationArc order="8" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfFinancialPositionAbstract_0441BD2A4DD4EBF47EC59F9B00B808AA" xlink:to="loc_us-gaap_CommonStockSharesAuthorized_6BE68031A57F4BA6C7E09F9B00B83D7D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommonStockSharesIssued" xlink:label="loc_us-gaap_CommonStockSharesIssued_9D9B6C4A75A2B9D2ED579F9B00B8AC38" xlink:type="locator" />
    <link:presentationArc order="9" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfFinancialPositionAbstract_0441BD2A4DD4EBF47EC59F9B00B808AA" xlink:to="loc_us-gaap_CommonStockSharesIssued_9D9B6C4A75A2B9D2ED579F9B00B8AC38" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommonStockSharesOutstanding" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_685A286C80E8EE73E1499F9B00B81088" xlink:type="locator" />
    <link:presentationArc order="10" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfFinancialPositionAbstract_0441BD2A4DD4EBF47EC59F9B00B808AA" xlink:to="loc_us-gaap_CommonStockSharesOutstanding_685A286C80E8EE73E1499F9B00B81088" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/DocumentAndEntityInformation" xlink:type="extended">
    <link:loc xlink:href="noc-20181231.xsd#noc_DocumentAndEntityInformationAbstract" xlink:label="loc_noc_DocumentAndEntityInformationAbstract_F59F8F10E04A2132DEEE9F89B94699DB" xlink:type="locator" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityRegistrantName" xlink:label="loc_dei_EntityRegistrantName_B48805E3FA324F95942F9F89B95699DA" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_noc_DocumentAndEntityInformationAbstract_F59F8F10E04A2132DEEE9F89B94699DB" xlink:to="loc_dei_EntityRegistrantName_B48805E3FA324F95942F9F89B95699DA" xlink:type="arc" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityCentralIndexKey" xlink:label="loc_dei_EntityCentralIndexKey_BDDDA40B82E8F69FDF099F89B9562CE6" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_noc_DocumentAndEntityInformationAbstract_F59F8F10E04A2132DEEE9F89B94699DB" xlink:to="loc_dei_EntityCentralIndexKey_BDDDA40B82E8F69FDF099F89B9562CE6" xlink:type="arc" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_DocumentType" xlink:label="loc_dei_DocumentType_8B7B54F5C145DB04EF6F9F89B956CCF1" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_noc_DocumentAndEntityInformationAbstract_F59F8F10E04A2132DEEE9F89B94699DB" xlink:to="loc_dei_DocumentType_8B7B54F5C145DB04EF6F9F89B956CCF1" xlink:type="arc" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_AmendmentFlag" xlink:label="loc_dei_AmendmentFlag_1829EF7F6FF3660AC8479F89B9567EAB" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_noc_DocumentAndEntityInformationAbstract_F59F8F10E04A2132DEEE9F89B94699DB" xlink:to="loc_dei_AmendmentFlag_1829EF7F6FF3660AC8479F89B9567EAB" xlink:type="arc" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_DocumentFiscalYearFocus" xlink:label="loc_dei_DocumentFiscalYearFocus_C06EE5211820EE609AA69F89B9569520" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_noc_DocumentAndEntityInformationAbstract_F59F8F10E04A2132DEEE9F89B94699DB" xlink:to="loc_dei_DocumentFiscalYearFocus_C06EE5211820EE609AA69F89B9569520" xlink:type="arc" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_DocumentPeriodEndDate" xlink:label="loc_dei_DocumentPeriodEndDate_BCB7B00B84D43FDD24679F89B9560294" xlink:type="locator" />
    <link:presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_noc_DocumentAndEntityInformationAbstract_F59F8F10E04A2132DEEE9F89B94699DB" xlink:to="loc_dei_DocumentPeriodEndDate_BCB7B00B84D43FDD24679F89B9560294" xlink:type="arc" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_DocumentFiscalPeriodFocus" xlink:label="loc_dei_DocumentFiscalPeriodFocus_96453071C3F29EDBB2849F89B95682DB" xlink:type="locator" />
    <link:presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_noc_DocumentAndEntityInformationAbstract_F59F8F10E04A2132DEEE9F89B94699DB" xlink:to="loc_dei_DocumentFiscalPeriodFocus_96453071C3F29EDBB2849F89B95682DB" xlink:type="arc" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_CurrentFiscalYearEndDate" xlink:label="loc_dei_CurrentFiscalYearEndDate_15BFCFD7FAA7CC9EABEF9F89B956E739" xlink:type="locator" />
    <link:presentationArc order="8" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_noc_DocumentAndEntityInformationAbstract_F59F8F10E04A2132DEEE9F89B94699DB" xlink:to="loc_dei_CurrentFiscalYearEndDate_15BFCFD7FAA7CC9EABEF9F89B956E739" xlink:type="arc" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityWellKnownSeasonedIssuer" xlink:label="loc_dei_EntityWellKnownSeasonedIssuer_E96A9E2402249B36BA619F89B956B5E7" xlink:type="locator" />
    <link:presentationArc order="9" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_noc_DocumentAndEntityInformationAbstract_F59F8F10E04A2132DEEE9F89B94699DB" xlink:to="loc_dei_EntityWellKnownSeasonedIssuer_E96A9E2402249B36BA619F89B956B5E7" xlink:type="arc" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityVoluntaryFilers" xlink:label="loc_dei_EntityVoluntaryFilers_5AC4A7EF9E882B08D8E19F89B9569BEB" xlink:type="locator" />
    <link:presentationArc order="10" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_noc_DocumentAndEntityInformationAbstract_F59F8F10E04A2132DEEE9F89B94699DB" xlink:to="loc_dei_EntityVoluntaryFilers_5AC4A7EF9E882B08D8E19F89B9569BEB" xlink:type="arc" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityCurrentReportingStatus" xlink:label="loc_dei_EntityCurrentReportingStatus_86332817F208D6FE94129F89B95628B2" xlink:type="locator" />
    <link:presentationArc order="11" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_noc_DocumentAndEntityInformationAbstract_F59F8F10E04A2132DEEE9F89B94699DB" xlink:to="loc_dei_EntityCurrentReportingStatus_86332817F208D6FE94129F89B95628B2" xlink:type="arc" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityFilerCategory" xlink:label="loc_dei_EntityFilerCategory_4FAF67DAEB16E76C7B819F89B9563DB4" xlink:type="locator" />
    <link:presentationArc order="12" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_noc_DocumentAndEntityInformationAbstract_F59F8F10E04A2132DEEE9F89B94699DB" xlink:to="loc_dei_EntityFilerCategory_4FAF67DAEB16E76C7B819F89B9563DB4" xlink:type="arc" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntitySmallBusiness" xlink:label="loc_dei_EntitySmallBusiness_A269793C8B0DA651F7569F89B956A17D" xlink:type="locator" />
    <link:presentationArc order="13" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_noc_DocumentAndEntityInformationAbstract_F59F8F10E04A2132DEEE9F89B94699DB" xlink:to="loc_dei_EntitySmallBusiness_A269793C8B0DA651F7569F89B956A17D" xlink:type="arc" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityEmergingGrowthCompany" xlink:label="loc_dei_EntityEmergingGrowthCompany_83E65C592C21CFFAF8889F89B956670F" xlink:type="locator" />
    <link:presentationArc order="14" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_noc_DocumentAndEntityInformationAbstract_F59F8F10E04A2132DEEE9F89B94699DB" xlink:to="loc_dei_EntityEmergingGrowthCompany_83E65C592C21CFFAF8889F89B956670F" xlink:type="arc" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityShellCompany" xlink:label="loc_dei_EntityShellCompany_AF7C3EA21560744ACE049F89B956F431" xlink:type="locator" />
    <link:presentationArc order="15" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_noc_DocumentAndEntityInformationAbstract_F59F8F10E04A2132DEEE9F89B94699DB" xlink:to="loc_dei_EntityShellCompany_AF7C3EA21560744ACE049F89B956F431" xlink:type="arc" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityPublicFloat" xlink:label="loc_dei_EntityPublicFloat_D7E92DC441AE71B5053B9F89B95648C6" xlink:type="locator" />
    <link:presentationArc order="16" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_noc_DocumentAndEntityInformationAbstract_F59F8F10E04A2132DEEE9F89B94699DB" xlink:to="loc_dei_EntityPublicFloat_D7E92DC441AE71B5053B9F89B95648C6" xlink:type="arc" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityCommonStockSharesOutstanding" xlink:label="loc_dei_EntityCommonStockSharesOutstanding_754BF7D4D1893F7257369F89B956F747" xlink:type="locator" />
    <link:presentationArc order="17" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_noc_DocumentAndEntityInformationAbstract_F59F8F10E04A2132DEEE9F89B94699DB" xlink:to="loc_dei_EntityCommonStockSharesOutstanding_754BF7D4D1893F7257369F89B956F747" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/EarningsPerShareShareRepurchasesAndDividendsOnCommonStock" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EarningsPerShareAbstract" xlink:label="loc_us-gaap_EarningsPerShareAbstract_5E0A68156266F3AB4B4D977AA6780DB4" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockholdersEquityNoteDisclosureTextBlock" xlink:label="loc_us-gaap_StockholdersEquityNoteDisclosureTextBlock_D4D2C5ED7D09F2F79DC8977AA6782219" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EarningsPerShareAbstract_5E0A68156266F3AB4B4D977AA6780DB4" xlink:to="loc_us-gaap_StockholdersEquityNoteDisclosureTextBlock_D4D2C5ED7D09F2F79DC8977AA6782219" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/EarningsPerShareShareRepurchasesAndDividendsOnCommonStockDetails1" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EarningsPerShareAbstract" xlink:label="loc_us-gaap_EarningsPerShareAbstract_2EE1208298A47A1618609C615C788508" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ClassOfTreasuryStockTable" xlink:label="loc_us-gaap_ClassOfTreasuryStockTable_5E61C8C728620B6785D19C615C782989" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EarningsPerShareAbstract_2EE1208298A47A1618609C615C788508" xlink:to="loc_us-gaap_ClassOfTreasuryStockTable_5E61C8C728620B6785D19C615C782989" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareRepurchaseProgramAxis" xlink:label="loc_us-gaap_ShareRepurchaseProgramAxis_C787DD63BBF7439EF8EC9C615C7859FC" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfTreasuryStockTable_5E61C8C728620B6785D19C615C782989" xlink:to="loc_us-gaap_ShareRepurchaseProgramAxis_C787DD63BBF7439EF8EC9C615C7859FC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareRepurchaseProgramDomain" xlink:label="loc_us-gaap_ShareRepurchaseProgramDomain_FC6928FD09AC05A1B93D9C615C786492" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareRepurchaseProgramAxis_C787DD63BBF7439EF8EC9C615C7859FC" xlink:to="loc_us-gaap_ShareRepurchaseProgramDomain_FC6928FD09AC05A1B93D9C615C786492" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_December2014ShareRepurchaseOriginalAuthorizationDomain" xlink:label="loc_noc_December2014ShareRepurchaseOriginalAuthorizationDomain_085B8E69BFA6BB79672E9C615C78CE43" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareRepurchaseProgramDomain_FC6928FD09AC05A1B93D9C615C786492" xlink:to="loc_noc_December2014ShareRepurchaseOriginalAuthorizationDomain_085B8E69BFA6BB79672E9C615C78CE43" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_September2015ShareRepurchaseOriginalAuthorizationMember" xlink:label="loc_noc_September2015ShareRepurchaseOriginalAuthorizationMember_EA7FDD63F745A98690C19C615C78028B" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareRepurchaseProgramDomain_FC6928FD09AC05A1B93D9C615C786492" xlink:to="loc_noc_September2015ShareRepurchaseOriginalAuthorizationMember_EA7FDD63F745A98690C19C615C78028B" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_December2018ShareRepurchaseOriginalAuthorizationMember" xlink:label="loc_noc_December2018ShareRepurchaseOriginalAuthorizationMember_B6D079C31914617E46719C615C781FA6" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareRepurchaseProgramDomain_FC6928FD09AC05A1B93D9C615C786492" xlink:to="loc_noc_December2018ShareRepurchaseOriginalAuthorizationMember_B6D079C31914617E46719C615C781FA6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquityClassOfTreasuryStockLineItems" xlink:label="loc_us-gaap_EquityClassOfTreasuryStockLineItems_D333FB9EB9D0AEEAE97B9C615C782F55" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfTreasuryStockTable_5E61C8C728620B6785D19C615C782989" xlink:to="loc_us-gaap_EquityClassOfTreasuryStockLineItems_D333FB9EB9D0AEEAE97B9C615C782F55" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockRepurchaseProgramAuthorizedAmount1" xlink:label="loc_us-gaap_StockRepurchaseProgramAuthorizedAmount1_41633F2599BD0F3067569C615C78CB44" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquityClassOfTreasuryStockLineItems_D333FB9EB9D0AEEAE97B9C615C782F55" xlink:to="loc_us-gaap_StockRepurchaseProgramAuthorizedAmount1_41633F2599BD0F3067569C615C78CB44" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TreasuryStockSharesRetired" xlink:label="loc_us-gaap_TreasuryStockSharesRetired_24C5895AED62C6AC143A9C615C78EAF6" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquityClassOfTreasuryStockLineItems_D333FB9EB9D0AEEAE97B9C615C782F55" xlink:to="loc_us-gaap_TreasuryStockSharesRetired_24C5895AED62C6AC143A9C615C78EAF6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TreasuryStockAcquiredAverageCostPerShare" xlink:label="loc_us-gaap_TreasuryStockAcquiredAverageCostPerShare_824201D32663B040822E9C615C788727" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquityClassOfTreasuryStockLineItems_D333FB9EB9D0AEEAE97B9C615C782F55" xlink:to="loc_us-gaap_TreasuryStockAcquiredAverageCostPerShare_824201D32663B040822E9C615C788727" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockRepurchasedAndRetiredDuringPeriodShares" xlink:label="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodShares_CE2E50FF5A07A391B5349C615C7854EC" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquityClassOfTreasuryStockLineItems_D333FB9EB9D0AEEAE97B9C615C782F55" xlink:to="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodShares_CE2E50FF5A07A391B5349C615C7854EC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TreasuryStockValueAcquiredParValueMethod" xlink:label="loc_us-gaap_TreasuryStockValueAcquiredParValueMethod_435E1C3C7DFD334140939C615C78E646" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquityClassOfTreasuryStockLineItems_D333FB9EB9D0AEEAE97B9C615C782F55" xlink:to="loc_us-gaap_TreasuryStockValueAcquiredParValueMethod_435E1C3C7DFD334140939C615C78E646" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1" xlink:label="loc_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1_58F0142C681FC66C332C9C615C78B0D6" xlink:type="locator" />
    <link:presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquityClassOfTreasuryStockLineItems_D333FB9EB9D0AEEAE97B9C615C782F55" xlink:to="loc_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1_58F0142C681FC66C332C9C615C78B0D6" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/EarningsPerShareShareRepurchasesAndDividendsOnCommonStockDetails2" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EarningsPerShareAbstract" xlink:label="loc_us-gaap_EarningsPerShareAbstract_8497EDC678C9694120449D25DF32EACB" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ClassOfTreasuryStockTable" xlink:label="loc_us-gaap_ClassOfTreasuryStockTable_0333F919EE0BE6A50D869D25DF326437" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EarningsPerShareAbstract_8497EDC678C9694120449D25DF32EACB" xlink:to="loc_us-gaap_ClassOfTreasuryStockTable_0333F919EE0BE6A50D869D25DF326437" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareRepurchaseProgramAxis" xlink:label="loc_us-gaap_ShareRepurchaseProgramAxis_988016C7EB53F2AB15A99D25DF32699F" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfTreasuryStockTable_0333F919EE0BE6A50D869D25DF326437" xlink:to="loc_us-gaap_ShareRepurchaseProgramAxis_988016C7EB53F2AB15A99D25DF32699F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareRepurchaseProgramDomain" xlink:label="loc_us-gaap_ShareRepurchaseProgramDomain_89F153D3BECEBB4520399D25DF32D259" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareRepurchaseProgramAxis_988016C7EB53F2AB15A99D25DF32699F" xlink:to="loc_us-gaap_ShareRepurchaseProgramDomain_89F153D3BECEBB4520399D25DF32D259" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_September2015ShareRepurchaseOriginalAuthorizationMember" xlink:label="loc_noc_September2015ShareRepurchaseOriginalAuthorizationMember_E7343BB9E55D66837C279D25DF3298C1" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareRepurchaseProgramDomain_89F153D3BECEBB4520399D25DF32D259" xlink:to="loc_noc_September2015ShareRepurchaseOriginalAuthorizationMember_E7343BB9E55D66837C279D25DF3298C1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SubsequentEventTypeAxis" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_A56E78CF382E4B2B44A29D25DF326DA0" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfTreasuryStockTable_0333F919EE0BE6A50D869D25DF326437" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_A56E78CF382E4B2B44A29D25DF326DA0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SubsequentEventTypeDomain" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_E4946A8BFDD0052BB1489D25DF320319" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_A56E78CF382E4B2B44A29D25DF326DA0" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_E4946A8BFDD0052BB1489D25DF320319" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_AcceleratedShareRepurchaseSettlementMember" xlink:label="loc_noc_AcceleratedShareRepurchaseSettlementMember_74AFAB235AE3E6C1142C9D25DF321B19" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_E4946A8BFDD0052BB1489D25DF320319" xlink:to="loc_noc_AcceleratedShareRepurchaseSettlementMember_74AFAB235AE3E6C1142C9D25DF321B19" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquityClassOfTreasuryStockLineItems" xlink:label="loc_us-gaap_EquityClassOfTreasuryStockLineItems_2DCC21FF669137D070F49D25DF3299C7" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfTreasuryStockTable_0333F919EE0BE6A50D869D25DF326437" xlink:to="loc_us-gaap_EquityClassOfTreasuryStockLineItems_2DCC21FF669137D070F49D25DF3299C7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TreasuryStockValueAcquiredParValueMethod" xlink:label="loc_us-gaap_TreasuryStockValueAcquiredParValueMethod_44185E2F786F4893685B9D25DF326749" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquityClassOfTreasuryStockLineItems_2DCC21FF669137D070F49D25DF3299C7" xlink:to="loc_us-gaap_TreasuryStockValueAcquiredParValueMethod_44185E2F786F4893685B9D25DF326749" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_AcceleratedShareRepurchase" xlink:label="loc_noc_AcceleratedShareRepurchase_472608853CC7355F16069D25DF32141F" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquityClassOfTreasuryStockLineItems_2DCC21FF669137D070F49D25DF3299C7" xlink:to="loc_noc_AcceleratedShareRepurchase_472608853CC7355F16069D25DF32141F" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_AcceleratedShareRepurchasesPayment" xlink:label="loc_noc_AcceleratedShareRepurchasesPayment_DDDFDC8EA7DE2DF7399A9D25DF32CA54" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquityClassOfTreasuryStockLineItems_2DCC21FF669137D070F49D25DF3299C7" xlink:to="loc_noc_AcceleratedShareRepurchasesPayment_DDDFDC8EA7DE2DF7399A9D25DF32CA54" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_Acceleratedsharerepurchaseinitialreceiptshares" xlink:label="loc_noc_Acceleratedsharerepurchaseinitialreceiptshares_604D4FAB1529D2AB66159D25DF32C26C" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquityClassOfTreasuryStockLineItems_2DCC21FF669137D070F49D25DF3299C7" xlink:to="loc_noc_Acceleratedsharerepurchaseinitialreceiptshares_604D4FAB1529D2AB66159D25DF32C26C" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_AcceleratedShareRepurchaseInitialReceiptMonetary" xlink:label="loc_noc_AcceleratedShareRepurchaseInitialReceiptMonetary_ECD70A537B8C0644372E9D25DF3C3D8F" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquityClassOfTreasuryStockLineItems_2DCC21FF669137D070F49D25DF3299C7" xlink:to="loc_noc_AcceleratedShareRepurchaseInitialReceiptMonetary_ECD70A537B8C0644372E9D25DF3C3D8F" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_AcceleratedShareRepurchaseFinalReceiptMonetary" xlink:label="loc_noc_AcceleratedShareRepurchaseFinalReceiptMonetary_1E2F7579D11546B92E8D9D25DF3CAD1E" xlink:type="locator" />
    <link:presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquityClassOfTreasuryStockLineItems_2DCC21FF669137D070F49D25DF3299C7" xlink:to="loc_noc_AcceleratedShareRepurchaseFinalReceiptMonetary_1E2F7579D11546B92E8D9D25DF3CAD1E" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_AcceleratedShareRepurchaseFinalReceiptShares" xlink:label="loc_noc_AcceleratedShareRepurchaseFinalReceiptShares_994968F993A308C0F3FF9D25DF3CD54C" xlink:type="locator" />
    <link:presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquityClassOfTreasuryStockLineItems_2DCC21FF669137D070F49D25DF3299C7" xlink:to="loc_noc_AcceleratedShareRepurchaseFinalReceiptShares_994968F993A308C0F3FF9D25DF3CD54C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AcceleratedShareRepurchasesFinalPricePaidPerShare" xlink:label="loc_us-gaap_AcceleratedShareRepurchasesFinalPricePaidPerShare_3C8C2510DBE9A107FCAF9D25DF3C0742" xlink:type="locator" />
    <link:presentationArc order="8" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquityClassOfTreasuryStockLineItems_2DCC21FF669137D070F49D25DF3299C7" xlink:to="loc_us-gaap_AcceleratedShareRepurchasesFinalPricePaidPerShare_3C8C2510DBE9A107FCAF9D25DF3C0742" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EarningsPerShareBasicAndDilutedAbstract" xlink:label="loc_us-gaap_EarningsPerShareBasicAndDilutedAbstract_A54928D1018B0E3538579D25DF3CA01F" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EarningsPerShareAbstract_8497EDC678C9694120449D25DF32EACB" xlink:to="loc_us-gaap_EarningsPerShareBasicAndDilutedAbstract_A54928D1018B0E3538579D25DF3CA01F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements" xlink:label="loc_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_3D85DD123D5F73FC6B2E9D25DF3C5F3B" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EarningsPerShareBasicAndDilutedAbstract_A54928D1018B0E3538579D25DF3CA01F" xlink:to="loc_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_3D85DD123D5F73FC6B2E9D25DF3C5F3B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockRepurchaseProgramAuthorizedAmount1" xlink:label="loc_us-gaap_StockRepurchaseProgramAuthorizedAmount1_A7F158FAD6F82F03E7379D25DF3CD842" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EarningsPerShareAbstract_8497EDC678C9694120449D25DF32EACB" xlink:to="loc_us-gaap_StockRepurchaseProgramAuthorizedAmount1_A7F158FAD6F82F03E7379D25DF3CD842" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_IncreaseDecreaseinStockDividendPercentage" xlink:label="loc_noc_IncreaseDecreaseinStockDividendPercentage_EB39060D9A92EB457DD49D25DF3C0058" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EarningsPerShareAbstract_8497EDC678C9694120449D25DF32EACB" xlink:to="loc_noc_IncreaseDecreaseinStockDividendPercentage_EB39060D9A92EB457DD49D25DF3C0058" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommonStockDividendsPerShareDeclared" xlink:label="loc_us-gaap_CommonStockDividendsPerShareDeclared_13C0B1FD98877C46D4AE9D25DF3CAEEF" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EarningsPerShareAbstract_8497EDC678C9694120449D25DF32EACB" xlink:to="loc_us-gaap_CommonStockDividendsPerShareDeclared_13C0B1FD98877C46D4AE9D25DF3CAEEF" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/EarningsPerShareShareRepurchasesAndDividendsOnCommonStockTables" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EarningsPerShareAbstract" xlink:label="loc_us-gaap_EarningsPerShareAbstract_BDEDC2A6C77495D3EA329BB84D070CC7" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfTreasuryStockByClassTextBlock" xlink:label="loc_us-gaap_ScheduleOfTreasuryStockByClassTextBlock_C819AC997BAD2DCA19DE9BB84D07F1B0" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EarningsPerShareAbstract_BDEDC2A6C77495D3EA329BB84D070CC7" xlink:to="loc_us-gaap_ScheduleOfTreasuryStockByClassTextBlock_C819AC997BAD2DCA19DE9BB84D07F1B0" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/FairValueOfFinancialInstruments" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueDisclosuresAbstract" xlink:label="loc_us-gaap_FairValueDisclosuresAbstract_56E0FC6CC9D9FC7150DA977AA5DC7AC7" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueDisclosuresTextBlock" xlink:label="loc_us-gaap_FairValueDisclosuresTextBlock_C9AC7239896046877501977AA5DC9584" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueDisclosuresAbstract_56E0FC6CC9D9FC7150DA977AA5DC7AC7" xlink:to="loc_us-gaap_FairValueDisclosuresTextBlock_C9AC7239896046877501977AA5DC9584" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/FairValueOfFinancialInstrumentsDetails1" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueDisclosuresAbstract" xlink:label="loc_us-gaap_FairValueDisclosuresAbstract_99D3B06CB062CA423B0B977AA5B014FE" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_F7C55E268DA62607E7DA977AA5B09936" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueDisclosuresAbstract_99D3B06CB062CA423B0B977AA5B014FE" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_F7C55E268DA62607E7DA977AA5B09936" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueByMeasurementFrequencyAxis" xlink:label="loc_us-gaap_FairValueByMeasurementFrequencyAxis_1B3DD322CC4CF0387649977AA5B0DB9E" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_F7C55E268DA62607E7DA977AA5B09936" xlink:to="loc_us-gaap_FairValueByMeasurementFrequencyAxis_1B3DD322CC4CF0387649977AA5B0DB9E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueMeasurementFrequencyDomain" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_04B8B8E8CF7263938678977AA5B17574" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_1B3DD322CC4CF0387649977AA5B0DB9E" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_04B8B8E8CF7263938678977AA5B17574" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueMeasurementsRecurringMember" xlink:label="loc_us-gaap_FairValueMeasurementsRecurringMember_8DBAF329F126DEADDAEE977AA5B1816A" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueMeasurementFrequencyDomain_04B8B8E8CF7263938678977AA5B17574" xlink:to="loc_us-gaap_FairValueMeasurementsRecurringMember_8DBAF329F126DEADDAEE977AA5B1816A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueMeasurementsNonrecurringMember" xlink:label="loc_us-gaap_FairValueMeasurementsNonrecurringMember_AFADF11F32D61B2DAFD9977AA5B14DAF" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueMeasurementFrequencyDomain_04B8B8E8CF7263938678977AA5B17574" xlink:to="loc_us-gaap_FairValueMeasurementsNonrecurringMember_AFADF11F32D61B2DAFD9977AA5B14DAF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_2D09AEAB1DCFD707CD5B977AA5B16228" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_F7C55E268DA62607E7DA977AA5B09936" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_2D09AEAB1DCFD707CD5B977AA5B16228" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_B1B0B7A889534B6F376D977AA5B13013" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_2D09AEAB1DCFD707CD5B977AA5B16228" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_B1B0B7A889534B6F376D977AA5B13013" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueInputsLevel1Member" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_FFBEB1898FCF7A8818F3977AA5B2A602" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_B1B0B7A889534B6F376D977AA5B13013" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_FFBEB1898FCF7A8818F3977AA5B2A602" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueInputsLevel2Member" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_EB1326631EED780989A8977AA5B23016" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_B1B0B7A889534B6F376D977AA5B13013" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_EB1326631EED780989A8977AA5B23016" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_D718C0F9C9FCE570D6C6977AA5B2BB1A" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_F7C55E268DA62607E7DA977AA5B09936" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_D718C0F9C9FCE570D6C6977AA5B2BB1A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_MarketableSecurities" xlink:label="loc_us-gaap_MarketableSecurities_BAD8FD2615989B86474D977AA5B2DB78" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_D718C0F9C9FCE570D6C6977AA5B2BB1A" xlink:to="loc_us-gaap_MarketableSecurities_BAD8FD2615989B86474D977AA5B2DB78" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TradingSecurities" xlink:label="loc_us-gaap_TradingSecurities_E54F189509E7A8F8BD0A977AA5B38FFB" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_D718C0F9C9FCE570D6C6977AA5B2BB1A" xlink:to="loc_us-gaap_TradingSecurities_E54F189509E7A8F8BD0A977AA5B38FFB" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DerivativeAssetsLiabilitiesAtFairValueNet" xlink:label="loc_us-gaap_DerivativeAssetsLiabilitiesAtFairValueNet_9033B29A67280A58BF7F977AA5B34BF7" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_D718C0F9C9FCE570D6C6977AA5B2BB1A" xlink:to="loc_us-gaap_DerivativeAssetsLiabilitiesAtFairValueNet_9033B29A67280A58BF7F977AA5B34BF7" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/FairValueOfFinancialInstrumentsDetails2" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueDisclosuresAbstract" xlink:label="loc_us-gaap_FairValueDisclosuresAbstract_8B03F9F969C89D81BE2B977AA5A8D896" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueByBalanceSheetGroupingTable" xlink:label="loc_us-gaap_FairValueByBalanceSheetGroupingTable_739B910D38C3597767B4977AA5A80192" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueDisclosuresAbstract_8B03F9F969C89D81BE2B977AA5A8D896" xlink:to="loc_us-gaap_FairValueByBalanceSheetGroupingTable_739B910D38C3597767B4977AA5A80192" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_9BAE6906FEE3ADA84030977AA5A92CDF" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_739B910D38C3597767B4977AA5A80192" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_9BAE6906FEE3ADA84030977AA5A92CDF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_71BB4AC4306AD2B7FD2A977AA5A90F58" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_9BAE6906FEE3ADA84030977AA5A92CDF" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_71BB4AC4306AD2B7FD2A977AA5A90F58" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ForeignExchangeForwardMember" xlink:label="loc_us-gaap_ForeignExchangeForwardMember_47A3742C0DFE066469D6977AA5A9E1A1" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_71BB4AC4306AD2B7FD2A977AA5A90F58" xlink:to="loc_us-gaap_ForeignExchangeForwardMember_47A3742C0DFE066469D6977AA5A9E1A1" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_CopperMember" xlink:label="loc_noc_CopperMember_108C26D06604DE63B1DA977AA5AA64B9" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_71BB4AC4306AD2B7FD2A977AA5A90F58" xlink:to="loc_noc_CopperMember_108C26D06604DE63B1DA977AA5AA64B9" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_ZincMember" xlink:label="loc_noc_ZincMember_6B8955F67295706A31B6977AA5AA6505" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_71BB4AC4306AD2B7FD2A977AA5A90F58" xlink:to="loc_noc_ZincMember_6B8955F67295706A31B6977AA5AA6505" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_EC0210E66AF5F9FE3D47977AA5AA32C5" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_739B910D38C3597767B4977AA5A80192" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_EC0210E66AF5F9FE3D47977AA5AA32C5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_HedgingRelationshipDomain" xlink:label="loc_us-gaap_HedgingRelationshipDomain_D3A69E50BABA4F4676BF977AA5AA143F" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_EC0210E66AF5F9FE3D47977AA5AA32C5" xlink:to="loc_us-gaap_HedgingRelationshipDomain_D3A69E50BABA4F4676BF977AA5AA143F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CashFlowHedgingMember" xlink:label="loc_us-gaap_CashFlowHedgingMember_8B7191612F8661F71268977AA5ABFFFD" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_HedgingRelationshipDomain_D3A69E50BABA4F4676BF977AA5AA143F" xlink:to="loc_us-gaap_CashFlowHedgingMember_8B7191612F8661F71268977AA5ABFFFD" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems" xlink:label="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_C8753764FD63EA7F5F2C977AA5ABB705" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_739B910D38C3597767B4977AA5A80192" xlink:to="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_C8753764FD63EA7F5F2C977AA5ABB705" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DerivativeNonmonetaryNotionalAmountMass" xlink:label="loc_us-gaap_DerivativeNonmonetaryNotionalAmountMass_FA0C264F41D17A330481977AA5ABCFF5" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_C8753764FD63EA7F5F2C977AA5ABB705" xlink:to="loc_us-gaap_DerivativeNonmonetaryNotionalAmountMass_FA0C264F41D17A330481977AA5ABCFF5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract" xlink:label="loc_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract_DB33FDC7C92F2DE96F40977AA5ABD9B3" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_C8753764FD63EA7F5F2C977AA5ABB705" xlink:to="loc_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract_DB33FDC7C92F2DE96F40977AA5ABD9B3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.sec.gov/invest/2013/invest-2013-01-31.xsd#invest_DerivativeNotionalAmount" xlink:label="loc_invest_DerivativeNotionalAmount_46DFE4DFC0BBAF7C8888977AA5AB0D71" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract_DB33FDC7C92F2DE96F40977AA5ABD9B3" xlink:to="loc_invest_DerivativeNotionalAmount_46DFE4DFC0BBAF7C8888977AA5AB0D71" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/FairValueOfFinancialInstrumentsTables" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueDisclosuresAbstract" xlink:label="loc_us-gaap_FairValueDisclosuresAbstract_2C763AA92DDA74D26A17977AA5C452EB" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock_5DD815519C508C4F6036977AA5C45584" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueDisclosuresAbstract_2C763AA92DDA74D26A17977AA5C452EB" xlink:to="loc_us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock_5DD815519C508C4F6036977AA5C45584" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/GoodwillAndOtherPurchasedIntangibleAssets" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract" xlink:label="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_02F75F24A9611404F70D977AA5FB3875" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock" xlink:label="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock_EE48C42B9EF06858F173977AA5FC2B4A" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_02F75F24A9611404F70D977AA5FB3875" xlink:to="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock_EE48C42B9EF06858F173977AA5FC2B4A" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/GoodwillAndOtherPurchasedIntangibleAssetsDetails1" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract" xlink:label="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_1A90CEEB0DA4C63D96D39A412389A7B1" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfGoodwillTable" xlink:label="loc_us-gaap_ScheduleOfGoodwillTable_D38EFEAAC02547174B0D9A412389A92F" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_1A90CEEB0DA4C63D96D39A412389A7B1" xlink:to="loc_us-gaap_ScheduleOfGoodwillTable_D38EFEAAC02547174B0D9A412389A92F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_A486BAF3404F3799E2509A41238990F7" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_D38EFEAAC02547174B0D9A412389A92F" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_A486BAF3404F3799E2509A41238990F7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_FB6E64393A829A7B24FF9A4123892BB6" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_A486BAF3404F3799E2509A41238990F7" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_FB6E64393A829A7B24FF9A4123892BB6" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_OrbitalATKMember" xlink:label="loc_noc_OrbitalATKMember_3DEF570F27BBA62CC0189A4123890983" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_FB6E64393A829A7B24FF9A4123892BB6" xlink:to="loc_noc_OrbitalATKMember_3DEF570F27BBA62CC0189A4123890983" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_5974828E98ED5369D1FF9A4123893237" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_D38EFEAAC02547174B0D9A412389A92F" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_5974828E98ED5369D1FF9A4123893237" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_C5DDED0A6DCDCBB462C59A4123899E66" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_5974828E98ED5369D1FF9A4123893237" xlink:to="loc_us-gaap_SegmentDomain_C5DDED0A6DCDCBB462C59A4123899E66" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_AerospaceSystemsMember" xlink:label="loc_noc_AerospaceSystemsMember_B2BE92C156B92423F26D9A412389ABDD" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentDomain_C5DDED0A6DCDCBB462C59A4123899E66" xlink:to="loc_noc_AerospaceSystemsMember_B2BE92C156B92423F26D9A412389ABDD" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_InnovationSystemsMember" xlink:label="loc_noc_InnovationSystemsMember_AA48254B4058D84C8BD79A4123899EC2" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentDomain_C5DDED0A6DCDCBB462C59A4123899E66" xlink:to="loc_noc_InnovationSystemsMember_AA48254B4058D84C8BD79A4123899EC2" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_MissionSystemsMember" xlink:label="loc_noc_MissionSystemsMember_A7559E4B535165AB9B5A9A4123895307" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentDomain_C5DDED0A6DCDCBB462C59A4123899E66" xlink:to="loc_noc_MissionSystemsMember_A7559E4B535165AB9B5A9A4123895307" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_TechnologyServicesMember" xlink:label="loc_noc_TechnologyServicesMember_4AA7D7022F176C1FE7929A412389DE09" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentDomain_C5DDED0A6DCDCBB462C59A4123899E66" xlink:to="loc_noc_TechnologyServicesMember_4AA7D7022F176C1FE7929A412389DE09" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GoodwillLineItems" xlink:label="loc_us-gaap_GoodwillLineItems_C2AC3D0416340F894CA89A4123898963" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_D38EFEAAC02547174B0D9A412389A92F" xlink:to="loc_us-gaap_GoodwillLineItems_C2AC3D0416340F894CA89A4123898963" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GoodwillRollForward" xlink:label="loc_us-gaap_GoodwillRollForward_CEB031FA015B4B74C3BA9A4123893799" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillLineItems_C2AC3D0416340F894CA89A4123898963" xlink:to="loc_us-gaap_GoodwillRollForward_CEB031FA015B4B74C3BA9A4123893799" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Goodwill" xlink:label="loc_us-gaap_Goodwill_89096107C6D600C842289A4123898729" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillRollForward_CEB031FA015B4B74C3BA9A4123893799" xlink:to="loc_us-gaap_Goodwill_89096107C6D600C842289A4123898729" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GoodwillAcquiredDuringPeriod" xlink:label="loc_us-gaap_GoodwillAcquiredDuringPeriod_DF181EDE59A708065EA29A4123897DA1" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillRollForward_CEB031FA015B4B74C3BA9A4123893799" xlink:to="loc_us-gaap_GoodwillAcquiredDuringPeriod_DF181EDE59A708065EA29A4123897DA1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GoodwillPeriodIncreaseDecrease" xlink:label="loc_us-gaap_GoodwillPeriodIncreaseDecrease_B59C35CA54519B9A20949A412389E8AC" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillRollForward_CEB031FA015B4B74C3BA9A4123893799" xlink:to="loc_us-gaap_GoodwillPeriodIncreaseDecrease_B59C35CA54519B9A20949A412389E8AC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Goodwill" xlink:label="loc_us-gaap_Goodwill_E4B07854618D8D97D8E89A4123899510" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillRollForward_CEB031FA015B4B74C3BA9A4123893799" xlink:to="loc_us-gaap_Goodwill_E4B07854618D8D97D8E89A4123899510" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/GoodwillAndOtherPurchasedIntangibleAssetsDetails2" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract" xlink:label="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_7BC059FB5E164FEB3764977AA5EA0C4A" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable" xlink:label="loc_us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable_6A13108B4443D567A30E977AA5EABDCE" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_7BC059FB5E164FEB3764977AA5EA0C4A" xlink:to="loc_us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable_6A13108B4443D567A30E977AA5EABDCE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_784531741DA5C41E072E977AA5EA461E" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable_6A13108B4443D567A30E977AA5EABDCE" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_784531741DA5C41E072E977AA5EA461E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_4543B615131CDA5D6166977AA5EBBAD9" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_784531741DA5C41E072E977AA5EA461E" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_4543B615131CDA5D6166977AA5EBBAD9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems" xlink:label="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_8FB2CB407380D3271598977AA5EBA5ED" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable_6A13108B4443D567A30E977AA5EABDCE" xlink:to="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_8FB2CB407380D3271598977AA5EBA5ED" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsGross" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_69224D4455B6CAF24C37977AA5EBE83C" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_7BC059FB5E164FEB3764977AA5EA0C4A" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_69224D4455B6CAF24C37977AA5EBE83C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_A09A7152A8A3374C0E35977AA5EB5862" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_7BC059FB5E164FEB3764977AA5EA0C4A" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_A09A7152A8A3374C0E35977AA5EB5862" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsNet" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_F0E02D183538DBB0A893977AA5ECD606" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_7BC059FB5E164FEB3764977AA5EA0C4A" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsNet_F0E02D183538DBB0A893977AA5ECD606" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/GoodwillAndOtherPurchasedIntangibleAssetsDetails3" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract" xlink:label="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_B870E73D732C65593C10977AA5E5389A" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_A149C1A5937855F64EBB977AA5E649EE" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_B870E73D732C65593C10977AA5E5389A" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_A149C1A5937855F64EBB977AA5E649EE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_3D14D31ACF6FD5F0AB2F977AA5E62C66" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_B870E73D732C65593C10977AA5E5389A" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_3D14D31ACF6FD5F0AB2F977AA5E62C66" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_32706B062FBC904A7005977AA5E6F56F" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_B870E73D732C65593C10977AA5E5389A" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_32706B062FBC904A7005977AA5E6F56F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_B460755B856E4FC33C0A977AA5E616D7" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_B870E73D732C65593C10977AA5E5389A" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_B460755B856E4FC33C0A977AA5E616D7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_334C54F66D0AB2B62BB8977AA5E6B662" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_B870E73D732C65593C10977AA5E5389A" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_334C54F66D0AB2B62BB8977AA5E6B662" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/GoodwillAndOtherPurchasedIntangibleAssetsGoodwillAndOtherPurchasedIntangibleAssetsDetails4" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract" xlink:label="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_3B46D35157C35E7B22D29A4529FB834E" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfGoodwillTable" xlink:label="loc_us-gaap_ScheduleOfGoodwillTable_45C183316C2A11C5D45B9A4529FB6696" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_3B46D35157C35E7B22D29A4529FB834E" xlink:to="loc_us-gaap_ScheduleOfGoodwillTable_45C183316C2A11C5D45B9A4529FB6696" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_E497D461B77AD4D5E7409A4529FBAC46" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_45C183316C2A11C5D45B9A4529FB6696" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_E497D461B77AD4D5E7409A4529FBAC46" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_077CEA5E2BD4F9F229AE9A4529FB48A6" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_E497D461B77AD4D5E7409A4529FBAC46" xlink:to="loc_us-gaap_SegmentDomain_077CEA5E2BD4F9F229AE9A4529FB48A6" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_AerospaceSystemsMember" xlink:label="loc_noc_AerospaceSystemsMember_191FB4171BD8BE7269E49A4529FB50F2" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentDomain_077CEA5E2BD4F9F229AE9A4529FB48A6" xlink:to="loc_noc_AerospaceSystemsMember_191FB4171BD8BE7269E49A4529FB50F2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GoodwillLineItems" xlink:label="loc_us-gaap_GoodwillLineItems_E928B946BD444544FE0E9A4529FB08EE" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_45C183316C2A11C5D45B9A4529FB6696" xlink:to="loc_us-gaap_GoodwillLineItems_E928B946BD444544FE0E9A4529FB08EE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GoodwillImpairedAccumulatedImpairmentLoss" xlink:label="loc_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_3D52A7797003E690560B9A4529FB1F22" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillLineItems_E928B946BD444544FE0E9A4529FB08EE" xlink:to="loc_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_3D52A7797003E690560B9A4529FB1F22" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AmortizationOfIntangibleAssets" xlink:label="loc_us-gaap_AmortizationOfIntangibleAssets_7FF3B5AFF69F878786289A4529FBA227" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_3B46D35157C35E7B22D29A4529FB834E" xlink:to="loc_us-gaap_AmortizationOfIntangibleAssets_7FF3B5AFF69F878786289A4529FBA227" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife" xlink:label="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_E2D652909BA8B37573019A4529FB2445" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_3B46D35157C35E7B22D29A4529FB834E" xlink:to="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_E2D652909BA8B37573019A4529FB2445" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/GoodwillAndOtherPurchasedIntangibleAssetsTables" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract" xlink:label="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_7695C3EE17A4B38AA746977AA5F81D87" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfGoodwillTextBlock" xlink:label="loc_us-gaap_ScheduleOfGoodwillTextBlock_FD37941D4BC091D2B214977AA5F89D3E" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_7695C3EE17A4B38AA746977AA5F81D87" xlink:to="loc_us-gaap_ScheduleOfGoodwillTextBlock_FD37941D4BC091D2B214977AA5F89D3E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetsByMajorClassTextBlock" xlink:label="loc_us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetsByMajorClassTextBlock_5AEBB94D1343776EA93F977AA5F9899E" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_7695C3EE17A4B38AA746977AA5F81D87" xlink:to="loc_us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetsByMajorClassTextBlock_5AEBB94D1343776EA93F977AA5F9899E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock" xlink:label="loc_us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock_7EBEBEE4EF6719F5DBF9977AA5F9A84E" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_7695C3EE17A4B38AA746977AA5F81D87" xlink:to="loc_us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock_7EBEBEE4EF6719F5DBF9977AA5F9A84E" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/IncomeTaxes" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxDisclosureAbstract" xlink:label="loc_us-gaap_IncomeTaxDisclosureAbstract_795325405F94A25F067A977AA63C32C0" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxDisclosureTextBlock" xlink:label="loc_us-gaap_IncomeTaxDisclosureTextBlock_4C7C474E2876CDABCC29977AA63C2D8F" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxDisclosureAbstract_795325405F94A25F067A977AA63C32C0" xlink:to="loc_us-gaap_IncomeTaxDisclosureTextBlock_4C7C474E2876CDABCC29977AA63C2D8F" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/IncomeTaxesDetails1" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxDisclosureAbstract" xlink:label="loc_us-gaap_IncomeTaxDisclosureAbstract_C01ECE77525E851A9AEE977AA633985F" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ComponentsOfIncomeTaxExpenseBenefitContinuingOperationsAbstract" xlink:label="loc_us-gaap_ComponentsOfIncomeTaxExpenseBenefitContinuingOperationsAbstract_9362015C7A8D036A561B977AA634CE14" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxDisclosureAbstract_C01ECE77525E851A9AEE977AA633985F" xlink:to="loc_us-gaap_ComponentsOfIncomeTaxExpenseBenefitContinuingOperationsAbstract_9362015C7A8D036A561B977AA634CE14" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxExpenseBenefitContinuingOperationsAbstract" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefitContinuingOperationsAbstract_68B56DF7D9F5E8FD7C59977AA634A6EF" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ComponentsOfIncomeTaxExpenseBenefitContinuingOperationsAbstract_9362015C7A8D036A561B977AA634CE14" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefitContinuingOperationsAbstract_68B56DF7D9F5E8FD7C59977AA634A6EF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CurrentFederalTaxExpenseBenefit" xlink:label="loc_us-gaap_CurrentFederalTaxExpenseBenefit_8374274359961975532B977AA634C196" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefitContinuingOperationsAbstract_68B56DF7D9F5E8FD7C59977AA634A6EF" xlink:to="loc_us-gaap_CurrentFederalTaxExpenseBenefit_8374274359961975532B977AA634C196" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredFederalIncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_DeferredFederalIncomeTaxExpenseBenefit_35AFBD6432D58243AED9977AA635B624" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefitContinuingOperationsAbstract_68B56DF7D9F5E8FD7C59977AA634A6EF" xlink:to="loc_us-gaap_DeferredFederalIncomeTaxExpenseBenefit_35AFBD6432D58243AED9977AA635B624" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FederalIncomeTaxExpenseBenefitContinuingOperations" xlink:label="loc_us-gaap_FederalIncomeTaxExpenseBenefitContinuingOperations_F9CA866A4C2D753D1A25977AA63524D9" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefitContinuingOperationsAbstract_68B56DF7D9F5E8FD7C59977AA634A6EF" xlink:to="loc_us-gaap_FederalIncomeTaxExpenseBenefitContinuingOperations_F9CA866A4C2D753D1A25977AA63524D9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CurrentForeignTaxExpenseBenefit" xlink:label="loc_us-gaap_CurrentForeignTaxExpenseBenefit_5ABCA9ED493ED0CB5188977AA635CBEA" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefitContinuingOperationsAbstract_68B56DF7D9F5E8FD7C59977AA634A6EF" xlink:to="loc_us-gaap_CurrentForeignTaxExpenseBenefit_5ABCA9ED493ED0CB5188977AA635CBEA" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredForeignIncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_DeferredForeignIncomeTaxExpenseBenefit_B3092BC55EE99ECAA72D977AA6351C96" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefitContinuingOperationsAbstract_68B56DF7D9F5E8FD7C59977AA634A6EF" xlink:to="loc_us-gaap_DeferredForeignIncomeTaxExpenseBenefit_B3092BC55EE99ECAA72D977AA6351C96" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ForeignIncomeTaxExpenseBenefitContinuingOperations" xlink:label="loc_us-gaap_ForeignIncomeTaxExpenseBenefitContinuingOperations_75E8F22C6406DBC1A0C0977AA6353E6D" xlink:type="locator" />
    <link:presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefitContinuingOperationsAbstract_68B56DF7D9F5E8FD7C59977AA634A6EF" xlink:to="loc_us-gaap_ForeignIncomeTaxExpenseBenefitContinuingOperations_75E8F22C6406DBC1A0C0977AA6353E6D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_E4F9EF62EFD0DE955BBB977AA635E746" xlink:type="locator" />
    <link:presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefitContinuingOperationsAbstract_68B56DF7D9F5E8FD7C59977AA634A6EF" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_E4F9EF62EFD0DE955BBB977AA635E746" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/IncomeTaxesDetails2" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxDisclosureAbstract" xlink:label="loc_us-gaap_IncomeTaxDisclosureAbstract_C8FDAF61EC8E7DAA21A99BA905053739" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate_C4F2E75F64FD9D8C31359C13808CC54C" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxDisclosureAbstract_C8FDAF61EC8E7DAA21A99BA905053739" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate_C4F2E75F64FD9D8C31359C13808CC54C" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_EffectiveIncomeTaxRateReconciliationIncreaseinResearchTaxCredits" xlink:label="loc_noc_EffectiveIncomeTaxRateReconciliationIncreaseinResearchTaxCredits_D4AC0E72F44317EF168F9BA905065CF1" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxDisclosureAbstract_C8FDAF61EC8E7DAA21A99BA905053739" xlink:to="loc_noc_EffectiveIncomeTaxRateReconciliationIncreaseinResearchTaxCredits_D4AC0E72F44317EF168F9BA905065CF1" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_IncomeTaxReconciliationDeductionIncreaseinQualifiedProductionActivity" xlink:label="loc_noc_IncomeTaxReconciliationDeductionIncreaseinQualifiedProductionActivity_74FD853AD926CBB712E69BA9050644C6" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxDisclosureAbstract_C8FDAF61EC8E7DAA21A99BA905053739" xlink:to="loc_noc_IncomeTaxReconciliationDeductionIncreaseinQualifiedProductionActivity_74FD853AD926CBB712E69BA9050644C6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxesPaidNet" xlink:label="loc_us-gaap_IncomeTaxesPaidNet_B1F925F1AA34D4C122599BA905066599" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxDisclosureAbstract_C8FDAF61EC8E7DAA21A99BA905053739" xlink:to="loc_us-gaap_IncomeTaxesPaidNet_B1F925F1AA34D4C122599BA905066599" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract_DA97B072989A967049E99BA90506067C" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxDisclosureAbstract_C8FDAF61EC8E7DAA21A99BA905053739" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract_DA97B072989A967049E99BA90506067C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate" xlink:label="loc_us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate_949D3EACBB484AE04E469BA90506F61A" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract_DA97B072989A967049E99BA90506067C" xlink:to="loc_us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate_949D3EACBB484AE04E469BA90506F61A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxReconciliationDeductionsOther" xlink:label="loc_us-gaap_IncomeTaxReconciliationDeductionsOther_F3D6BE4C354ED2AE92319BA9050768A8" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract_DA97B072989A967049E99BA90506067C" xlink:to="loc_us-gaap_IncomeTaxReconciliationDeductionsOther_F3D6BE4C354ED2AE92319BA9050768A8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationDeductionsOther" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationDeductionsOther_0A565FB52D0CED60A51C9BA905078010" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract_DA97B072989A967049E99BA90506067C" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationDeductionsOther_0A565FB52D0CED60A51C9BA905078010" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxReconciliationTaxCreditsResearch" xlink:label="loc_us-gaap_IncomeTaxReconciliationTaxCreditsResearch_EFA1C38D02E3CA6DA0EA9BA9050D67F5" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract_DA97B072989A967049E99BA90506067C" xlink:to="loc_us-gaap_IncomeTaxReconciliationTaxCreditsResearch_EFA1C38D02E3CA6DA0EA9BA9050D67F5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsResearch" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsResearch_D846EC0D8E41C460EE379BA9050DA08C" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract_DA97B072989A967049E99BA90506067C" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsResearch_D846EC0D8E41C460EE379BA9050DA08C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxReconciliationDeductionsQualifiedProductionActivities" xlink:label="loc_us-gaap_IncomeTaxReconciliationDeductionsQualifiedProductionActivities_39F235A905FFD1F3E3809BA9050D07C9" xlink:type="locator" />
    <link:presentationArc order="6" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract_DA97B072989A967049E99BA90506067C" xlink:to="loc_us-gaap_IncomeTaxReconciliationDeductionsQualifiedProductionActivities_39F235A905FFD1F3E3809BA9050D07C9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivities" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivities_F613E2AD4A8B82ADE5829BA9050DE329" xlink:type="locator" />
    <link:presentationArc order="7" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract_DA97B072989A967049E99BA90506067C" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivities_F613E2AD4A8B82ADE5829BA9050DE329" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxReconciliationTaxSettlements" xlink:label="loc_us-gaap_IncomeTaxReconciliationTaxSettlements_D048AF74EB62EC642C579BA9050D56E9" xlink:type="locator" />
    <link:presentationArc order="8" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract_DA97B072989A967049E99BA90506067C" xlink:to="loc_us-gaap_IncomeTaxReconciliationTaxSettlements_D048AF74EB62EC642C579BA9050D56E9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationTaxSettlements" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationTaxSettlements_0D585720CFB9C02F4D6E9BA9050D8895" xlink:type="locator" />
    <link:presentationArc order="9" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract_DA97B072989A967049E99BA90506067C" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationTaxSettlements_0D585720CFB9C02F4D6E9BA9050D8895" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxReconciliationRepatriationOfForeignEarnings" xlink:label="loc_us-gaap_IncomeTaxReconciliationRepatriationOfForeignEarnings_3395F239DDA84A0370369BA9050E56DF" xlink:type="locator" />
    <link:presentationArc order="10" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract_DA97B072989A967049E99BA90506067C" xlink:to="loc_us-gaap_IncomeTaxReconciliationRepatriationOfForeignEarnings_3395F239DDA84A0370369BA9050E56DF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationRepatriationOfForeignEarnings" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationRepatriationOfForeignEarnings_F375271CEFEADB2778449BA9050EC8B0" xlink:type="locator" />
    <link:presentationArc order="11" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract_DA97B072989A967049E99BA90506067C" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationRepatriationOfForeignEarnings_F375271CEFEADB2778449BA9050EC8B0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate" xlink:label="loc_us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate_C8B1E28E0978576471DE9BA9050EECBA" xlink:type="locator" />
    <link:presentationArc order="12" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract_DA97B072989A967049E99BA90506067C" xlink:to="loc_us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate_C8B1E28E0978576471DE9BA9050EECBA" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate_4EA1F8C7EE1FBE5404759BA9050EA6E2" xlink:type="locator" />
    <link:presentationArc order="13" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract_DA97B072989A967049E99BA90506067C" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate_4EA1F8C7EE1FBE5404759BA9050EA6E2" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_EffectiveTaxRateReconciliationMarktoMarketbenefittaxratedifferentialamount" xlink:label="loc_noc_EffectiveTaxRateReconciliationMarktoMarketbenefittaxratedifferentialamount_59F91231651019ED1D889BA9050EC552" xlink:type="locator" />
    <link:presentationArc order="14" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract_DA97B072989A967049E99BA90506067C" xlink:to="loc_noc_EffectiveTaxRateReconciliationMarktoMarketbenefittaxratedifferentialamount_59F91231651019ED1D889BA9050EC552" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_EffectiveTaxRateReconciliationMarktoMarketbenefittaxratedifferentialpercent" xlink:label="loc_noc_EffectiveTaxRateReconciliationMarktoMarketbenefittaxratedifferentialpercent_FFE4A177CE756EF737AA9BA9050EAB19" xlink:type="locator" />
    <link:presentationArc order="15" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract_DA97B072989A967049E99BA90506067C" xlink:to="loc_noc_EffectiveTaxRateReconciliationMarktoMarketbenefittaxratedifferentialpercent_FFE4A177CE756EF737AA9BA9050EAB19" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxReconciliationOtherAdjustments" xlink:label="loc_us-gaap_IncomeTaxReconciliationOtherAdjustments_CDD6F74D86348122AA879BA9050FE558" xlink:type="locator" />
    <link:presentationArc order="16" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract_DA97B072989A967049E99BA90506067C" xlink:to="loc_us-gaap_IncomeTaxReconciliationOtherAdjustments_CDD6F74D86348122AA879BA9050FE558" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments_988A11096BA35379987B9BA9050FA0EA" xlink:type="locator" />
    <link:presentationArc order="17" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract_DA97B072989A967049E99BA90506067C" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments_988A11096BA35379987B9BA9050FA0EA" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_3AFA05D8C04C4D581BF09BA9050FC30A" xlink:type="locator" />
    <link:presentationArc order="18" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract_DA97B072989A967049E99BA90506067C" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_3AFA05D8C04C4D581BF09BA9050FC30A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EffectiveIncomeTaxRateContinuingOperations" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_52ECAE4A9B1C7556411F9BA9050FE85A" xlink:type="locator" />
    <link:presentationArc order="19" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract_DA97B072989A967049E99BA90506067C" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_52ECAE4A9B1C7556411F9BA9050FE85A" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/IncomeTaxesDetails3" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxDisclosureAbstract" xlink:label="loc_us-gaap_IncomeTaxDisclosureAbstract_D39347BCCBD67B4B55BC977AA62007AD" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward" xlink:label="loc_us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward_C10DD0E0B40C200E1DE3977AA6204F54" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxDisclosureAbstract_D39347BCCBD67B4B55BC977AA62007AD" xlink:to="loc_us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward_C10DD0E0B40C200E1DE3977AA6204F54" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_UnrecognizedTaxBenefits" xlink:label="loc_us-gaap_UnrecognizedTaxBenefits_AEE1B3F61399F62A8F91977AA6214BBD" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward_C10DD0E0B40C200E1DE3977AA6204F54" xlink:to="loc_us-gaap_UnrecognizedTaxBenefits_AEE1B3F61399F62A8F91977AA6214BBD" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions_30770FA6BE97706DA33F977AA6218663" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward_C10DD0E0B40C200E1DE3977AA6204F54" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions_30770FA6BE97706DA33F977AA6218663" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions_B8F5A9BE5DA584AE6FCF977AA62182A2" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward_C10DD0E0B40C200E1DE3977AA6204F54" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions_B8F5A9BE5DA584AE6FCF977AA62182A2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions_E06FF13E92FFE2579A1B977AA621282E" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward_C10DD0E0B40C200E1DE3977AA6204F54" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions_E06FF13E92FFE2579A1B977AA621282E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities_44F38F0864CEBD7075E0977AA6217593" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward_C10DD0E0B40C200E1DE3977AA6204F54" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities_44F38F0864CEBD7075E0977AA6217593" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_UnrecognizedTaxBenefitsOther" xlink:label="loc_noc_UnrecognizedTaxBenefitsOther_BB4040DA602AF67E23C7977AA6228213" xlink:type="locator" />
    <link:presentationArc order="6" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward_C10DD0E0B40C200E1DE3977AA6204F54" xlink:to="loc_noc_UnrecognizedTaxBenefitsOther_BB4040DA602AF67E23C7977AA6228213" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsPeriodIncreaseDecrease" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsPeriodIncreaseDecrease_3837DB234CDC6E79FF15977AA6223231" xlink:type="locator" />
    <link:presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward_C10DD0E0B40C200E1DE3977AA6204F54" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsPeriodIncreaseDecrease_3837DB234CDC6E79FF15977AA6223231" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_UnrecognizedTaxBenefits" xlink:label="loc_us-gaap_UnrecognizedTaxBenefits_FCDABF551AE0D0291430977AA6229112" xlink:type="locator" />
    <link:presentationArc order="8" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward_C10DD0E0B40C200E1DE3977AA6204F54" xlink:to="loc_us-gaap_UnrecognizedTaxBenefits_FCDABF551AE0D0291430977AA6229112" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/IncomeTaxesDetails4" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxDisclosureAbstract" xlink:label="loc_us-gaap_IncomeTaxDisclosureAbstract_880929A5653275FDBEAF9F8E1F9DA839" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ComponentsOfDeferredTaxAssetsAndLiabilitiesAbstract" xlink:label="loc_us-gaap_ComponentsOfDeferredTaxAssetsAndLiabilitiesAbstract_96157E7427A58AC70ACC9F8E1F9DA9DD" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxDisclosureAbstract_880929A5653275FDBEAF9F8E1F9DA839" xlink:to="loc_us-gaap_ComponentsOfDeferredTaxAssetsAndLiabilitiesAbstract_96157E7427A58AC70ACC9F8E1F9DA9DD" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ComponentsOfDeferredTaxAssetsAbstract" xlink:label="loc_us-gaap_ComponentsOfDeferredTaxAssetsAbstract_9BC14D07365D02014E769F8E1F9DF050" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ComponentsOfDeferredTaxAssetsAndLiabilitiesAbstract_96157E7427A58AC70ACC9F8E1F9DA9DD" xlink:to="loc_us-gaap_ComponentsOfDeferredTaxAssetsAbstract_9BC14D07365D02014E769F8E1F9DF050" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits" xlink:label="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits_2A365F37364AF5D4C04D9F8E1F9D6221" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ComponentsOfDeferredTaxAssetsAbstract_9BC14D07365D02014E769F8E1F9DF050" xlink:to="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits_2A365F37364AF5D4C04D9F8E1F9D6221" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation" xlink:label="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation_21B77F6097A26552F0D49F8E1F9D821B" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ComponentsOfDeferredTaxAssetsAbstract_9BC14D07365D02014E769F8E1F9DF050" xlink:to="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation_21B77F6097A26552F0D49F8E1F9D821B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities" xlink:label="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities_41DC901F42F8580020829F8E1F9DE2AB" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ComponentsOfDeferredTaxAssetsAbstract_9BC14D07365D02014E769F8E1F9DF050" xlink:to="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities_41DC901F42F8580020829F8E1F9DE2AB" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredTaxAssetsInventory" xlink:label="loc_us-gaap_DeferredTaxAssetsInventory_6399C89AB63A2FD7232D9F8E1F9DF7C7" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ComponentsOfDeferredTaxAssetsAbstract_9BC14D07365D02014E769F8E1F9DF050" xlink:to="loc_us-gaap_DeferredTaxAssetsInventory_6399C89AB63A2FD7232D9F8E1F9DF7C7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost" xlink:label="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost_E7D6F871F4D18255055F9F8E1F9DECF4" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ComponentsOfDeferredTaxAssetsAbstract_9BC14D07365D02014E769F8E1F9DF050" xlink:to="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost_E7D6F871F4D18255055F9F8E1F9DECF4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredTaxAssetsTaxCreditCarryforwards" xlink:label="loc_us-gaap_DeferredTaxAssetsTaxCreditCarryforwards_D81695168D833565CFB59F8E1F9DA151" xlink:type="locator" />
    <link:presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ComponentsOfDeferredTaxAssetsAbstract_9BC14D07365D02014E769F8E1F9DF050" xlink:to="loc_us-gaap_DeferredTaxAssetsTaxCreditCarryforwards_D81695168D833565CFB59F8E1F9DA151" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredTaxAssetsOther" xlink:label="loc_us-gaap_DeferredTaxAssetsOther_4FDC13B93E0DC68D97539F8E1F9DDCEB" xlink:type="locator" />
    <link:presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ComponentsOfDeferredTaxAssetsAbstract_9BC14D07365D02014E769F8E1F9DF050" xlink:to="loc_us-gaap_DeferredTaxAssetsOther_4FDC13B93E0DC68D97539F8E1F9DDCEB" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredTaxAssetsGross" xlink:label="loc_us-gaap_DeferredTaxAssetsGross_90FB4A9AC6C3C776E5CC9F8E1F9D03C6" xlink:type="locator" />
    <link:presentationArc order="8" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ComponentsOfDeferredTaxAssetsAbstract_9BC14D07365D02014E769F8E1F9DF050" xlink:to="loc_us-gaap_DeferredTaxAssetsGross_90FB4A9AC6C3C776E5CC9F8E1F9D03C6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredTaxAssetsValuationAllowance" xlink:label="loc_us-gaap_DeferredTaxAssetsValuationAllowance_F47E2E9B301D8429110F9F8E1F9DC26D" xlink:type="locator" />
    <link:presentationArc order="9" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ComponentsOfDeferredTaxAssetsAbstract_9BC14D07365D02014E769F8E1F9DF050" xlink:to="loc_us-gaap_DeferredTaxAssetsValuationAllowance_F47E2E9B301D8429110F9F8E1F9DC26D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredTaxAssetsNet" xlink:label="loc_us-gaap_DeferredTaxAssetsNet_31B451DC71CA7E9705179F8E1F9D520D" xlink:type="locator" />
    <link:presentationArc order="10" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ComponentsOfDeferredTaxAssetsAbstract_9BC14D07365D02014E769F8E1F9DF050" xlink:to="loc_us-gaap_DeferredTaxAssetsNet_31B451DC71CA7E9705179F8E1F9D520D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ComponentsOfDeferredTaxLiabilitiesAbstract" xlink:label="loc_us-gaap_ComponentsOfDeferredTaxLiabilitiesAbstract_99D9062CED484144E1A59F8E1F9D57CD" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ComponentsOfDeferredTaxAssetsAndLiabilitiesAbstract_96157E7427A58AC70ACC9F8E1F9DA9DD" xlink:to="loc_us-gaap_ComponentsOfDeferredTaxLiabilitiesAbstract_99D9062CED484144E1A59F8E1F9D57CD" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsGoodwill" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsGoodwill_E68CEE7DC81789BFF5379F8E1F9D637A" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ComponentsOfDeferredTaxLiabilitiesAbstract_99D9062CED484144E1A59F8E1F9D57CD" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsGoodwill_E68CEE7DC81789BFF5379F8E1F9D637A" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_DeferredTaxLiabilitiesPurchaseIntangibles" xlink:label="loc_noc_DeferredTaxLiabilitiesPurchaseIntangibles_2D84C270843A92825F2D9F8E1F9D60B0" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ComponentsOfDeferredTaxLiabilitiesAbstract_99D9062CED484144E1A59F8E1F9D57CD" xlink:to="loc_noc_DeferredTaxLiabilitiesPurchaseIntangibles_2D84C270843A92825F2D9F8E1F9D60B0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment_7A39EE699256208DE2E09F8E1F9DEBC9" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ComponentsOfDeferredTaxLiabilitiesAbstract_99D9062CED484144E1A59F8E1F9D57CD" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment_7A39EE699256208DE2E09F8E1F9DEBC9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredTaxLiabilitiesTaxDeferredIncome" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesTaxDeferredIncome_B422FAD1447CE2254F389F8E1F9D03F6" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ComponentsOfDeferredTaxLiabilitiesAbstract_99D9062CED484144E1A59F8E1F9D57CD" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesTaxDeferredIncome_B422FAD1447CE2254F389F8E1F9D03F6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredTaxLiabilitiesOther" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesOther_974B761E18993BCDAD609F8E1F9D5143" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ComponentsOfDeferredTaxLiabilitiesAbstract_99D9062CED484144E1A59F8E1F9D57CD" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesOther_974B761E18993BCDAD609F8E1F9D5143" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredIncomeTaxLiabilities" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilities_36B416AE95DC737CD2289F8E1F9D9390" xlink:type="locator" />
    <link:presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ComponentsOfDeferredTaxLiabilitiesAbstract_99D9062CED484144E1A59F8E1F9D57CD" xlink:to="loc_us-gaap_DeferredIncomeTaxLiabilities_36B416AE95DC737CD2289F8E1F9D9390" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredTaxLiabilities" xlink:label="loc_us-gaap_DeferredTaxLiabilities_A3B794161B168EBF8BE69FD83CDA4EC2" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ComponentsOfDeferredTaxAssetsAndLiabilitiesAbstract_96157E7427A58AC70ACC9F8E1F9DA9DD" xlink:to="loc_us-gaap_DeferredTaxLiabilities_A3B794161B168EBF8BE69FD83CDA4EC2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredTaxAssetsLiabilitiesNet" xlink:label="loc_us-gaap_DeferredTaxAssetsLiabilitiesNet_CAEE3B8BFF473C8CB7BB9F8E1FACC4A4" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ComponentsOfDeferredTaxAssetsAndLiabilitiesAbstract_96157E7427A58AC70ACC9F8E1F9DA9DD" xlink:to="loc_us-gaap_DeferredTaxAssetsLiabilitiesNet_CAEE3B8BFF473C8CB7BB9F8E1FACC4A4" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/IncomeTaxesDetails5" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxDisclosureAbstract" xlink:label="loc_us-gaap_IncomeTaxDisclosureAbstract_C0073174CFA39B6DDCC29D5E51A71E79" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxContingencyTable" xlink:label="loc_us-gaap_IncomeTaxContingencyTable_3936CA21BE2E1B0FF3109D5E51A7CA0F" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxDisclosureAbstract_C0073174CFA39B6DDCC29D5E51A71E79" xlink:to="loc_us-gaap_IncomeTaxContingencyTable_3936CA21BE2E1B0FF3109D5E51A7CA0F" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_A2017TaxActAxis" xlink:label="loc_noc_A2017TaxActAxis_930CC209F4F43C16BF109D5E51A7C91B" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxContingencyTable_3936CA21BE2E1B0FF3109D5E51A7CA0F" xlink:to="loc_noc_A2017TaxActAxis_930CC209F4F43C16BF109D5E51A7C91B" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_A2017TaxActDomain" xlink:label="loc_noc_A2017TaxActDomain_FE2743C6D20E65AD9D019D5E51A716C4" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_noc_A2017TaxActAxis_930CC209F4F43C16BF109D5E51A7C91B" xlink:to="loc_noc_A2017TaxActDomain_FE2743C6D20E65AD9D019D5E51A716C4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ReductionInTaxesMember" xlink:label="loc_us-gaap_ReductionInTaxesMember_449F9CED1F6C011F90749D5E51A7099E" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_noc_A2017TaxActDomain_FE2743C6D20E65AD9D019D5E51A716C4" xlink:to="loc_us-gaap_ReductionInTaxesMember_449F9CED1F6C011F90749D5E51A7099E" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_UndistributedEarningssubjecttoTransitiontaxonForeignEarningsMember" xlink:label="loc_noc_UndistributedEarningssubjecttoTransitiontaxonForeignEarningsMember_77BA27CBD6613E71355A9D5E51A7922C" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_noc_A2017TaxActDomain_FE2743C6D20E65AD9D019D5E51A716C4" xlink:to="loc_noc_UndistributedEarningssubjecttoTransitiontaxonForeignEarningsMember_77BA27CBD6613E71355A9D5E51A7922C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeAxis" xlink:label="loc_srt_RangeAxis_4687501227FF3D0603F59D5E51A7ADDD" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxContingencyTable_3936CA21BE2E1B0FF3109D5E51A7CA0F" xlink:to="loc_srt_RangeAxis_4687501227FF3D0603F59D5E51A7ADDD" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeMember" xlink:label="loc_srt_RangeMember_F39441654750A8371B1A9D5E51A7E2DA" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RangeAxis_4687501227FF3D0603F59D5E51A7ADDD" xlink:to="loc_srt_RangeMember_F39441654750A8371B1A9D5E51A7E2DA" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MaximumMember" xlink:label="loc_srt_MaximumMember_FDCDC033D2B24C43D3F29D5E51A74882" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RangeMember_F39441654750A8371B1A9D5E51A7E2DA" xlink:to="loc_srt_MaximumMember_FDCDC033D2B24C43D3F29D5E51A74882" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxContingencyLineItems" xlink:label="loc_us-gaap_IncomeTaxContingencyLineItems_A4DF0CC2574A815BAE059D5E51A796BB" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxContingencyTable_3936CA21BE2E1B0FF3109D5E51A7CA0F" xlink:to="loc_us-gaap_IncomeTaxContingencyLineItems_A4DF0CC2574A815BAE059D5E51A796BB" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncreaseInUnrecognizedTaxBenefitsIsReasonablyPossible" xlink:label="loc_us-gaap_IncreaseInUnrecognizedTaxBenefitsIsReasonablyPossible_E25CC0A272605FD561489D5E51A72E21" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxContingencyLineItems_A4DF0CC2574A815BAE059D5E51A796BB" xlink:to="loc_us-gaap_IncreaseInUnrecognizedTaxBenefitsIsReasonablyPossible_E25CC0A272605FD561489D5E51A72E21" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromAcquisition" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromAcquisition_1F997657385C8E809FE39D5E51B1E369" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxContingencyLineItems_A4DF0CC2574A815BAE059D5E51A796BB" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromAcquisition_1F997657385C8E809FE39D5E51B1E369" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_UnrecognizedTaxBenefitsIncreaseresultingfrom2017TaxAct" xlink:label="loc_noc_UnrecognizedTaxBenefitsIncreaseresultingfrom2017TaxAct_9874B961C316696038B09D5E51B157E1" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxContingencyLineItems_A4DF0CC2574A815BAE059D5E51A796BB" xlink:to="loc_noc_UnrecognizedTaxBenefitsIncreaseresultingfrom2017TaxAct_9874B961C316696038B09D5E51B157E1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued_CBE57A61905ECB377C799D5E51B110F4" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxContingencyLineItems_A4DF0CC2574A815BAE059D5E51A796BB" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued_CBE57A61905ECB377C799D5E51B110F4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate_1D9E6B115080C8A8E3E49D5E51B191E9" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxContingencyLineItems_A4DF0CC2574A815BAE059D5E51A796BB" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate_1D9E6B115080C8A8E3E49D5E51B191E9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TaxCreditCarryforwardAmount" xlink:label="loc_us-gaap_TaxCreditCarryforwardAmount_54532C4516147A1AE7529D5E51B102D5" xlink:type="locator" />
    <link:presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxContingencyLineItems_A4DF0CC2574A815BAE059D5E51A796BB" xlink:to="loc_us-gaap_TaxCreditCarryforwardAmount_54532C4516147A1AE7529D5E51B102D5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLossCarryforwards" xlink:label="loc_us-gaap_OperatingLossCarryforwards_18D55F49D0C716ABDF4B9D5E51B15C5D" xlink:type="locator" />
    <link:presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxContingencyLineItems_A4DF0CC2574A815BAE059D5E51A796BB" xlink:to="loc_us-gaap_OperatingLossCarryforwards_18D55F49D0C716ABDF4B9D5E51B15C5D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TaxCreditCarryforwardValuationAllowance" xlink:label="loc_us-gaap_TaxCreditCarryforwardValuationAllowance_42689E3D4B68D7B2C4039D5E51B12B74" xlink:type="locator" />
    <link:presentationArc order="8" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxContingencyLineItems_A4DF0CC2574A815BAE059D5E51A796BB" xlink:to="loc_us-gaap_TaxCreditCarryforwardValuationAllowance_42689E3D4B68D7B2C4039D5E51B12B74" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLossCarryforwardsValuationAllowance" xlink:label="loc_us-gaap_OperatingLossCarryforwardsValuationAllowance_B06E209CC38B755217279D5E51B171ED" xlink:type="locator" />
    <link:presentationArc order="9" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxContingencyLineItems_A4DF0CC2574A815BAE059D5E51A796BB" xlink:to="loc_us-gaap_OperatingLossCarryforwardsValuationAllowance_B06E209CC38B755217279D5E51B171ED" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/IncomeTaxesDetails6" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxDisclosureAbstract" xlink:label="loc_us-gaap_IncomeTaxDisclosureAbstract_826460543034FFBFDED79D5DEE8C336E" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxContingencyTable" xlink:label="loc_us-gaap_IncomeTaxContingencyTable_5F0D50BDE10DC96D45D59D5DEE8C8D3C" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxDisclosureAbstract_826460543034FFBFDED79D5DEE8C336E" xlink:to="loc_us-gaap_IncomeTaxContingencyTable_5F0D50BDE10DC96D45D59D5DEE8C8D3C" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_A2017TaxActAxis" xlink:label="loc_noc_A2017TaxActAxis_E3A10D45C206E878C2A19D5DEE8CE32F" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxContingencyTable_5F0D50BDE10DC96D45D59D5DEE8C8D3C" xlink:to="loc_noc_A2017TaxActAxis_E3A10D45C206E878C2A19D5DEE8CE32F" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_A2017TaxActDomain" xlink:label="loc_noc_A2017TaxActDomain_7E3EF7DC17E9B49AD3889D5DEE8C00D3" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_noc_A2017TaxActAxis_E3A10D45C206E878C2A19D5DEE8CE32F" xlink:to="loc_noc_A2017TaxActDomain_7E3EF7DC17E9B49AD3889D5DEE8C00D3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ReductionInTaxesMember" xlink:label="loc_us-gaap_ReductionInTaxesMember_03CF158C5264866B25D79D5DEE8C014E" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_noc_A2017TaxActDomain_7E3EF7DC17E9B49AD3889D5DEE8C00D3" xlink:to="loc_us-gaap_ReductionInTaxesMember_03CF158C5264866B25D79D5DEE8C014E" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_UndistributedEarningssubjecttoTransitiontaxonForeignEarningsMember" xlink:label="loc_noc_UndistributedEarningssubjecttoTransitiontaxonForeignEarningsMember_9E5A3E2E672C6A2015929D5DEE8C5EB2" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_noc_A2017TaxActDomain_7E3EF7DC17E9B49AD3889D5DEE8C00D3" xlink:to="loc_noc_UndistributedEarningssubjecttoTransitiontaxonForeignEarningsMember_9E5A3E2E672C6A2015929D5DEE8C5EB2" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_AcceleratedDepreciationMember" xlink:label="loc_noc_AcceleratedDepreciationMember_31CBE2C8403AEC82678A9D5DEE8CB14C" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_noc_A2017TaxActDomain_7E3EF7DC17E9B49AD3889D5DEE8C00D3" xlink:to="loc_noc_AcceleratedDepreciationMember_31CBE2C8403AEC82678A9D5DEE8CB14C" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_A2017TaxActOtherDomain" xlink:label="loc_noc_A2017TaxActOtherDomain_1C8CE776F7458F8D18F39D5DEE8CFBD3" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_noc_A2017TaxActDomain_7E3EF7DC17E9B49AD3889D5DEE8C00D3" xlink:to="loc_noc_A2017TaxActOtherDomain_1C8CE776F7458F8D18F39D5DEE8CFBD3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxContingencyLineItems" xlink:label="loc_us-gaap_IncomeTaxContingencyLineItems_EA4F50BA15FBE02A308B9D5DEE8C5ADC" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxContingencyTable_5F0D50BDE10DC96D45D59D5DEE8C8D3C" xlink:to="loc_us-gaap_IncomeTaxContingencyLineItems_EA4F50BA15FBE02A308B9D5DEE8C5ADC" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_EffectiveIncomeTaxReconciliationchangeinenactedtaxratedueto2017TaxActamount" xlink:label="loc_noc_EffectiveIncomeTaxReconciliationchangeinenactedtaxratedueto2017TaxActamount_C9B53A70B4D1EFFED4D79D5DEE8C9366" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxContingencyLineItems_EA4F50BA15FBE02A308B9D5DEE8C5ADC" xlink:to="loc_noc_EffectiveIncomeTaxReconciliationchangeinenactedtaxratedueto2017TaxActamount_C9B53A70B4D1EFFED4D79D5DEE8C9366" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate_068635A2CA269C5256E09D5DEE96C0E3" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxContingencyLineItems_EA4F50BA15FBE02A308B9D5DEE8C5ADC" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate_068635A2CA269C5256E09D5DEE96C0E3" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_EffectiveIncomeTaxReconciliationchangeinenactedtaxratedueto2017TaxActpercent" xlink:label="loc_noc_EffectiveIncomeTaxReconciliationchangeinenactedtaxratedueto2017TaxActpercent_DD77B6845C764CDF5A7F9D5DEE960D0A" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxContingencyLineItems_EA4F50BA15FBE02A308B9D5DEE8C5ADC" xlink:to="loc_noc_EffectiveIncomeTaxReconciliationchangeinenactedtaxratedueto2017TaxActpercent_DD77B6845C764CDF5A7F9D5DEE960D0A" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_ChangeinDeferredTaxAssetsdueto2017TaxAct" xlink:label="loc_noc_ChangeinDeferredTaxAssetsdueto2017TaxAct_9E6745736165736ADE9B9D5DEE96BD68" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxContingencyLineItems_EA4F50BA15FBE02A308B9D5DEE8C5ADC" xlink:to="loc_noc_ChangeinDeferredTaxAssetsdueto2017TaxAct_9E6745736165736ADE9B9D5DEE96BD68" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_ChangeinOtherCurrentLiabilitiesdueto2017TaxAct" xlink:label="loc_noc_ChangeinOtherCurrentLiabilitiesdueto2017TaxAct_98E753090C6D57F1C0AD9D5DEE96BFEF" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxContingencyLineItems_EA4F50BA15FBE02A308B9D5DEE8C5ADC" xlink:to="loc_noc_ChangeinOtherCurrentLiabilitiesdueto2017TaxAct_98E753090C6D57F1C0AD9D5DEE96BFEF" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/IncomeTaxesTables" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxDisclosureAbstract" xlink:label="loc_us-gaap_IncomeTaxDisclosureAbstract_E7B2A9ECA554E52A1127977AA6392E26" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock_431002F0B205EFE6EDDA977AA639276D" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxDisclosureAbstract_E7B2A9ECA554E52A1127977AA6392E26" xlink:to="loc_us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock_431002F0B205EFE6EDDA977AA639276D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock_50A952A618326AC3FB25977AA6397FE5" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxDisclosureAbstract_E7B2A9ECA554E52A1127977AA6392E26" xlink:to="loc_us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock_50A952A618326AC3FB25977AA6397FE5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfUnrecognizedTaxBenefitsRollForwardTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfUnrecognizedTaxBenefitsRollForwardTableTextBlock_B8FC51B2C550984D1F38977AA639958C" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxDisclosureAbstract_E7B2A9ECA554E52A1127977AA6392E26" xlink:to="loc_us-gaap_ScheduleOfUnrecognizedTaxBenefitsRollForwardTableTextBlock_B8FC51B2C550984D1F38977AA639958C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock_57123903BCFB1C727BA3977AA63A9B59" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxDisclosureAbstract_E7B2A9ECA554E52A1127977AA6392E26" xlink:to="loc_us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock_57123903BCFB1C727BA3977AA63A9B59" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/InventoriedCostsNet" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InventoryDisclosureAbstract" xlink:label="loc_us-gaap_InventoryDisclosureAbstract_25F33FC0EEA5959A8E32977AA647CB32" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InventoryDisclosureTextBlock" xlink:label="loc_us-gaap_InventoryDisclosureTextBlock_97F12B325A14022CE3F0977AA6474517" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_InventoryDisclosureAbstract_25F33FC0EEA5959A8E32977AA647CB32" xlink:to="loc_us-gaap_InventoryDisclosureTextBlock_97F12B325A14022CE3F0977AA6474517" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/InventoriedCostsNetDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InventoryDisclosureAbstract" xlink:label="loc_us-gaap_InventoryDisclosureAbstract_AC6633B5B974D39F4B12977AA6404678" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InventoryWorkInProcessNetOfReserves" xlink:label="loc_us-gaap_InventoryWorkInProcessNetOfReserves_AF8F9819E2DAA939DD74977AA6415C17" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_InventoryDisclosureAbstract_AC6633B5B974D39F4B12977AA6404678" xlink:to="loc_us-gaap_InventoryWorkInProcessNetOfReserves_AF8F9819E2DAA939DD74977AA6415C17" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InventoryForLongTermContractsOrProgramsGeneralAndAdministrativeCostsIncludedInInventory" xlink:label="loc_us-gaap_InventoryForLongTermContractsOrProgramsGeneralAndAdministrativeCostsIncludedInInventory_9E55A5795E244C9EA402977AA64157C4" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_InventoryDisclosureAbstract_AC6633B5B974D39F4B12977AA6404678" xlink:to="loc_us-gaap_InventoryForLongTermContractsOrProgramsGeneralAndAdministrativeCostsIncludedInInventory_9E55A5795E244C9EA402977AA64157C4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InventoryFinishedGoodsAndWorkInProcessNetOfReserves" xlink:label="loc_us-gaap_InventoryFinishedGoodsAndWorkInProcessNetOfReserves_00CBAE79DCD89DADEFF1977AA6414FD8" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_InventoryDisclosureAbstract_AC6633B5B974D39F4B12977AA6404678" xlink:to="loc_us-gaap_InventoryFinishedGoodsAndWorkInProcessNetOfReserves_00CBAE79DCD89DADEFF1977AA6414FD8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProgressPaymentsNettedAgainstInventoryForLongTermContractsOrPrograms" xlink:label="loc_us-gaap_ProgressPaymentsNettedAgainstInventoryForLongTermContractsOrPrograms_A4CB1A228EC52EBAB9A3977AA641ACE9" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_InventoryDisclosureAbstract_AC6633B5B974D39F4B12977AA6404678" xlink:to="loc_us-gaap_ProgressPaymentsNettedAgainstInventoryForLongTermContractsOrPrograms_A4CB1A228EC52EBAB9A3977AA641ACE9" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_InventoriedCostsNetOfProgressPayments" xlink:label="loc_noc_InventoriedCostsNetOfProgressPayments_B8DA220D97D8724D483C977AA642495C" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_InventoryDisclosureAbstract_AC6633B5B974D39F4B12977AA6404678" xlink:to="loc_noc_InventoriedCostsNetOfProgressPayments_B8DA220D97D8724D483C977AA642495C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherInventoryNetOfReserves" xlink:label="loc_us-gaap_OtherInventoryNetOfReserves_B4451E0ED5652090C9B9977AA64204D9" xlink:type="locator" />
    <link:presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_InventoryDisclosureAbstract_AC6633B5B974D39F4B12977AA6404678" xlink:to="loc_us-gaap_OtherInventoryNetOfReserves_B4451E0ED5652090C9B9977AA64204D9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InventoryNet" xlink:label="loc_us-gaap_InventoryNet_A94DD5A7235050D96745977AA6420A06" xlink:type="locator" />
    <link:presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_InventoryDisclosureAbstract_AC6633B5B974D39F4B12977AA6404678" xlink:to="loc_us-gaap_InventoryNet_A94DD5A7235050D96745977AA6420A06" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/InventoriedCostsNetTables" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InventoryDisclosureAbstract" xlink:label="loc_us-gaap_InventoryDisclosureAbstract_5E1ED3A924B6737E427E977AA64530A1" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfInventoryCurrentTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfInventoryCurrentTableTextBlock_38137C0D85C656C8101F977AA64512FD" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_InventoryDisclosureAbstract_5E1ED3A924B6737E427E977AA64530A1" xlink:to="loc_us-gaap_ScheduleOfInventoryCurrentTableTextBlock_38137C0D85C656C8101F977AA64512FD" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/InvestigationsClaimsAndLitigation" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:label="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_9E68191B5AB5799195A3977AA5661099" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LegalMattersAndContingenciesTextBlock" xlink:label="loc_us-gaap_LegalMattersAndContingenciesTextBlock_8432D4FF899AB3F1B0E4977AA5660931" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_9E68191B5AB5799195A3977AA5661099" xlink:to="loc_us-gaap_LegalMattersAndContingenciesTextBlock_8432D4FF899AB3F1B0E4977AA5660931" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/InvestigationsClaimsAndLitigationInvestigationsClaimsAndLitigationDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:label="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_AE381046A2D0E074FF089F654CEC70DA" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LossContingenciesTable" xlink:label="loc_us-gaap_LossContingenciesTable_CA990954130AADA002909F654CEC7001" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_AE381046A2D0E074FF089F654CEC70DA" xlink:to="loc_us-gaap_LossContingenciesTable_CA990954130AADA002909F654CEC7001" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeAxis" xlink:label="loc_srt_RangeAxis_D6427BE12CE29DD842769F654CED7C6A" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LossContingenciesTable_CA990954130AADA002909F654CEC7001" xlink:to="loc_srt_RangeAxis_D6427BE12CE29DD842769F654CED7C6A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeMember" xlink:label="loc_srt_RangeMember_AAD13049DFA8064147729F654CED8F64" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RangeAxis_D6427BE12CE29DD842769F654CED7C6A" xlink:to="loc_srt_RangeMember_AAD13049DFA8064147729F654CED8F64" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MaximumMember" xlink:label="loc_srt_MaximumMember_273EEAF1118ACC88D09D9F654CED1D9E" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RangeMember_AAD13049DFA8064147729F654CED8F64" xlink:to="loc_srt_MaximumMember_273EEAF1118ACC88D09D9F654CED1D9E" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_UpdatedclaimMember" xlink:label="loc_noc_UpdatedclaimMember_9BDB6B770380CA2D45829F654CEEAA4F" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RangeMember_AAD13049DFA8064147729F654CED8F64" xlink:to="loc_noc_UpdatedclaimMember_9BDB6B770380CA2D45829F654CEEAA4F" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_ClaimAmountAxis" xlink:label="loc_noc_ClaimAmountAxis_FF86FB7D2DB9EBC6F5109F654CEE1B9C" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LossContingenciesTable_CA990954130AADA002909F654CEC7001" xlink:to="loc_noc_ClaimAmountAxis_FF86FB7D2DB9EBC6F5109F654CEE1B9C" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_ClaimAmountDomain" xlink:label="loc_noc_ClaimAmountDomain_C44B83C23ADC6E0FF3169F654CEEB658" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_noc_ClaimAmountAxis_FF86FB7D2DB9EBC6F5109F654CEE1B9C" xlink:to="loc_noc_ClaimAmountDomain_C44B83C23ADC6E0FF3169F654CEEB658" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_InitialClaimMember" xlink:label="loc_noc_InitialClaimMember_2C2C285F0F9B28F1C4369F654CEF2A1D" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_noc_ClaimAmountDomain_C44B83C23ADC6E0FF3169F654CEEB658" xlink:to="loc_noc_InitialClaimMember_2C2C285F0F9B28F1C4369F654CEF2A1D" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_IncrementalclaimMember" xlink:label="loc_noc_IncrementalclaimMember_A01B2815EEBE47C115BB9F654CEF73CA" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_noc_ClaimAmountDomain_C44B83C23ADC6E0FF3169F654CEEB658" xlink:to="loc_noc_IncrementalclaimMember_A01B2815EEBE47C115BB9F654CEF73CA" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LossContingenciesByNatureOfContingencyAxis" xlink:label="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_609D2F9B5BBD482A88469F654CEFA7B9" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LossContingenciesTable_CA990954130AADA002909F654CEC7001" xlink:to="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_609D2F9B5BBD482A88469F654CEFA7B9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LossContingencyNatureDomain" xlink:label="loc_us-gaap_LossContingencyNatureDomain_8D31FABB01304F460BDB9F654CEF51BE" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_609D2F9B5BBD482A88469F654CEFA7B9" xlink:to="loc_us-gaap_LossContingencyNatureDomain_8D31FABB01304F460BDB9F654CEF51BE" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_UnitedStatesPostalServiceMember" xlink:label="loc_noc_UnitedStatesPostalServiceMember_164EC377182A7BD9ADFD9F654CF06061" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LossContingencyNatureDomain_8D31FABB01304F460BDB9F654CEF51BE" xlink:to="loc_noc_UnitedStatesPostalServiceMember_164EC377182A7BD9ADFD9F654CF06061" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_SolysticMatterMember" xlink:label="loc_noc_SolysticMatterMember_964CABAB6617668C316B9F654CF08896" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LossContingencyNatureDomain_8D31FABB01304F460BDB9F654CEF51BE" xlink:to="loc_noc_SolysticMatterMember_964CABAB6617668C316B9F654CF08896" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GainContingenciesByNatureAxis" xlink:label="loc_us-gaap_GainContingenciesByNatureAxis_7A1D8F001F86CE4479BC9F654CF1F3B3" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LossContingenciesTable_CA990954130AADA002909F654CEC7001" xlink:to="loc_us-gaap_GainContingenciesByNatureAxis_7A1D8F001F86CE4479BC9F654CF1F3B3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GainContingencyNatureDomain" xlink:label="loc_us-gaap_GainContingencyNatureDomain_B49FEB042863D125B8EB9F654CF158B2" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GainContingenciesByNatureAxis_7A1D8F001F86CE4479BC9F654CF1F3B3" xlink:to="loc_us-gaap_GainContingencyNatureDomain_B49FEB042863D125B8EB9F654CF158B2" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_UnpaidPortionsOfContractPriceAndDirectCostsIncurredMember" xlink:label="loc_noc_UnpaidPortionsOfContractPriceAndDirectCostsIncurredMember_11E6C5FB034207358B5C9F654CF178EE" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GainContingencyNatureDomain_B49FEB042863D125B8EB9F654CF158B2" xlink:to="loc_noc_UnpaidPortionsOfContractPriceAndDirectCostsIncurredMember_11E6C5FB034207358B5C9F654CF178EE" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_ActsAndOmissionsWithAdverseAffectsOnPerformanceAndObligationsMember" xlink:label="loc_noc_ActsAndOmissionsWithAdverseAffectsOnPerformanceAndObligationsMember_86B709EF161E5BF3747F9F654CF22FCE" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GainContingencyNatureDomain_B49FEB042863D125B8EB9F654CF158B2" xlink:to="loc_noc_ActsAndOmissionsWithAdverseAffectsOnPerformanceAndObligationsMember_86B709EF161E5BF3747F9F654CF22FCE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_LitigationCaseAxis" xlink:label="loc_srt_LitigationCaseAxis_327E693B485CB51B45589F654CF239D5" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LossContingenciesTable_CA990954130AADA002909F654CEC7001" xlink:to="loc_srt_LitigationCaseAxis_327E693B485CB51B45589F654CF239D5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_LitigationCaseTypeDomain" xlink:label="loc_srt_LitigationCaseTypeDomain_70B7049C09076358DB779F654CF27B2F" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_LitigationCaseAxis_327E693B485CB51B45589F654CF239D5" xlink:to="loc_srt_LitigationCaseTypeDomain_70B7049C09076358DB779F654CF27B2F" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_USGovernmentMember" xlink:label="loc_noc_USGovernmentMember_3246D32AEA000C5BC0319F654CF22D4D" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_LitigationCaseTypeDomain_70B7049C09076358DB779F654CF27B2F" xlink:to="loc_noc_USGovernmentMember_3246D32AEA000C5BC0319F654CF22D4D" xlink:type="arc" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_LitigationCaseTypeDomain_70B7049C09076358DB779F654CF27B2F" xlink:to="loc_noc_UnitedStatesPostalServiceMember_164EC377182A7BD9ADFD9F654CF06061" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_FalseClaimsActMember" xlink:label="loc_noc_FalseClaimsActMember_FE3D7AB974C125320B759F654CF38BFA" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_LitigationCaseTypeDomain_70B7049C09076358DB779F654CF27B2F" xlink:to="loc_noc_FalseClaimsActMember_FE3D7AB974C125320B759F654CF38BFA" xlink:type="arc" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_LitigationCaseTypeDomain_70B7049C09076358DB779F654CF27B2F" xlink:to="loc_noc_SolysticMatterMember_964CABAB6617668C316B9F654CF08896" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_OrbitalATKDomain" xlink:label="loc_noc_OrbitalATKDomain_663C509BB9DE4422558B9F654CF32A45" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_LitigationCaseTypeDomain_70B7049C09076358DB779F654CF27B2F" xlink:to="loc_noc_OrbitalATKDomain_663C509BB9DE4422558B9F654CF32A45" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LitigationStatusAxis" xlink:label="loc_us-gaap_LitigationStatusAxis_AA23F159E2B62C78CA7C9F654CF3C6F5" xlink:type="locator" />
    <link:presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LossContingenciesTable_CA990954130AADA002909F654CEC7001" xlink:to="loc_us-gaap_LitigationStatusAxis_AA23F159E2B62C78CA7C9F654CF3C6F5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LitigationStatusDomain" xlink:label="loc_us-gaap_LitigationStatusDomain_CDD60C0DE74A26D766679F654CF45F35" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LitigationStatusAxis_AA23F159E2B62C78CA7C9F654CF3C6F5" xlink:to="loc_us-gaap_LitigationStatusDomain_CDD60C0DE74A26D766679F654CF45F35" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ThreatenedLitigationMember" xlink:label="loc_us-gaap_ThreatenedLitigationMember_C1DF1270BFA7764BFE319F654CF4697D" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LitigationStatusDomain_CDD60C0DE74A26D766679F654CF45F35" xlink:to="loc_us-gaap_ThreatenedLitigationMember_C1DF1270BFA7764BFE319F654CF4697D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LossContingenciesLineItems" xlink:label="loc_us-gaap_LossContingenciesLineItems_3FB61F00BD543CD189959F654CF5E835" xlink:type="locator" />
    <link:presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LossContingenciesTable_CA990954130AADA002909F654CEC7001" xlink:to="loc_us-gaap_LossContingenciesLineItems_3FB61F00BD543CD189959F654CF5E835" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_ContractAward" xlink:label="loc_noc_ContractAward_0317A159D0E1BE8CCD309F654CF534BC" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LossContingenciesLineItems_3FB61F00BD543CD189959F654CF5E835" xlink:to="loc_noc_ContractAward_0317A159D0E1BE8CCD309F654CF534BC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ReceivablesLongTermContractsOrPrograms" xlink:label="loc_us-gaap_ReceivablesLongTermContractsOrPrograms_86B0785B9A3C83B808B99F654CF5634B" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LossContingenciesLineItems_3FB61F00BD543CD189959F654CF5E835" xlink:to="loc_us-gaap_ReceivablesLongTermContractsOrPrograms_86B0785B9A3C83B808B99F654CF5634B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GainContingencyUnrecordedAmount" xlink:label="loc_us-gaap_GainContingencyUnrecordedAmount_7F270CC01C16BCE606629F654CF50551" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LossContingenciesLineItems_3FB61F00BD543CD189959F654CF5E835" xlink:to="loc_us-gaap_GainContingencyUnrecordedAmount_7F270CC01C16BCE606629F654CF50551" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LossContingencyEstimateOfPossibleLoss" xlink:label="loc_us-gaap_LossContingencyEstimateOfPossibleLoss_6B9EF25EBD781DDFF16E9F654CF61B43" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LossContingenciesLineItems_3FB61F00BD543CD189959F654CF5E835" xlink:to="loc_us-gaap_LossContingencyEstimateOfPossibleLoss_6B9EF25EBD781DDFF16E9F654CF61B43" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LossContingencyNumberOfDefendants" xlink:label="loc_us-gaap_LossContingencyNumberOfDefendants_E54C8B7B4CAC60059D729F654CF6987D" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LossContingenciesLineItems_3FB61F00BD543CD189959F654CF5E835" xlink:to="loc_us-gaap_LossContingencyNumberOfDefendants_E54C8B7B4CAC60059D729F654CF6987D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LossContingencyDamagesSoughtValue" xlink:label="loc_us-gaap_LossContingencyDamagesSoughtValue_40711C97D23FCACC65B59F654CF6A635" xlink:type="locator" />
    <link:presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LossContingenciesLineItems_3FB61F00BD543CD189959F654CF5E835" xlink:to="loc_us-gaap_LossContingencyDamagesSoughtValue_40711C97D23FCACC65B59F654CF6A635" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_Counterclaim" xlink:label="loc_noc_Counterclaim_4993BD587A3592AF94E29F654CF64A58" xlink:type="locator" />
    <link:presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LossContingenciesLineItems_3FB61F00BD543CD189959F654CF5E835" xlink:to="loc_noc_Counterclaim_4993BD587A3592AF94E29F654CF64A58" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LossContingencyDamagesAwardedValue" xlink:label="loc_us-gaap_LossContingencyDamagesAwardedValue_83B64E2C2DD0B21D2DAD9F654CF64C63" xlink:type="locator" />
    <link:presentationArc order="8" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LossContingenciesLineItems_3FB61F00BD543CD189959F654CF5E835" xlink:to="loc_us-gaap_LossContingencyDamagesAwardedValue_83B64E2C2DD0B21D2DAD9F654CF64C63" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LossContingencyDamagesPaidValue" xlink:label="loc_us-gaap_LossContingencyDamagesPaidValue_9498617BB11331E0E3809F654CF70FA0" xlink:type="locator" />
    <link:presentationArc order="9" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LossContingenciesLineItems_3FB61F00BD543CD189959F654CF5E835" xlink:to="loc_us-gaap_LossContingencyDamagesPaidValue_9498617BB11331E0E3809F654CF70FA0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LossContingencySettlementAgreementTerms" xlink:label="loc_us-gaap_LossContingencySettlementAgreementTerms_AB67ED8C7D04B61990CF9F67A8D0880C" xlink:type="locator" />
    <link:presentationArc order="10" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LossContingenciesLineItems_3FB61F00BD543CD189959F654CF5E835" xlink:to="loc_us-gaap_LossContingencySettlementAgreementTerms_AB67ED8C7D04B61990CF9F67A8D0880C" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/LongTermDebt" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtDisclosureAbstract" xlink:label="loc_us-gaap_DebtDisclosureAbstract_3B7C1A2D1006C3BF155D977AA5A566B3" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtDisclosureTextBlock" xlink:label="loc_us-gaap_DebtDisclosureTextBlock_02F0D2587C29F6FDD8CD977AA5A55007" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtDisclosureAbstract_3B7C1A2D1006C3BF155D977AA5A566B3" xlink:to="loc_us-gaap_DebtDisclosureTextBlock_02F0D2587C29F6FDD8CD977AA5A55007" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/LongTermDebtDetails1" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtDisclosureAbstract" xlink:label="loc_us-gaap_DebtDisclosureAbstract_59D4193CF2A23F4D9BF49FA16EE7C6DC" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentTable" xlink:label="loc_us-gaap_DebtInstrumentTable_97ED8223E8F80975C8F29FA16EE7A6D4" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtDisclosureAbstract_59D4193CF2A23F4D9BF49FA16EE7C6DC" xlink:to="loc_us-gaap_DebtInstrumentTable_97ED8223E8F80975C8F29FA16EE7A6D4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongtermDebtTypeAxis" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_2637692340BDF882EE8D9FA16EE745AE" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentTable_97ED8223E8F80975C8F29FA16EE7A6D4" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_2637692340BDF882EE8D9FA16EE745AE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_C843DD1E7F430F12EA329FA16EE7C2F0" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_2637692340BDF882EE8D9FA16EE745AE" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_C843DD1E7F430F12EA329FA16EE7C2F0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SeniorNotesMember" xlink:label="loc_us-gaap_SeniorNotesMember_F4C7C0CAF108E15A65559FA16EE7ED25" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_C843DD1E7F430F12EA329FA16EE7C2F0" xlink:to="loc_us-gaap_SeniorNotesMember_F4C7C0CAF108E15A65559FA16EE7ED25" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeAxis" xlink:label="loc_srt_RangeAxis_C823AD0F04AB26697F059FA16EE70113" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentTable_97ED8223E8F80975C8F29FA16EE7A6D4" xlink:to="loc_srt_RangeAxis_C823AD0F04AB26697F059FA16EE70113" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeMember" xlink:label="loc_srt_RangeMember_6F26EC35507096C6CE799FA16EE735A0" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RangeAxis_C823AD0F04AB26697F059FA16EE70113" xlink:to="loc_srt_RangeMember_6F26EC35507096C6CE799FA16EE735A0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MinimumMember" xlink:label="loc_srt_MinimumMember_87D59E32CA0DDEA790AF9FA16EE74BDA" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RangeMember_6F26EC35507096C6CE799FA16EE735A0" xlink:to="loc_srt_MinimumMember_87D59E32CA0DDEA790AF9FA16EE74BDA" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MaximumMember" xlink:label="loc_srt_MaximumMember_B200181260BF9FD144759FA16EE73207" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RangeMember_6F26EC35507096C6CE799FA16EE735A0" xlink:to="loc_srt_MaximumMember_B200181260BF9FD144759FA16EE73207" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentAxis" xlink:label="loc_us-gaap_DebtInstrumentAxis_AFD2F1F57D86C751CE889FA16EE7E50D" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentTable_97ED8223E8F80975C8F29FA16EE7A6D4" xlink:to="loc_us-gaap_DebtInstrumentAxis_AFD2F1F57D86C751CE889FA16EE7E50D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_265EED62196D010D850A9FA16EE7DCA4" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentAxis_AFD2F1F57D86C751CE889FA16EE7E50D" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_265EED62196D010D850A9FA16EE7DCA4" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_TwoThousandEighteenMember" xlink:label="loc_noc_TwoThousandEighteenMember_A0E5CFE777FA15AA94A29FA16EE70533" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_265EED62196D010D850A9FA16EE7DCA4" xlink:to="loc_noc_TwoThousandEighteenMember_A0E5CFE777FA15AA94A29FA16EE70533" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_TwoThousandNineteenMember" xlink:label="loc_noc_TwoThousandNineteenMember_CFB29EE345EFDDB6E8819FA16EE71EC4" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_265EED62196D010D850A9FA16EE7DCA4" xlink:to="loc_noc_TwoThousandNineteenMember_CFB29EE345EFDDB6E8819FA16EE71EC4" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_TwoThousandTwentyMember" xlink:label="loc_noc_TwoThousandTwentyMember_0F99424245A8FA4DC09A9FA16EE713FC" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_265EED62196D010D850A9FA16EE7DCA4" xlink:to="loc_noc_TwoThousandTwentyMember_0F99424245A8FA4DC09A9FA16EE713FC" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_TwoThousandTwentyOneMember" xlink:label="loc_noc_TwoThousandTwentyOneMember_93B9494B524B3952DDCC9FA16EE792AC" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_265EED62196D010D850A9FA16EE7DCA4" xlink:to="loc_noc_TwoThousandTwentyOneMember_93B9494B524B3952DDCC9FA16EE792AC" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_TwoThousandTwentyTwoMember" xlink:label="loc_noc_TwoThousandTwentyTwoMember_33BC4EE1B223ABB0661C9FA16EE795E7" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_265EED62196D010D850A9FA16EE7DCA4" xlink:to="loc_noc_TwoThousandTwentyTwoMember_33BC4EE1B223ABB0661C9FA16EE795E7" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_TwoThousandTwentyThreeMember" xlink:label="loc_noc_TwoThousandTwentyThreeMember_20EFE5460E32D3F915909FA16EE7D2F3" xlink:type="locator" />
    <link:presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_265EED62196D010D850A9FA16EE7DCA4" xlink:to="loc_noc_TwoThousandTwentyThreeMember_20EFE5460E32D3F915909FA16EE7D2F3" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_TwoThousandTwentyFiveMember" xlink:label="loc_noc_TwoThousandTwentyFiveMember_87181E746AD82B422B169FA16EE7692D" xlink:type="locator" />
    <link:presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_265EED62196D010D850A9FA16EE7DCA4" xlink:to="loc_noc_TwoThousandTwentyFiveMember_87181E746AD82B422B169FA16EE7692D" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_TwoThousandTwentySixMember" xlink:label="loc_noc_TwoThousandTwentySixMember_7867B85688CD4D35089D9FA16EE78180" xlink:type="locator" />
    <link:presentationArc order="8" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_265EED62196D010D850A9FA16EE7DCA4" xlink:to="loc_noc_TwoThousandTwentySixMember_7867B85688CD4D35089D9FA16EE78180" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_TwoThousandTwentySevenMember" xlink:label="loc_noc_TwoThousandTwentySevenMember_02F34E745F4F7422A6639FA16EE76CE5" xlink:type="locator" />
    <link:presentationArc order="9" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_265EED62196D010D850A9FA16EE7DCA4" xlink:to="loc_noc_TwoThousandTwentySevenMember_02F34E745F4F7422A6639FA16EE76CE5" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_TwoThousandTwentyEightMember" xlink:label="loc_noc_TwoThousandTwentyEightMember_AD8DC0F3C2317E717AC99FA16EE7B65D" xlink:type="locator" />
    <link:presentationArc order="10" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_265EED62196D010D850A9FA16EE7DCA4" xlink:to="loc_noc_TwoThousandTwentyEightMember_AD8DC0F3C2317E717AC99FA16EE7B65D" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_TwoThousandThirtyOneMember" xlink:label="loc_noc_TwoThousandThirtyOneMember_D25C69716D4B38D7EDA89FA16EE79259" xlink:type="locator" />
    <link:presentationArc order="11" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_265EED62196D010D850A9FA16EE7DCA4" xlink:to="loc_noc_TwoThousandThirtyOneMember_D25C69716D4B38D7EDA89FA16EE79259" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_TwoThousandFortyMember" xlink:label="loc_noc_TwoThousandFortyMember_8FF190582ED6282DF9549FA16EE74041" xlink:type="locator" />
    <link:presentationArc order="12" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_265EED62196D010D850A9FA16EE7DCA4" xlink:to="loc_noc_TwoThousandFortyMember_8FF190582ED6282DF9549FA16EE74041" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_TwoThousandFortyThreeMember" xlink:label="loc_noc_TwoThousandFortyThreeMember_839E2AF0C7BD77CE31619FA16EE70513" xlink:type="locator" />
    <link:presentationArc order="13" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_265EED62196D010D850A9FA16EE7DCA4" xlink:to="loc_noc_TwoThousandFortyThreeMember_839E2AF0C7BD77CE31619FA16EE70513" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_TwoThousandFortyFiveMember" xlink:label="loc_noc_TwoThousandFortyFiveMember_1D2AA40441ACC6D4B0229FA16EE7F49A" xlink:type="locator" />
    <link:presentationArc order="14" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_265EED62196D010D850A9FA16EE7DCA4" xlink:to="loc_noc_TwoThousandFortyFiveMember_1D2AA40441ACC6D4B0229FA16EE7F49A" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_TwoThousandFortySevenMember" xlink:label="loc_noc_TwoThousandFortySevenMember_ED9BA7144728BD3719819FA16EE702BB" xlink:type="locator" />
    <link:presentationArc order="15" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_265EED62196D010D850A9FA16EE7DCA4" xlink:to="loc_noc_TwoThousandFortySevenMember_ED9BA7144728BD3719819FA16EE702BB" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_TwoYearTermMemberDomain" xlink:label="loc_noc_TwoYearTermMemberDomain_E112F4BD430D9E025C749FA16EE7142B" xlink:type="locator" />
    <link:presentationArc order="16" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_265EED62196D010D850A9FA16EE7DCA4" xlink:to="loc_noc_TwoYearTermMemberDomain_E112F4BD430D9E025C749FA16EE7142B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentLineItems" xlink:label="loc_us-gaap_DebtInstrumentLineItems_BE39A586ED56DA5DEACD9FA16EE7024C" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentTable_97ED8223E8F80975C8F29FA16EE7A6D4" xlink:to="loc_us-gaap_DebtInstrumentLineItems_BE39A586ED56DA5DEACD9FA16EE7024C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentsAbstract" xlink:label="loc_us-gaap_DebtInstrumentsAbstract_F19979BD58546FB989449FA16EE7F2F7" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_BE39A586ED56DA5DEACD9FA16EE7024C" xlink:to="loc_us-gaap_DebtInstrumentsAbstract_F19979BD58546FB989449FA16EE7F2F7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_7A43523E4FA3126F32089FA16EE75BA7" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentsAbstract_F19979BD58546FB989449FA16EE7F2F7" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_7A43523E4FA3126F32089FA16EE75BA7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongTermDebt" xlink:label="loc_us-gaap_LongTermDebt_566B6055B2DC576449FC9FA16EE7E203" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentsAbstract_F19979BD58546FB989449FA16EE7F2F7" xlink:to="loc_us-gaap_LongTermDebt_566B6055B2DC576449FC9FA16EE7E203" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentFaceAmount" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_5C51D0DDE587F675DB249FA16EE7D9F9" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentsAbstract_F19979BD58546FB989449FA16EE7F2F7" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_5C51D0DDE587F675DB249FA16EE7D9F9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LineOfCredit" xlink:label="loc_us-gaap_LineOfCredit_DF1A2DE749B92288DB0A9FA16EE785BF" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentsAbstract_F19979BD58546FB989449FA16EE7F2F7" xlink:to="loc_us-gaap_LineOfCredit_DF1A2DE749B92288DB0A9FA16EE785BF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherLongTermDebt" xlink:label="loc_us-gaap_OtherLongTermDebt_F9907279F971889B67F89FA16EE75313" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentsAbstract_F19979BD58546FB989449FA16EE7F2F7" xlink:to="loc_us-gaap_OtherLongTermDebt_F9907279F971889B67F89FA16EE75313" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredFinanceCostsNet" xlink:label="loc_us-gaap_DeferredFinanceCostsNet_173253D37D009D27EF2B9FA16EE77023" xlink:type="locator" />
    <link:presentationArc order="6" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentsAbstract_F19979BD58546FB989449FA16EE7F2F7" xlink:to="loc_us-gaap_DeferredFinanceCostsNet_173253D37D009D27EF2B9FA16EE77023" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtAndCapitalLeaseObligations" xlink:label="loc_us-gaap_DebtAndCapitalLeaseObligations_4413C3B090B9C2F9B9C59FA16EE7360D" xlink:type="locator" />
    <link:presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentsAbstract_F19979BD58546FB989449FA16EE7F2F7" xlink:to="loc_us-gaap_DebtAndCapitalLeaseObligations_4413C3B090B9C2F9B9C59FA16EE7360D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_5F40C8A4E5D671F606299FA16EE76772" xlink:type="locator" />
    <link:presentationArc order="8" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentsAbstract_F19979BD58546FB989449FA16EE7F2F7" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_5F40C8A4E5D671F606299FA16EE76772" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligations" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_672C6A26A542D3AD794F9FA16EE7EF0F" xlink:type="locator" />
    <link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentsAbstract_F19979BD58546FB989449FA16EE7F2F7" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_672C6A26A542D3AD794F9FA16EE7EF0F" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/LongTermDebtDetails2" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtDisclosureAbstract" xlink:label="loc_us-gaap_DebtDisclosureAbstract_135C8069B6E88D93665C977AA589DCE6" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_MaturitiesOfLongTermDebtAbstract" xlink:label="loc_us-gaap_MaturitiesOfLongTermDebtAbstract_56579B58A82085992A0A977AA58A3A25" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtDisclosureAbstract_135C8069B6E88D93665C977AA589DCE6" xlink:to="loc_us-gaap_MaturitiesOfLongTermDebtAbstract_56579B58A82085992A0A977AA58A3A25" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_0ED9FF5F6350425D2FCA977AA58A4FE8" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_MaturitiesOfLongTermDebtAbstract_56579B58A82085992A0A977AA58A3A25" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_0ED9FF5F6350425D2FCA977AA58A4FE8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_63D26FE41D944FC1B711977AA58BE049" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_MaturitiesOfLongTermDebtAbstract_56579B58A82085992A0A977AA58A3A25" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_63D26FE41D944FC1B711977AA58BE049" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_C13FE0D752DD47183434977AA58BF827" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_MaturitiesOfLongTermDebtAbstract_56579B58A82085992A0A977AA58A3A25" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_C13FE0D752DD47183434977AA58BF827" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_A7262F3A36BF66C2BF47977AA58BD8E7" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_MaturitiesOfLongTermDebtAbstract_56579B58A82085992A0A977AA58A3A25" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_A7262F3A36BF66C2BF47977AA58BD8E7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_6F62AE76133722C8FD83977AA58B6D12" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_MaturitiesOfLongTermDebtAbstract_56579B58A82085992A0A977AA58A3A25" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_6F62AE76133722C8FD83977AA58B6D12" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_8E19A9D2CB2A337C73D6977AA58BCEFD" xlink:type="locator" />
    <link:presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_MaturitiesOfLongTermDebtAbstract_56579B58A82085992A0A977AA58A3A25" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_8E19A9D2CB2A337C73D6977AA58BCEFD" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentCarryingAmount" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_92032BCB4E3E07D50002977AA58BA79B" xlink:type="locator" />
    <link:presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_MaturitiesOfLongTermDebtAbstract_56579B58A82085992A0A977AA58A3A25" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_92032BCB4E3E07D50002977AA58BA79B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentUnamortizedDiscountPremiumNet" xlink:label="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumNet_578A42F36A01ED59043E977AA58B1B9D" xlink:type="locator" />
    <link:presentationArc order="8" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_MaturitiesOfLongTermDebtAbstract_56579B58A82085992A0A977AA58A3A25" xlink:to="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumNet_578A42F36A01ED59043E977AA58B1B9D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredFinanceCostsNet" xlink:label="loc_us-gaap_DeferredFinanceCostsNet_FFC4F78352F2C360A74C977AA58C6261" xlink:type="locator" />
    <link:presentationArc order="9" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_MaturitiesOfLongTermDebtAbstract_56579B58A82085992A0A977AA58A3A25" xlink:to="loc_us-gaap_DeferredFinanceCostsNet_FFC4F78352F2C360A74C977AA58C6261" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongTermDebt" xlink:label="loc_us-gaap_LongTermDebt_B34AFCFBF59EC7384270977AA58CA736" xlink:type="locator" />
    <link:presentationArc order="10" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_MaturitiesOfLongTermDebtAbstract_56579B58A82085992A0A977AA58A3A25" xlink:to="loc_us-gaap_LongTermDebt_B34AFCFBF59EC7384270977AA58CA736" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/LongTermDebtDetails3" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtDisclosureAbstract" xlink:label="loc_us-gaap_DebtDisclosureAbstract_5B65114B4167F45E982D9D5E1C111B88" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentTable" xlink:label="loc_us-gaap_DebtInstrumentTable_A2E421AFFD2231767FF09D5E1C1BA086" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtDisclosureAbstract_5B65114B4167F45E982D9D5E1C111B88" xlink:to="loc_us-gaap_DebtInstrumentTable_A2E421AFFD2231767FF09D5E1C1BA086" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongtermDebtTypeAxis" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_EB40BCA04B166C8720A49D5E1C1BF197" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentTable_A2E421AFFD2231767FF09D5E1C1BA086" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_EB40BCA04B166C8720A49D5E1C1BF197" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_8BBE672CB3343C83CE1A9D5E1C1B4C7D" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_EB40BCA04B166C8720A49D5E1C1BF197" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_8BBE672CB3343C83CE1A9D5E1C1B4C7D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SeniorNotesMember" xlink:label="loc_us-gaap_SeniorNotesMember_9339F3665C65A0CFB19F9D5E1C1B8B73" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_8BBE672CB3343C83CE1A9D5E1C1B4C7D" xlink:to="loc_us-gaap_SeniorNotesMember_9339F3665C65A0CFB19F9D5E1C1B8B73" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_AE55B3E78BFB81FAC49E9D5E1C1B767E" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentTable_A2E421AFFD2231767FF09D5E1C1BA086" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_AE55B3E78BFB81FAC49E9D5E1C1B767E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_678B65808E3510A0AA5B9D5E1C1B6988" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_AE55B3E78BFB81FAC49E9D5E1C1B767E" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_678B65808E3510A0AA5B9D5E1C1B6988" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_OrbitalATKMember" xlink:label="loc_noc_OrbitalATKMember_BA22DF887EA74F6E2D6C9D5E1C1B5594" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_678B65808E3510A0AA5B9D5E1C1B6988" xlink:to="loc_noc_OrbitalATKMember_BA22DF887EA74F6E2D6C9D5E1C1B5594" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShortTermDebtTypeAxis" xlink:label="loc_us-gaap_ShortTermDebtTypeAxis_056F32113B89CE5C087B9D5E1C1B0C81" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentTable_A2E421AFFD2231767FF09D5E1C1BA086" xlink:to="loc_us-gaap_ShortTermDebtTypeAxis_056F32113B89CE5C087B9D5E1C1B0C81" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShortTermDebtTypeDomain" xlink:label="loc_us-gaap_ShortTermDebtTypeDomain_E5C15090DA66D159ADB29D5E1C1BD442" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShortTermDebtTypeAxis_056F32113B89CE5C087B9D5E1C1B0C81" xlink:to="loc_us-gaap_ShortTermDebtTypeDomain_E5C15090DA66D159ADB29D5E1C1BD442" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommercialPaperMember" xlink:label="loc_us-gaap_CommercialPaperMember_81C06BD7DE5005C4F1949D5E1C1B8DAE" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShortTermDebtTypeDomain_E5C15090DA66D159ADB29D5E1C1BD442" xlink:to="loc_us-gaap_CommercialPaperMember_81C06BD7DE5005C4F1949D5E1C1B8DAE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_VariableRateAxis" xlink:label="loc_us-gaap_VariableRateAxis_9A3C581166F1DD16D9199D5E1C1B2B77" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentTable_A2E421AFFD2231767FF09D5E1C1BA086" xlink:to="loc_us-gaap_VariableRateAxis_9A3C581166F1DD16D9199D5E1C1B2B77" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_VariableRateDomain" xlink:label="loc_us-gaap_VariableRateDomain_B87DA7852C0631D41E109D5E1C1B9C35" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_VariableRateAxis_9A3C581166F1DD16D9199D5E1C1B2B77" xlink:to="loc_us-gaap_VariableRateDomain_B87DA7852C0631D41E109D5E1C1B9C35" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LondonInterbankOfferedRateLIBORMember" xlink:label="loc_us-gaap_LondonInterbankOfferedRateLIBORMember_D2DE679562C2E47C02D09D5E1C1B8895" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_VariableRateDomain_B87DA7852C0631D41E109D5E1C1B9C35" xlink:to="loc_us-gaap_LondonInterbankOfferedRateLIBORMember_D2DE679562C2E47C02D09D5E1C1B8895" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CreditFacilityAxis" xlink:label="loc_us-gaap_CreditFacilityAxis_A715CA3344CFEBC4969B9D5E1C1BA43F" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentTable_A2E421AFFD2231767FF09D5E1C1BA086" xlink:to="loc_us-gaap_CreditFacilityAxis_A715CA3344CFEBC4969B9D5E1C1BA43F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CreditFacilityDomain" xlink:label="loc_us-gaap_CreditFacilityDomain_E3EFAB5997F258C14D8D9D5E1C1BD591" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CreditFacilityAxis_A715CA3344CFEBC4969B9D5E1C1BA43F" xlink:to="loc_us-gaap_CreditFacilityDomain_E3EFAB5997F258C14D8D9D5E1C1BD591" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RevolvingCreditFacilityMember" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_1393138326965409781E9D5E1C1B495F" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CreditFacilityDomain_E3EFAB5997F258C14D8D9D5E1C1BD591" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_1393138326965409781E9D5E1C1B495F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentAxis" xlink:label="loc_us-gaap_DebtInstrumentAxis_115C7C731396A710C4BD9D5E1C1B5A04" xlink:type="locator" />
    <link:presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentTable_A2E421AFFD2231767FF09D5E1C1BA086" xlink:to="loc_us-gaap_DebtInstrumentAxis_115C7C731396A710C4BD9D5E1C1B5A04" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_BC9D376C1F2D30866C009D5E1C1B24D9" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentAxis_115C7C731396A710C4BD9D5E1C1B5A04" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_BC9D376C1F2D30866C009D5E1C1B24D9" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_April2018MaturityDomain" xlink:label="loc_noc_April2018MaturityDomain_9AA2D7EE8A0C393E144D9D5E1C1B2C6F" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_BC9D376C1F2D30866C009D5E1C1B24D9" xlink:to="loc_noc_April2018MaturityDomain_9AA2D7EE8A0C393E144D9D5E1C1B2C6F" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_FiveYearTermMemberDomain" xlink:label="loc_noc_FiveYearTermMemberDomain_C53346E7EAED0A2C0FB89D5E1C1BC8A7" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_BC9D376C1F2D30866C009D5E1C1B24D9" xlink:to="loc_noc_FiveYearTermMemberDomain_C53346E7EAED0A2C0FB89D5E1C1BC8A7" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_TwoYearTermMemberDomain" xlink:label="loc_noc_TwoYearTermMemberDomain_A88FAECE53D6BD9B57169D5E1C1B1D04" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_BC9D376C1F2D30866C009D5E1C1B24D9" xlink:to="loc_noc_TwoYearTermMemberDomain_A88FAECE53D6BD9B57169D5E1C1B1D04" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentLineItems" xlink:label="loc_us-gaap_DebtInstrumentLineItems_D6E6573A25F869FAE62D9D5E1C1BC36B" xlink:type="locator" />
    <link:presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentTable_A2E421AFFD2231767FF09D5E1C1BA086" xlink:to="loc_us-gaap_DebtInstrumentLineItems_D6E6573A25F869FAE62D9D5E1C1BC36B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_A5D4443D88CA66B838BB9D5E1C1BC1CC" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_D6E6573A25F869FAE62D9D5E1C1BC36B" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_A5D4443D88CA66B838BB9D5E1C1BC1CC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LineOfCreditFacilityCovenantTerms" xlink:label="loc_us-gaap_LineOfCreditFacilityCovenantTerms_0CD39120EEC7FA393A269D5E1C1B7533" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_D6E6573A25F869FAE62D9D5E1C1BC36B" xlink:to="loc_us-gaap_LineOfCreditFacilityCovenantTerms_0CD39120EEC7FA393A269D5E1C1B7533" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_ShortTermDebtMaximumBorrowingCapacity" xlink:label="loc_noc_ShortTermDebtMaximumBorrowingCapacity_89A06BE663F2D47A4D6E9D5E1C1B10DD" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_D6E6573A25F869FAE62D9D5E1C1BC36B" xlink:to="loc_noc_ShortTermDebtMaximumBorrowingCapacity_89A06BE663F2D47A4D6E9D5E1C1B10DD" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentTerm" xlink:label="loc_us-gaap_DebtInstrumentTerm_A397B55C89BB3F36386F9D5E1C1BB60F" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_D6E6573A25F869FAE62D9D5E1C1BC36B" xlink:to="loc_us-gaap_DebtInstrumentTerm_A397B55C89BB3F36386F9D5E1C1BB60F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LineOfCreditFacilityInterestRateDuringPeriod" xlink:label="loc_us-gaap_LineOfCreditFacilityInterestRateDuringPeriod_92EBEA70D25A379C90939D5E1C1BBD1D" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_D6E6573A25F869FAE62D9D5E1C1BC36B" xlink:to="loc_us-gaap_LineOfCreditFacilityInterestRateDuringPeriod_92EBEA70D25A379C90939D5E1C1BBD1D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShortTermDebtWeightedAverageInterestRate" xlink:label="loc_us-gaap_ShortTermDebtWeightedAverageInterestRate_2FEFE7A2B520CDDEFBF29D5E1C1B084F" xlink:type="locator" />
    <link:presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_D6E6573A25F869FAE62D9D5E1C1BC36B" xlink:to="loc_us-gaap_ShortTermDebtWeightedAverageInterestRate_2FEFE7A2B520CDDEFBF29D5E1C1B084F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LineOfCredit" xlink:label="loc_us-gaap_LineOfCredit_86946EF772AE52C0D8959D5E1C1B7E2F" xlink:type="locator" />
    <link:presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_D6E6573A25F869FAE62D9D5E1C1BC36B" xlink:to="loc_us-gaap_LineOfCredit_86946EF772AE52C0D8959D5E1C1B7E2F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LineOfCreditFacilityCovenantCompliance" xlink:label="loc_us-gaap_LineOfCreditFacilityCovenantCompliance_B5DF45D59C2E2226A4C99D5E1C1B0016" xlink:type="locator" />
    <link:presentationArc order="8" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_D6E6573A25F869FAE62D9D5E1C1BC36B" xlink:to="loc_us-gaap_LineOfCreditFacilityCovenantCompliance_B5DF45D59C2E2226A4C99D5E1C1B0016" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShortTermBorrowings" xlink:label="loc_us-gaap_ShortTermBorrowings_AFE63990FFA6AC6422EF9D5E1C1BA5C9" xlink:type="locator" />
    <link:presentationArc order="9" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_D6E6573A25F869FAE62D9D5E1C1BC36B" xlink:to="loc_us-gaap_ShortTermBorrowings_AFE63990FFA6AC6422EF9D5E1C1BA5C9" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/LongTermDebtDetails4" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtDisclosureAbstract" xlink:label="loc_us-gaap_DebtDisclosureAbstract_6A1AD3A9DBD486BC19F0977AA56CA89E" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentTable" xlink:label="loc_us-gaap_DebtInstrumentTable_EBF1174CCABAFC86E8E1977AA56C1385" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtDisclosureAbstract_6A1AD3A9DBD486BC19F0977AA56CA89E" xlink:to="loc_us-gaap_DebtInstrumentTable_EBF1174CCABAFC86E8E1977AA56C1385" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_D45F88E895277FE7E50D977AA56CA25D" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentTable_EBF1174CCABAFC86E8E1977AA56C1385" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_D45F88E895277FE7E50D977AA56CA25D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_EEC74881170CA0A4E6E3977AA56DCCD4" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_D45F88E895277FE7E50D977AA56CA25D" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_EEC74881170CA0A4E6E3977AA56DCCD4" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_OrbitalATKMember" xlink:label="loc_noc_OrbitalATKMember_3548DBCCE5310F965AA3977AA56D14F2" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_EEC74881170CA0A4E6E3977AA56DCCD4" xlink:to="loc_noc_OrbitalATKMember_3548DBCCE5310F965AA3977AA56D14F2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentAxis" xlink:label="loc_us-gaap_DebtInstrumentAxis_D0E0A1FE95886B9CBC10977AA56D0B42" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentTable_EBF1174CCABAFC86E8E1977AA56C1385" xlink:to="loc_us-gaap_DebtInstrumentAxis_D0E0A1FE95886B9CBC10977AA56D0B42" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_540F416FDDBFC13818E3977AA56D8172" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentAxis_D0E0A1FE95886B9CBC10977AA56D0B42" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_540F416FDDBFC13818E3977AA56D8172" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_TwoYearTermMemberDomain" xlink:label="loc_noc_TwoYearTermMemberDomain_0F6FB22178C4DF089892977AA56E7AF9" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_540F416FDDBFC13818E3977AA56D8172" xlink:to="loc_noc_TwoYearTermMemberDomain_0F6FB22178C4DF089892977AA56E7AF9" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_October2017NotesDomain" xlink:label="loc_noc_October2017NotesDomain_C53B0FEA979703032CFF977AA56EBBDA" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_540F416FDDBFC13818E3977AA56D8172" xlink:to="loc_noc_October2017NotesDomain_C53B0FEA979703032CFF977AA56EBBDA" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_A2020MaturityDomain" xlink:label="loc_noc_A2020MaturityDomain_9805DCF95465645366E7977AA56E6198" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_540F416FDDBFC13818E3977AA56D8172" xlink:to="loc_noc_A2020MaturityDomain_9805DCF95465645366E7977AA56E6198" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_A2022MaturityDomain" xlink:label="loc_noc_A2022MaturityDomain_F6024D0A5DBFECD488CB977AA56EB44D" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_540F416FDDBFC13818E3977AA56D8172" xlink:to="loc_noc_A2022MaturityDomain_F6024D0A5DBFECD488CB977AA56EB44D" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_A2025MaturityDomainDomain" xlink:label="loc_noc_A2025MaturityDomainDomain_4F7A5E9A8B7E93B25722977AA56EB765" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_540F416FDDBFC13818E3977AA56D8172" xlink:to="loc_noc_A2025MaturityDomainDomain_4F7A5E9A8B7E93B25722977AA56EB765" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_A2028MaturityDomain" xlink:label="loc_noc_A2028MaturityDomain_871D6B15E5D428E22423977AA56F19C0" xlink:type="locator" />
    <link:presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_540F416FDDBFC13818E3977AA56D8172" xlink:to="loc_noc_A2028MaturityDomain_871D6B15E5D428E22423977AA56F19C0" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_A2047MaturityDomain" xlink:label="loc_noc_A2047MaturityDomain_053E89114B926205273C977AA56F28B9" xlink:type="locator" />
    <link:presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_540F416FDDBFC13818E3977AA56D8172" xlink:to="loc_noc_A2047MaturityDomain_053E89114B926205273C977AA56F28B9" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_April2018MaturityDomain" xlink:label="loc_noc_April2018MaturityDomain_2E0E730A74BCE8EC67C0977AA56F882F" xlink:type="locator" />
    <link:presentationArc order="8" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_540F416FDDBFC13818E3977AA56D8172" xlink:to="loc_noc_April2018MaturityDomain_2E0E730A74BCE8EC67C0977AA56F882F" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_February2027MaturityDomain" xlink:label="loc_noc_February2027MaturityDomain_BD38A7B493073E5E19AD977AA56F7B14" xlink:type="locator" />
    <link:presentationArc order="9" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_540F416FDDBFC13818E3977AA56D8172" xlink:to="loc_noc_February2027MaturityDomain_BD38A7B493073E5E19AD977AA56F7B14" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongtermDebtTypeAxis" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_A543BCBB6CD8B4B298C9977AA56FCADF" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentTable_EBF1174CCABAFC86E8E1977AA56C1385" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_A543BCBB6CD8B4B298C9977AA56FCADF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_55F0B98B94ACD2B55190977AA56FD73A" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_A543BCBB6CD8B4B298C9977AA56FCADF" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_55F0B98B94ACD2B55190977AA56FD73A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SeniorNotesMember" xlink:label="loc_us-gaap_SeniorNotesMember_6031964D7A2A5746081A977AA570819B" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_55F0B98B94ACD2B55190977AA56FD73A" xlink:to="loc_us-gaap_SeniorNotesMember_6031964D7A2A5746081A977AA570819B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentLineItems" xlink:label="loc_us-gaap_DebtInstrumentLineItems_1203232AA5B423EB8D38977AA5708EFC" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentTable_EBF1174CCABAFC86E8E1977AA56C1385" xlink:to="loc_us-gaap_DebtInstrumentLineItems_1203232AA5B423EB8D38977AA5708EFC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt_B1A830A5F7F96FF51371977AA570BF38" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_1203232AA5B423EB8D38977AA5708EFC" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt_B1A830A5F7F96FF51371977AA570BF38" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RepaymentsOfDebt" xlink:label="loc_us-gaap_RepaymentsOfDebt_9679C086BF94AAA6C1D3977AA5711293" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_1203232AA5B423EB8D38977AA5708EFC" xlink:to="loc_us-gaap_RepaymentsOfDebt_9679C086BF94AAA6C1D3977AA5711293" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentFaceAmount" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_30D1EC9B2F0932987A2C977AA571AAA9" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_1203232AA5B423EB8D38977AA5708EFC" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_30D1EC9B2F0932987A2C977AA571AAA9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_EF49CFAE52C4412F38BB977AA571DDC5" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_1203232AA5B423EB8D38977AA5708EFC" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_EF49CFAE52C4412F38BB977AA571DDC5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongTermDebt" xlink:label="loc_us-gaap_LongTermDebt_6ADB67FD2141AAB265B1977AA5711B65" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_1203232AA5B423EB8D38977AA5708EFC" xlink:to="loc_us-gaap_LongTermDebt_6ADB67FD2141AAB265B1977AA5711B65" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentMaturityDate" xlink:label="loc_us-gaap_DebtInstrumentMaturityDate_125C88A11871BBE05956977AA571870F" xlink:type="locator" />
    <link:presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_1203232AA5B423EB8D38977AA5708EFC" xlink:to="loc_us-gaap_DebtInstrumentMaturityDate_125C88A11871BBE05956977AA571870F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongTermDebtFairValue" xlink:label="loc_us-gaap_LongTermDebtFairValue_7BDA5AC80A13E8B43D8E977AA5716A78" xlink:type="locator" />
    <link:presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_1203232AA5B423EB8D38977AA5708EFC" xlink:to="loc_us-gaap_LongTermDebtFairValue_7BDA5AC80A13E8B43D8E977AA5716A78" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_InterestPaidNetOfInterestReceived" xlink:label="loc_noc_InterestPaidNetOfInterestReceived_ED662F1AEB1161DB0270977AA5721FB7" xlink:type="locator" />
    <link:presentationArc order="8" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_1203232AA5B423EB8D38977AA5708EFC" xlink:to="loc_noc_InterestPaidNetOfInterestReceived_ED662F1AEB1161DB0270977AA5721FB7" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/LongTermDebtTables" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtDisclosureAbstract" xlink:label="loc_us-gaap_DebtDisclosureAbstract_055D4990DE2D0BABAF2C977AA5A26EC7" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfDebtInstrumentsTextBlock" xlink:label="loc_us-gaap_ScheduleOfDebtInstrumentsTextBlock_D56C12FBE84EC76A88D0977AA5A2728E" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtDisclosureAbstract_055D4990DE2D0BABAF2C977AA5A26EC7" xlink:to="loc_us-gaap_ScheduleOfDebtInstrumentsTextBlock_D56C12FBE84EC76A88D0977AA5A2728E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock_680D070A3F884ABA173B977AA5A2540D" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtDisclosureAbstract_055D4990DE2D0BABAF2C977AA5A26EC7" xlink:to="loc_us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock_680D070A3F884ABA173B977AA5A2540D" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/Recast2017And2016FinancialInformation" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountingChangesAndErrorCorrectionsAbstract" xlink:label="loc_us-gaap_AccountingChangesAndErrorCorrectionsAbstract_BB9B8D55CED091491B1799F6FB1F5D0E" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountingChangesAndErrorCorrectionsTextBlock" xlink:label="loc_us-gaap_AccountingChangesAndErrorCorrectionsTextBlock_2EE1574D6E8DB4A1DAA699F6FB1F627B" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingChangesAndErrorCorrectionsAbstract_BB9B8D55CED091491B1799F6FB1F5D0E" xlink:to="loc_us-gaap_AccountingChangesAndErrorCorrectionsTextBlock_2EE1574D6E8DB4A1DAA699F6FB1F627B" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/Recast2017And2016FinancialInformationDetails1" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountingChangesAndErrorCorrectionsAbstract" xlink:label="loc_us-gaap_AccountingChangesAndErrorCorrectionsAbstract_320322136AF484231B209BA6B9093649" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_3E1032B79C4E2B6416A99BA6B9090EA2" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingChangesAndErrorCorrectionsAbstract_320322136AF484231B209BA6B9093649" xlink:to="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_3E1032B79C4E2B6416A99BA6B9090EA2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ProductOrServiceAxis" xlink:label="loc_srt_ProductOrServiceAxis_03B54FE9979381D6AD129BA6B90A3A35" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_3E1032B79C4E2B6416A99BA6B9090EA2" xlink:to="loc_srt_ProductOrServiceAxis_03B54FE9979381D6AD129BA6B90A3A35" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ProductsAndServicesDomain" xlink:label="loc_srt_ProductsAndServicesDomain_6A11DBF44931251F2AAE9BA6B90AAF72" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_ProductOrServiceAxis_03B54FE9979381D6AD129BA6B90A3A35" xlink:to="loc_srt_ProductsAndServicesDomain_6A11DBF44931251F2AAE9BA6B90AAF72" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProductMember" xlink:label="loc_us-gaap_ProductMember_812588C9CFA658FE5AB39BA6B90A5082" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_ProductsAndServicesDomain_6A11DBF44931251F2AAE9BA6B90AAF72" xlink:to="loc_us-gaap_ProductMember_812588C9CFA658FE5AB39BA6B90A5082" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ServiceMember" xlink:label="loc_us-gaap_ServiceMember_9AD70C8AD52F893FC8499BA6B90BF38D" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_ProductsAndServicesDomain_6A11DBF44931251F2AAE9BA6B90AAF72" xlink:to="loc_us-gaap_ServiceMember_9AD70C8AD52F893FC8499BA6B90BF38D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:label="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_5F8BB7C2AB190D59B4EB9BA6B90B462B" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_3E1032B79C4E2B6416A99BA6B9090EA2" xlink:to="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_5F8BB7C2AB190D59B4EB9BA6B90B462B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TypeOfAdoptionMember" xlink:label="loc_us-gaap_TypeOfAdoptionMember_DE249C22A82271F8C8B09BA6B90BCA3A" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_5F8BB7C2AB190D59B4EB9BA6B90B462B" xlink:to="loc_us-gaap_TypeOfAdoptionMember_DE249C22A82271F8C8B09BA6B90BCA3A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountingStandardsUpdate201409Member" xlink:label="loc_us-gaap_AccountingStandardsUpdate201409Member_6717DF088F5B3F27D9799BA6B90B4FE1" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_TypeOfAdoptionMember_DE249C22A82271F8C8B09BA6B90BCA3A" xlink:to="loc_us-gaap_AccountingStandardsUpdate201409Member_6717DF088F5B3F27D9799BA6B90B4FE1" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_AccountingStandardsUpdate201707Domain" xlink:label="loc_noc_AccountingStandardsUpdate201707Domain_B936AB5186199E3F9B109BA6B90C23CF" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_TypeOfAdoptionMember_DE249C22A82271F8C8B09BA6B90BCA3A" xlink:to="loc_noc_AccountingStandardsUpdate201707Domain_B936AB5186199E3F9B109BA6B90C23CF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis" xlink:label="loc_us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_8D40474379537A88060B9BA6B90CA409" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_3E1032B79C4E2B6416A99BA6B9090EA2" xlink:to="loc_us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_8D40474379537A88060B9BA6B90CA409" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ChangeInAccountingPrincipleMember" xlink:label="loc_us-gaap_ChangeInAccountingPrincipleMember_D45A189AA7509793D75F9BA6B90C23E8" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_8D40474379537A88060B9BA6B90CA409" xlink:to="loc_us-gaap_ChangeInAccountingPrincipleMember_D45A189AA7509793D75F9BA6B90C23E8" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_AdjustmentsforchangetoDefinedBenefitPlanActuarialGainLossImmediateRecognitionasComponentinNetPeriodBenefitCostMember" xlink:label="loc_noc_AdjustmentsforchangetoDefinedBenefitPlanActuarialGainLossImmediateRecognitionasComponentinNetPeriodBenefitCostMember_78124ECE87C1C4AA12069BA6B90C88F2" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ChangeInAccountingPrincipleMember_D45A189AA7509793D75F9BA6B90C23E8" xlink:to="loc_noc_AdjustmentsforchangetoDefinedBenefitPlanActuarialGainLossImmediateRecognitionasComponentinNetPeriodBenefitCostMember_78124ECE87C1C4AA12069BA6B90C88F2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RestatementAxis" xlink:label="loc_srt_RestatementAxis_C6577EC4D9F7CADD44149BA6B90D7EE6" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_3E1032B79C4E2B6416A99BA6B9090EA2" xlink:to="loc_srt_RestatementAxis_C6577EC4D9F7CADD44149BA6B90D7EE6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RestatementDomain" xlink:label="loc_srt_RestatementDomain_D37A549BBE09D68D5BD29BA6B90DE8A1" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RestatementAxis_C6577EC4D9F7CADD44149BA6B90D7EE6" xlink:to="loc_srt_RestatementDomain_D37A549BBE09D68D5BD29BA6B90DE8A1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ScenarioPreviouslyReportedMember" xlink:label="loc_srt_ScenarioPreviouslyReportedMember_5152D6AEBA42958973AB9BA6B90D9A04" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RestatementDomain_D37A549BBE09D68D5BD29BA6B90DE8A1" xlink:to="loc_srt_ScenarioPreviouslyReportedMember_5152D6AEBA42958973AB9BA6B90D9A04" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementMember" xlink:label="loc_us-gaap_NewAccountingPronouncementMember_690353A6D8C26F4DB4059BA6B90E3FA2" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RestatementDomain_D37A549BBE09D68D5BD29BA6B90DE8A1" xlink:to="loc_us-gaap_NewAccountingPronouncementMember_690353A6D8C26F4DB4059BA6B90E3FA2" xlink:type="arc" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RestatementDomain_D37A549BBE09D68D5BD29BA6B90DE8A1" xlink:to="loc_us-gaap_ChangeInAccountingPrincipleMember_D45A189AA7509793D75F9BA6B90C23E8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_1A014E623463B9E7906A9BA6B90EE57D" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_3E1032B79C4E2B6416A99BA6B9090EA2" xlink:to="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_1A014E623463B9E7906A9BA6B90EE57D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_125252AB5CFFC7439A219BA6B90F29BB" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_1A014E623463B9E7906A9BA6B90EE57D" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_125252AB5CFFC7439A219BA6B90F29BB" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Revenues" xlink:label="loc_us-gaap_Revenues_871C6F307486A027F0D69BA6B90FC5B6" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_1A014E623463B9E7906A9BA6B90EE57D" xlink:to="loc_us-gaap_Revenues_871C6F307486A027F0D69BA6B90FC5B6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CostOfGoodsAndServicesSold" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSold_FF6D248B9C526E1B6E919BA6B90F7F70" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_1A014E623463B9E7906A9BA6B90EE57D" xlink:to="loc_us-gaap_CostOfGoodsAndServicesSold_FF6D248B9C526E1B6E919BA6B90F7F70" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GeneralAndAdministrativeExpense" xlink:label="loc_us-gaap_GeneralAndAdministrativeExpense_77B69427A775B16B1AEC9BA6B90F629D" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_1A014E623463B9E7906A9BA6B90EE57D" xlink:to="loc_us-gaap_GeneralAndAdministrativeExpense_77B69427A775B16B1AEC9BA6B90F629D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:label="loc_us-gaap_OperatingIncomeLoss_2D2F70E1466FF116BAAC9BA6B90F7EE4" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_1A014E623463B9E7906A9BA6B90EE57D" xlink:to="loc_us-gaap_OperatingIncomeLoss_2D2F70E1466FF116BAAC9BA6B90F7EE4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InterestAndDebtExpense" xlink:label="loc_us-gaap_InterestAndDebtExpense_DFFFFE9F2BECC81B6FD09BA6B910F56D" xlink:type="locator" />
    <link:presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_1A014E623463B9E7906A9BA6B90EE57D" xlink:to="loc_us-gaap_InterestAndDebtExpense_DFFFFE9F2BECC81B6FD09BA6B910F56D" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_NetFASnonservicePensionBenefitExpense" xlink:label="loc_noc_NetFASnonservicePensionBenefitExpense_22CD508AED950F9BB7D59BA6B9101CB8" xlink:type="locator" />
    <link:presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_1A014E623463B9E7906A9BA6B90EE57D" xlink:to="loc_noc_NetFASnonservicePensionBenefitExpense_22CD508AED950F9BB7D59BA6B9101CB8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanActuarialGainLossImmediateRecognitionAsComponentInNetPeriodicBenefitCostCredit" xlink:label="loc_us-gaap_DefinedBenefitPlanActuarialGainLossImmediateRecognitionAsComponentInNetPeriodicBenefitCostCredit_07D29E705C640BEEFAA49BA6B910A855" xlink:type="locator" />
    <link:presentationArc order="8" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_1A014E623463B9E7906A9BA6B90EE57D" xlink:to="loc_us-gaap_DefinedBenefitPlanActuarialGainLossImmediateRecognitionAsComponentInNetPeriodicBenefitCostCredit_07D29E705C640BEEFAA49BA6B910A855" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherNonoperatingIncomeExpense" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_4F0B3932DEE01C1F00669BA6B91078F3" xlink:type="locator" />
    <link:presentationArc order="9" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_1A014E623463B9E7906A9BA6B90EE57D" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_4F0B3932DEE01C1F00669BA6B91078F3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_7D4734B0E1A96518E5109BA6B9103643" xlink:type="locator" />
    <link:presentationArc order="10" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_1A014E623463B9E7906A9BA6B90EE57D" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_7D4734B0E1A96518E5109BA6B9103643" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_CD40627944D44B19400D9BA6B910D9A7" xlink:type="locator" />
    <link:presentationArc order="11" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_1A014E623463B9E7906A9BA6B90EE57D" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_CD40627944D44B19400D9BA6B910D9A7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_18C126A6AC8D7C510A399BA6B91110E4" xlink:type="locator" />
    <link:presentationArc order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_1A014E623463B9E7906A9BA6B90EE57D" xlink:to="loc_us-gaap_NetIncomeLoss_18C126A6AC8D7C510A399BA6B91110E4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EarningsPerShareBasic" xlink:label="loc_us-gaap_EarningsPerShareBasic_A529094EC19504C587AF9BA6B91128BD" xlink:type="locator" />
    <link:presentationArc order="13" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_1A014E623463B9E7906A9BA6B90EE57D" xlink:to="loc_us-gaap_EarningsPerShareBasic_A529094EC19504C587AF9BA6B91128BD" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_726A1CACFE5A68D44FEF9BA6B911EDFE" xlink:type="locator" />
    <link:presentationArc order="14" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_1A014E623463B9E7906A9BA6B90EE57D" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_726A1CACFE5A68D44FEF9BA6B911EDFE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EarningsPerShareDiluted" xlink:label="loc_us-gaap_EarningsPerShareDiluted_903E064197E69246CF5A9BA6B911F9E0" xlink:type="locator" />
    <link:presentationArc order="15" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_1A014E623463B9E7906A9BA6B90EE57D" xlink:to="loc_us-gaap_EarningsPerShareDiluted_903E064197E69246CF5A9BA6B911F9E0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_D9A4313D973FA43936ED9BA6B911979A" xlink:type="locator" />
    <link:presentationArc order="16" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_1A014E623463B9E7906A9BA6B90EE57D" xlink:to="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_D9A4313D973FA43936ED9BA6B911979A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_1B2D0C0D390F2B29CF5A9BA6B911246A" xlink:type="locator" />
    <link:presentationArc order="17" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_1A014E623463B9E7906A9BA6B90EE57D" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_1B2D0C0D390F2B29CF5A9BA6B911246A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_344526D5E16AD3540EC29BA6B912F85E" xlink:type="locator" />
    <link:presentationArc order="18" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_1A014E623463B9E7906A9BA6B90EE57D" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_344526D5E16AD3540EC29BA6B912F85E" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_OtherComprehensiveIncomelossotheradjustmentnetoftax" xlink:label="loc_noc_OtherComprehensiveIncomelossotheradjustmentnetoftax_B99B7BE0475143BEE0029BA6B91226DD" xlink:type="locator" />
    <link:presentationArc order="19" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_1A014E623463B9E7906A9BA6B90EE57D" xlink:to="loc_noc_OtherComprehensiveIncomelossotheradjustmentnetoftax_B99B7BE0475143BEE0029BA6B91226DD" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_FB56176D34B1E14C3C539BA6B912EC9A" xlink:type="locator" />
    <link:presentationArc order="20" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_1A014E623463B9E7906A9BA6B90EE57D" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_FB56176D34B1E14C3C539BA6B912EC9A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTax" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_D364E734F589D31DB9649BA6B9123BBC" xlink:type="locator" />
    <link:presentationArc order="21" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_1A014E623463B9E7906A9BA6B90EE57D" xlink:to="loc_us-gaap_ComprehensiveIncomeNetOfTax_D364E734F589D31DB9649BA6B9123BBC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountsReceivableNetCurrent" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_77013EB5B72DF2DC298B9BA6B912CA8C" xlink:type="locator" />
    <link:presentationArc order="22" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_1A014E623463B9E7906A9BA6B90EE57D" xlink:to="loc_us-gaap_AccountsReceivableNetCurrent_77013EB5B72DF2DC298B9BA6B912CA8C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_UnbilledReceivablesCurrent" xlink:label="loc_us-gaap_UnbilledReceivablesCurrent_8BB95E6DF76098F9E3C19BA6B912C3BB" xlink:type="locator" />
    <link:presentationArc order="23" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_1A014E623463B9E7906A9BA6B90EE57D" xlink:to="loc_us-gaap_UnbilledReceivablesCurrent_8BB95E6DF76098F9E3C19BA6B912C3BB" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InventoryNet" xlink:label="loc_us-gaap_InventoryNet_A19D2E28F796AB969E4D9BA6B913712E" xlink:type="locator" />
    <link:presentationArc order="24" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_1A014E623463B9E7906A9BA6B90EE57D" xlink:to="loc_us-gaap_InventoryNet_A19D2E28F796AB969E4D9BA6B913712E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherAssetsCurrent" xlink:label="loc_us-gaap_OtherAssetsCurrent_82D9DC9E1E30114FC0509BA6B9133EDE" xlink:type="locator" />
    <link:presentationArc order="25" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_1A014E623463B9E7906A9BA6B90EE57D" xlink:to="loc_us-gaap_OtherAssetsCurrent_82D9DC9E1E30114FC0509BA6B9133EDE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AssetsCurrent" xlink:label="loc_us-gaap_AssetsCurrent_6A33D6BFFED27D9BB6D29BA6B9139F92" xlink:type="locator" />
    <link:presentationArc order="26" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_1A014E623463B9E7906A9BA6B90EE57D" xlink:to="loc_us-gaap_AssetsCurrent_6A33D6BFFED27D9BB6D29BA6B9139F92" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_2C1AA39D52566F2FEDB99BA6B913FCFA" xlink:type="locator" />
    <link:presentationArc order="27" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_1A014E623463B9E7906A9BA6B90EE57D" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_2C1AA39D52566F2FEDB99BA6B913FCFA" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Goodwill" xlink:label="loc_us-gaap_Goodwill_B1630EA8FD029EEE7F489BA6B9138179" xlink:type="locator" />
    <link:presentationArc order="28" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_1A014E623463B9E7906A9BA6B90EE57D" xlink:to="loc_us-gaap_Goodwill_B1630EA8FD029EEE7F489BA6B9138179" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_D45DE8C14F2E36E3BAD19BA6B913F20B" xlink:type="locator" />
    <link:presentationArc order="29" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_1A014E623463B9E7906A9BA6B90EE57D" xlink:to="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_D45DE8C14F2E36E3BAD19BA6B913F20B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredTaxAssetsLiabilitiesNetNoncurrent" xlink:label="loc_us-gaap_DeferredTaxAssetsLiabilitiesNetNoncurrent_9DC053BB5B0D680E1A8B9BA6B914B4B1" xlink:type="locator" />
    <link:presentationArc order="30" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_1A014E623463B9E7906A9BA6B90EE57D" xlink:to="loc_us-gaap_DeferredTaxAssetsLiabilitiesNetNoncurrent_9DC053BB5B0D680E1A8B9BA6B914B4B1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherAssetsNoncurrent" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_4E4E2EA35E1B9F19ECBE9BA6B9142E44" xlink:type="locator" />
    <link:presentationArc order="31" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_1A014E623463B9E7906A9BA6B90EE57D" xlink:to="loc_us-gaap_OtherAssetsNoncurrent_4E4E2EA35E1B9F19ECBE9BA6B9142E44" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Assets" xlink:label="loc_us-gaap_Assets_B533CBFA9E3DEDF172089BA6B9146D01" xlink:type="locator" />
    <link:presentationArc order="32" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_1A014E623463B9E7906A9BA6B90EE57D" xlink:to="loc_us-gaap_Assets_B533CBFA9E3DEDF172089BA6B9146D01" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountsPayableCurrent" xlink:label="loc_us-gaap_AccountsPayableCurrent_ED75AB1C8404DA3684169BA6B914ECF3" xlink:type="locator" />
    <link:presentationArc order="33" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_1A014E623463B9E7906A9BA6B90EE57D" xlink:to="loc_us-gaap_AccountsPayableCurrent_ED75AB1C8404DA3684169BA6B914ECF3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrent" xlink:label="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_C600EC09FE85418B2AFD9BA6B9141C9C" xlink:type="locator" />
    <link:presentationArc order="34" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_1A014E623463B9E7906A9BA6B90EE57D" xlink:to="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_C600EC09FE85418B2AFD9BA6B9141C9C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CustomerAdvancesCurrent" xlink:label="loc_us-gaap_CustomerAdvancesCurrent_E5C9F7FBD7F7279FAB7B9BA6B9155DF2" xlink:type="locator" />
    <link:presentationArc order="35" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_1A014E623463B9E7906A9BA6B90EE57D" xlink:to="loc_us-gaap_CustomerAdvancesCurrent_E5C9F7FBD7F7279FAB7B9BA6B9155DF2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherLiabilitiesCurrent" xlink:label="loc_us-gaap_OtherLiabilitiesCurrent_93B85FC031207EB278529BA6B915DB1B" xlink:type="locator" />
    <link:presentationArc order="36" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_1A014E623463B9E7906A9BA6B90EE57D" xlink:to="loc_us-gaap_OtherLiabilitiesCurrent_93B85FC031207EB278529BA6B915DB1B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LiabilitiesCurrent" xlink:label="loc_us-gaap_LiabilitiesCurrent_47871E4884D3748483559BA6B915650A" xlink:type="locator" />
    <link:presentationArc order="37" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_1A014E623463B9E7906A9BA6B90EE57D" xlink:to="loc_us-gaap_LiabilitiesCurrent_47871E4884D3748483559BA6B915650A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligations" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_020E261B9D432E1A06069BA6B915EBAD" xlink:type="locator" />
    <link:presentationArc order="38" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_1A014E623463B9E7906A9BA6B90EE57D" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_020E261B9D432E1A06069BA6B915EBAD" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent" xlink:label="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_BA189D308C49E2960EBB9BA6B91553D9" xlink:type="locator" />
    <link:presentationArc order="39" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_1A014E623463B9E7906A9BA6B90EE57D" xlink:to="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_BA189D308C49E2960EBB9BA6B91553D9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherLiabilitiesNoncurrent" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_92CA291010DBE37A0E349BA6B915E2AE" xlink:type="locator" />
    <link:presentationArc order="40" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_1A014E623463B9E7906A9BA6B90EE57D" xlink:to="loc_us-gaap_OtherLiabilitiesNoncurrent_92CA291010DBE37A0E349BA6B915E2AE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Liabilities" xlink:label="loc_us-gaap_Liabilities_0BBECF894343443C1CDF9BA6B916F750" xlink:type="locator" />
    <link:presentationArc order="41" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_1A014E623463B9E7906A9BA6B90EE57D" xlink:to="loc_us-gaap_Liabilities_0BBECF894343443C1CDF9BA6B916F750" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PreferredStockValue" xlink:label="loc_us-gaap_PreferredStockValue_04112FB05E2CCC41650D9BA6B91696D4" xlink:type="locator" />
    <link:presentationArc order="42" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_1A014E623463B9E7906A9BA6B90EE57D" xlink:to="loc_us-gaap_PreferredStockValue_04112FB05E2CCC41650D9BA6B91696D4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommonStockValue" xlink:label="loc_us-gaap_CommonStockValue_5E1421F08747BEDBFEAD9BA6B9162041" xlink:type="locator" />
    <link:presentationArc order="43" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_1A014E623463B9E7906A9BA6B90EE57D" xlink:to="loc_us-gaap_CommonStockValue_5E1421F08747BEDBFEAD9BA6B9162041" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdditionalPaidInCapitalCommonStock" xlink:label="loc_us-gaap_AdditionalPaidInCapitalCommonStock_1FC3B8A775F99C61CD0A9BA6B916150D" xlink:type="locator" />
    <link:presentationArc order="44" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_1A014E623463B9E7906A9BA6B90EE57D" xlink:to="loc_us-gaap_AdditionalPaidInCapitalCommonStock_1FC3B8A775F99C61CD0A9BA6B916150D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_3903811F79F6940699AA9BA6B91661C8" xlink:type="locator" />
    <link:presentationArc order="45" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_1A014E623463B9E7906A9BA6B90EE57D" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_3903811F79F6940699AA9BA6B91661C8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_83C9F0C01C47979515879BA6B9162BBC" xlink:type="locator" />
    <link:presentationArc order="46" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_1A014E623463B9E7906A9BA6B90EE57D" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_83C9F0C01C47979515879BA6B9162BBC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockholdersEquity" xlink:label="loc_us-gaap_StockholdersEquity_42ABFF5987C0EFD0FFB19BA6B9171A93" xlink:type="locator" />
    <link:presentationArc order="47" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_1A014E623463B9E7906A9BA6B90EE57D" xlink:to="loc_us-gaap_StockholdersEquity_42ABFF5987C0EFD0FFB19BA6B9171A93" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_0C08919C367B084BDC949BA6B91747A6" xlink:type="locator" />
    <link:presentationArc order="48" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_1A014E623463B9E7906A9BA6B90EE57D" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquity_0C08919C367B084BDC949BA6B91747A6" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/Recast2017And2016FinancialInformationDetails2" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountingChangesAndErrorCorrectionsAbstract" xlink:label="loc_us-gaap_AccountingChangesAndErrorCorrectionsAbstract_5FBA98E23A45231EA1C099F6F514A9C3" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_6B0F8070326E6370895599F6F51451D6" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingChangesAndErrorCorrectionsAbstract_5FBA98E23A45231EA1C099F6F514A9C3" xlink:to="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_6B0F8070326E6370895599F6F51451D6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:label="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_9771BE777A2F0A08BCBD99F6F514F6D5" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_6B0F8070326E6370895599F6F51451D6" xlink:to="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_9771BE777A2F0A08BCBD99F6F514F6D5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TypeOfAdoptionMember" xlink:label="loc_us-gaap_TypeOfAdoptionMember_A5704379408D11734EA899F6F5143336" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_9771BE777A2F0A08BCBD99F6F514F6D5" xlink:to="loc_us-gaap_TypeOfAdoptionMember_A5704379408D11734EA899F6F5143336" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountingStandardsUpdate201409Member" xlink:label="loc_us-gaap_AccountingStandardsUpdate201409Member_CBA781AF0E1A8F774F7A99F6F514FE2B" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_TypeOfAdoptionMember_A5704379408D11734EA899F6F5143336" xlink:to="loc_us-gaap_AccountingStandardsUpdate201409Member_CBA781AF0E1A8F774F7A99F6F514FE2B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis" xlink:label="loc_us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_DFB9A7356AD139C8DE1E99F6F5141707" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_6B0F8070326E6370895599F6F51451D6" xlink:to="loc_us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_DFB9A7356AD139C8DE1E99F6F5141707" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ChangeInAccountingPrincipleMember" xlink:label="loc_us-gaap_ChangeInAccountingPrincipleMember_82E273AF780107EF986C99F6F514FC32" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_DFB9A7356AD139C8DE1E99F6F5141707" xlink:to="loc_us-gaap_ChangeInAccountingPrincipleMember_82E273AF780107EF986C99F6F514FC32" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_AdjustmentsforchangetoDefinedBenefitPlanActuarialGainLossImmediateRecognitionasComponentinNetPeriodBenefitCostMember" xlink:label="loc_noc_AdjustmentsforchangetoDefinedBenefitPlanActuarialGainLossImmediateRecognitionasComponentinNetPeriodBenefitCostMember_D39071AF87B451FAD8EE99F6F514A939" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ChangeInAccountingPrincipleMember_82E273AF780107EF986C99F6F514FC32" xlink:to="loc_noc_AdjustmentsforchangetoDefinedBenefitPlanActuarialGainLossImmediateRecognitionasComponentinNetPeriodBenefitCostMember_D39071AF87B451FAD8EE99F6F514A939" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RestatementAxis" xlink:label="loc_srt_RestatementAxis_EA6B653F0A87ADFDDC0899F6F5145EFB" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_6B0F8070326E6370895599F6F51451D6" xlink:to="loc_srt_RestatementAxis_EA6B653F0A87ADFDDC0899F6F5145EFB" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RestatementDomain" xlink:label="loc_srt_RestatementDomain_30B2D4F08B3F50E8286099F6F514F206" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RestatementAxis_EA6B653F0A87ADFDDC0899F6F5145EFB" xlink:to="loc_srt_RestatementDomain_30B2D4F08B3F50E8286099F6F514F206" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementMember" xlink:label="loc_us-gaap_NewAccountingPronouncementMember_EF14FA4A63E2130BDAE899F6F5143388" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RestatementDomain_30B2D4F08B3F50E8286099F6F514F206" xlink:to="loc_us-gaap_NewAccountingPronouncementMember_EF14FA4A63E2130BDAE899F6F5143388" xlink:type="arc" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RestatementDomain_30B2D4F08B3F50E8286099F6F514F206" xlink:to="loc_us-gaap_ChangeInAccountingPrincipleMember_82E273AF780107EF986C99F6F514FC32" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_434636B63CD4F106FD6B99F6F514EF9A" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_6B0F8070326E6370895599F6F51451D6" xlink:to="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_434636B63CD4F106FD6B99F6F514EF9A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_09E655D75FF519AAC8AE99F6F51463A5" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_434636B63CD4F106FD6B99F6F514EF9A" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_09E655D75FF519AAC8AE99F6F51463A5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountsReceivableNetCurrent" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_3058DF83B84B8E93C28D99F6F514DD9B" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_434636B63CD4F106FD6B99F6F514EF9A" xlink:to="loc_us-gaap_AccountsReceivableNetCurrent_3058DF83B84B8E93C28D99F6F514DD9B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_UnbilledReceivablesCurrent" xlink:label="loc_us-gaap_UnbilledReceivablesCurrent_9D721D74806E575D826999F6F514BFE8" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_434636B63CD4F106FD6B99F6F514EF9A" xlink:to="loc_us-gaap_UnbilledReceivablesCurrent_9D721D74806E575D826999F6F514BFE8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InventoryNet" xlink:label="loc_us-gaap_InventoryNet_21EDCF61A9359AA5BA5B99F6F514420C" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_434636B63CD4F106FD6B99F6F514EF9A" xlink:to="loc_us-gaap_InventoryNet_21EDCF61A9359AA5BA5B99F6F514420C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherAssetsCurrent" xlink:label="loc_us-gaap_OtherAssetsCurrent_B49A966F5E3C4A56975399F6F5143D99" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_434636B63CD4F106FD6B99F6F514EF9A" xlink:to="loc_us-gaap_OtherAssetsCurrent_B49A966F5E3C4A56975399F6F5143D99" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AssetsCurrent" xlink:label="loc_us-gaap_AssetsCurrent_1A2D7FEA52558C06829799F6F5144B57" xlink:type="locator" />
    <link:presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_434636B63CD4F106FD6B99F6F514EF9A" xlink:to="loc_us-gaap_AssetsCurrent_1A2D7FEA52558C06829799F6F5144B57" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_097DD7C41FF19AEF1FBF99F6F514CC39" xlink:type="locator" />
    <link:presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_434636B63CD4F106FD6B99F6F514EF9A" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_097DD7C41FF19AEF1FBF99F6F514CC39" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Goodwill" xlink:label="loc_us-gaap_Goodwill_D411327BF8DE32F7A6CB99F6F51476F9" xlink:type="locator" />
    <link:presentationArc order="8" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_434636B63CD4F106FD6B99F6F514EF9A" xlink:to="loc_us-gaap_Goodwill_D411327BF8DE32F7A6CB99F6F51476F9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_B97F32D4AF7DF123D7C599F6F514BF20" xlink:type="locator" />
    <link:presentationArc order="9" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_434636B63CD4F106FD6B99F6F514EF9A" xlink:to="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_B97F32D4AF7DF123D7C599F6F514BF20" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredTaxAssetsLiabilitiesNetNoncurrent" xlink:label="loc_us-gaap_DeferredTaxAssetsLiabilitiesNetNoncurrent_F181E630FB885F78E6A399F6F51446FB" xlink:type="locator" />
    <link:presentationArc order="10" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_434636B63CD4F106FD6B99F6F514EF9A" xlink:to="loc_us-gaap_DeferredTaxAssetsLiabilitiesNetNoncurrent_F181E630FB885F78E6A399F6F51446FB" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherAssetsNoncurrent" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_E50E59B61AD55D307FEB99F6F5147DD3" xlink:type="locator" />
    <link:presentationArc order="11" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_434636B63CD4F106FD6B99F6F514EF9A" xlink:to="loc_us-gaap_OtherAssetsNoncurrent_E50E59B61AD55D307FEB99F6F5147DD3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Assets" xlink:label="loc_us-gaap_Assets_B99363BEE8494E05362199F6F514B76A" xlink:type="locator" />
    <link:presentationArc order="12" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_434636B63CD4F106FD6B99F6F514EF9A" xlink:to="loc_us-gaap_Assets_B99363BEE8494E05362199F6F514B76A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountsPayableCurrent" xlink:label="loc_us-gaap_AccountsPayableCurrent_D7C5D0AE4323E7E36F7899F6F5140B15" xlink:type="locator" />
    <link:presentationArc order="13" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_434636B63CD4F106FD6B99F6F514EF9A" xlink:to="loc_us-gaap_AccountsPayableCurrent_D7C5D0AE4323E7E36F7899F6F5140B15" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrent" xlink:label="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_13008A50AA2FC08F9A5699F6F514820C" xlink:type="locator" />
    <link:presentationArc order="14" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_434636B63CD4F106FD6B99F6F514EF9A" xlink:to="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_13008A50AA2FC08F9A5699F6F514820C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CustomerAdvancesCurrent" xlink:label="loc_us-gaap_CustomerAdvancesCurrent_393E368CFC7FA239501399F6F514160E" xlink:type="locator" />
    <link:presentationArc order="15" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_434636B63CD4F106FD6B99F6F514EF9A" xlink:to="loc_us-gaap_CustomerAdvancesCurrent_393E368CFC7FA239501399F6F514160E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherLiabilitiesCurrent" xlink:label="loc_us-gaap_OtherLiabilitiesCurrent_52B952027C663D01B5A999F6F5143ED4" xlink:type="locator" />
    <link:presentationArc order="16" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_434636B63CD4F106FD6B99F6F514EF9A" xlink:to="loc_us-gaap_OtherLiabilitiesCurrent_52B952027C663D01B5A999F6F5143ED4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LiabilitiesCurrent" xlink:label="loc_us-gaap_LiabilitiesCurrent_2136BEE84328DF004E2399F6F52428F4" xlink:type="locator" />
    <link:presentationArc order="17" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_434636B63CD4F106FD6B99F6F514EF9A" xlink:to="loc_us-gaap_LiabilitiesCurrent_2136BEE84328DF004E2399F6F52428F4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligations" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_BA54A2A77C6F38A215B199F6F524B354" xlink:type="locator" />
    <link:presentationArc order="18" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_434636B63CD4F106FD6B99F6F514EF9A" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_BA54A2A77C6F38A215B199F6F524B354" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent" xlink:label="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_B0DF5AB9A3E7CE9D8E0999F6F5241A9E" xlink:type="locator" />
    <link:presentationArc order="19" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_434636B63CD4F106FD6B99F6F514EF9A" xlink:to="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_B0DF5AB9A3E7CE9D8E0999F6F5241A9E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherLiabilitiesNoncurrent" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_6D6545C1C54385FD0D1B99F6F52444FF" xlink:type="locator" />
    <link:presentationArc order="20" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_434636B63CD4F106FD6B99F6F514EF9A" xlink:to="loc_us-gaap_OtherLiabilitiesNoncurrent_6D6545C1C54385FD0D1B99F6F52444FF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Liabilities" xlink:label="loc_us-gaap_Liabilities_5DC958120447B06099D999F6F52409A2" xlink:type="locator" />
    <link:presentationArc order="21" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_434636B63CD4F106FD6B99F6F514EF9A" xlink:to="loc_us-gaap_Liabilities_5DC958120447B06099D999F6F52409A2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PreferredStockValue" xlink:label="loc_us-gaap_PreferredStockValue_4FA8BF810EE5435A178C99F6F5248927" xlink:type="locator" />
    <link:presentationArc order="22" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_434636B63CD4F106FD6B99F6F514EF9A" xlink:to="loc_us-gaap_PreferredStockValue_4FA8BF810EE5435A178C99F6F5248927" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommonStockValue" xlink:label="loc_us-gaap_CommonStockValue_8BBBFAAF2351024500BB99F6F524D29C" xlink:type="locator" />
    <link:presentationArc order="23" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_434636B63CD4F106FD6B99F6F514EF9A" xlink:to="loc_us-gaap_CommonStockValue_8BBBFAAF2351024500BB99F6F524D29C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdditionalPaidInCapitalCommonStock" xlink:label="loc_us-gaap_AdditionalPaidInCapitalCommonStock_A5B0E64C074CDFBF712199F6F524471B" xlink:type="locator" />
    <link:presentationArc order="24" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_434636B63CD4F106FD6B99F6F514EF9A" xlink:to="loc_us-gaap_AdditionalPaidInCapitalCommonStock_A5B0E64C074CDFBF712199F6F524471B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_D29274A70AA25FF98E1999F6F524B035" xlink:type="locator" />
    <link:presentationArc order="25" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_434636B63CD4F106FD6B99F6F514EF9A" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_D29274A70AA25FF98E1999F6F524B035" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_E192C2FBB9A1A7FB6D2F99F6F524A1E4" xlink:type="locator" />
    <link:presentationArc order="26" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_434636B63CD4F106FD6B99F6F514EF9A" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_E192C2FBB9A1A7FB6D2F99F6F524A1E4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockholdersEquity" xlink:label="loc_us-gaap_StockholdersEquity_C4862F7916E0F241F14399F6F5245469" xlink:type="locator" />
    <link:presentationArc order="27" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_434636B63CD4F106FD6B99F6F514EF9A" xlink:to="loc_us-gaap_StockholdersEquity_C4862F7916E0F241F14399F6F5245469" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_AC0FCEFB191ED163ABA499F6F52422CE" xlink:type="locator" />
    <link:presentationArc order="28" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_434636B63CD4F106FD6B99F6F514EF9A" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquity_AC0FCEFB191ED163ABA499F6F52422CE" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/Recast2017And2016FinancialInformationDetails3" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountingChangesAndErrorCorrectionsAbstract" xlink:label="loc_us-gaap_AccountingChangesAndErrorCorrectionsAbstract_4C439D8813672E6B33FEA0475927A84B" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_D0B7493F7345CE09C9C8A04759275F80" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingChangesAndErrorCorrectionsAbstract_4C439D8813672E6B33FEA0475927A84B" xlink:to="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_D0B7493F7345CE09C9C8A04759275F80" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:label="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_3738FD301A1053E0E385A047592783D5" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_D0B7493F7345CE09C9C8A04759275F80" xlink:to="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_3738FD301A1053E0E385A047592783D5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TypeOfAdoptionMember" xlink:label="loc_us-gaap_TypeOfAdoptionMember_05D5143230D62078739CA0475927B03B" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_3738FD301A1053E0E385A047592783D5" xlink:to="loc_us-gaap_TypeOfAdoptionMember_05D5143230D62078739CA0475927B03B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountingStandardsUpdate201409Member" xlink:label="loc_us-gaap_AccountingStandardsUpdate201409Member_7CDD66B3F968E971ADDAA04759277149" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_TypeOfAdoptionMember_05D5143230D62078739CA0475927B03B" xlink:to="loc_us-gaap_AccountingStandardsUpdate201409Member_7CDD66B3F968E971ADDAA04759277149" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_AccountingStandardsUpdate201707Domain" xlink:label="loc_noc_AccountingStandardsUpdate201707Domain_7472E658C5C4E1E94DACA04759271F1E" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_TypeOfAdoptionMember_05D5143230D62078739CA0475927B03B" xlink:to="loc_noc_AccountingStandardsUpdate201707Domain_7472E658C5C4E1E94DACA04759271F1E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis" xlink:label="loc_us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_AD59FD01EC522C98516FA04759276294" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_D0B7493F7345CE09C9C8A04759275F80" xlink:to="loc_us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_AD59FD01EC522C98516FA04759276294" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ChangeInAccountingPrincipleMember" xlink:label="loc_us-gaap_ChangeInAccountingPrincipleMember_76941F92AED9A0E0FD16A047592777ED" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_AD59FD01EC522C98516FA04759276294" xlink:to="loc_us-gaap_ChangeInAccountingPrincipleMember_76941F92AED9A0E0FD16A047592777ED" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_AdjustmentsforchangetoDefinedBenefitPlanActuarialGainLossImmediateRecognitionasComponentinNetPeriodBenefitCostMember" xlink:label="loc_noc_AdjustmentsforchangetoDefinedBenefitPlanActuarialGainLossImmediateRecognitionasComponentinNetPeriodBenefitCostMember_B2D5AD341047FBC501EEA04759279E2A" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ChangeInAccountingPrincipleMember_76941F92AED9A0E0FD16A047592777ED" xlink:to="loc_noc_AdjustmentsforchangetoDefinedBenefitPlanActuarialGainLossImmediateRecognitionasComponentinNetPeriodBenefitCostMember_B2D5AD341047FBC501EEA04759279E2A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RestatementAxis" xlink:label="loc_srt_RestatementAxis_690D5BBE4E5B4CB1653AA04759271B74" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_D0B7493F7345CE09C9C8A04759275F80" xlink:to="loc_srt_RestatementAxis_690D5BBE4E5B4CB1653AA04759271B74" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RestatementDomain" xlink:label="loc_srt_RestatementDomain_B29C17742E1F93351939A0475927EB0E" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RestatementAxis_690D5BBE4E5B4CB1653AA04759271B74" xlink:to="loc_srt_RestatementDomain_B29C17742E1F93351939A0475927EB0E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ScenarioPreviouslyReportedMember" xlink:label="loc_srt_ScenarioPreviouslyReportedMember_A892ECC83CD1CA71DB27A0475927293E" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RestatementDomain_B29C17742E1F93351939A0475927EB0E" xlink:to="loc_srt_ScenarioPreviouslyReportedMember_A892ECC83CD1CA71DB27A0475927293E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementMember" xlink:label="loc_us-gaap_NewAccountingPronouncementMember_0A4595B19734E19C3DC2A04759277869" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RestatementDomain_B29C17742E1F93351939A0475927EB0E" xlink:to="loc_us-gaap_NewAccountingPronouncementMember_0A4595B19734E19C3DC2A04759277869" xlink:type="arc" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RestatementDomain_B29C17742E1F93351939A0475927EB0E" xlink:to="loc_us-gaap_ChangeInAccountingPrincipleMember_76941F92AED9A0E0FD16A047592777ED" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_F6C4D1D6EBDE6BD9420CA04759272D9D" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_D0B7493F7345CE09C9C8A04759275F80" xlink:to="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_F6C4D1D6EBDE6BD9420CA04759272D9D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_E8D3590162DEAFA593CEA0475927493D" xlink:type="locator" />
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_F6C4D1D6EBDE6BD9420CA04759272D9D" xlink:to="loc_us-gaap_NetIncomeLoss_E8D3590162DEAFA593CEA0475927493D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_18FBD724E40C2CB78425A047592788FB" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_F6C4D1D6EBDE6BD9420CA04759272D9D" xlink:to="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_18FBD724E40C2CB78425A047592788FB" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DepreciationDepletionAndAmortization" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_B25F8A6AEF6071BFC8D9A0475927DFB6" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_F6C4D1D6EBDE6BD9420CA04759272D9D" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_B25F8A6AEF6071BFC8D9A0475927DFB6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanActuarialGainLossImmediateRecognitionAsComponentInNetPeriodicBenefitCostCredit" xlink:label="loc_us-gaap_DefinedBenefitPlanActuarialGainLossImmediateRecognitionAsComponentInNetPeriodicBenefitCostCredit_FC97B07A36DF7F2E36DFA04759278774" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_F6C4D1D6EBDE6BD9420CA04759272D9D" xlink:to="loc_us-gaap_DefinedBenefitPlanActuarialGainLossImmediateRecognitionAsComponentInNetPeriodicBenefitCostCredit_FC97B07A36DF7F2E36DFA04759278774" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredIncomeTaxesAndTaxCredits" xlink:label="loc_us-gaap_DeferredIncomeTaxesAndTaxCredits_561E728526022A12AB91A04759276329" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_F6C4D1D6EBDE6BD9420CA04759272D9D" xlink:to="loc_us-gaap_DeferredIncomeTaxesAndTaxCredits_561E728526022A12AB91A04759276329" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncreaseDecreaseInOperatingAssetsAbstract" xlink:label="loc_us-gaap_IncreaseDecreaseInOperatingAssetsAbstract_1BD6766F716040EE43C9A0475927C4AC" xlink:type="locator" />
    <link:presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_F6C4D1D6EBDE6BD9420CA04759272D9D" xlink:to="loc_us-gaap_IncreaseDecreaseInOperatingAssetsAbstract_1BD6766F716040EE43C9A0475927C4AC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensation" xlink:label="loc_us-gaap_ShareBasedCompensation_A3C167592C97ED72F83FA04759272C1D" xlink:type="locator" />
    <link:presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_F6C4D1D6EBDE6BD9420CA04759272D9D" xlink:to="loc_us-gaap_ShareBasedCompensation_A3C167592C97ED72F83FA04759272C1D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_D80F44728737BA57358AA047592786D6" xlink:type="locator" />
    <link:presentationArc order="8" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_F6C4D1D6EBDE6BD9420CA04759272D9D" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_D80F44728737BA57358AA047592786D6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncreaseDecreaseInUnbilledReceivables" xlink:label="loc_us-gaap_IncreaseDecreaseInUnbilledReceivables_BB5203676E0DE3577FE1A04759275F57" xlink:type="locator" />
    <link:presentationArc order="9" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_F6C4D1D6EBDE6BD9420CA04759272D9D" xlink:to="loc_us-gaap_IncreaseDecreaseInUnbilledReceivables_BB5203676E0DE3577FE1A04759275F57" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncreaseDecreaseInInventories" xlink:label="loc_us-gaap_IncreaseDecreaseInInventories_36BED97B0FF40406F289A04759274996" xlink:type="locator" />
    <link:presentationArc order="10" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_F6C4D1D6EBDE6BD9420CA04759272D9D" xlink:to="loc_us-gaap_IncreaseDecreaseInInventories_36BED97B0FF40406F289A04759274996" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" xlink:label="loc_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_306EA899887DBA854B86A04759273D84" xlink:type="locator" />
    <link:presentationArc order="11" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_F6C4D1D6EBDE6BD9420CA04759272D9D" xlink:to="loc_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_306EA899887DBA854B86A04759273D84" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_B487BCAFF57A81EF0E32A04759274247" xlink:type="locator" />
    <link:presentationArc order="12" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_F6C4D1D6EBDE6BD9420CA04759272D9D" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_B487BCAFF57A81EF0E32A04759274247" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncreaseDecreaseInPensionAndPostretirementObligations" xlink:label="loc_us-gaap_IncreaseDecreaseInPensionAndPostretirementObligations_0ED478DC30515D635428A04759274B0D" xlink:type="locator" />
    <link:presentationArc order="13" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_F6C4D1D6EBDE6BD9420CA04759272D9D" xlink:to="loc_us-gaap_IncreaseDecreaseInPensionAndPostretirementObligations_0ED478DC30515D635428A04759274B0D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherNoncashIncomeExpense" xlink:label="loc_us-gaap_OtherNoncashIncomeExpense_BB4DEAAFB3C4EF5A4090A047592779BC" xlink:type="locator" />
    <link:presentationArc order="14" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_F6C4D1D6EBDE6BD9420CA04759272D9D" xlink:to="loc_us-gaap_OtherNoncashIncomeExpense_BB4DEAAFB3C4EF5A4090A047592779BC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable" xlink:label="loc_us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable_E68C67DCB2A8AFE0648AA0475927170F" xlink:type="locator" />
    <link:presentationArc order="15" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_F6C4D1D6EBDE6BD9420CA04759272D9D" xlink:to="loc_us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable_E68C67DCB2A8AFE0648AA0475927170F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_671E33B8A15D65C79EA1A0475927E54B" xlink:type="locator" />
    <link:presentationArc order="16" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_F6C4D1D6EBDE6BD9420CA04759272D9D" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_671E33B8A15D65C79EA1A0475927E54B" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/Recast2017And2016FinancialInformationDetails4" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountingChangesAndErrorCorrectionsAbstract" xlink:label="loc_us-gaap_AccountingChangesAndErrorCorrectionsAbstract_C1665A31D6DC14444E509BA8FF09F72F" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_99692020E333CAC934D29BA8FF0A3BB5" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingChangesAndErrorCorrectionsAbstract_C1665A31D6DC14444E509BA8FF09F72F" xlink:to="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_99692020E333CAC934D29BA8FF0A3BB5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_A5F098EF3B17ACD80A189BA8FF0AD965" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_99692020E333CAC934D29BA8FF0A3BB5" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_A5F098EF3B17ACD80A189BA8FF0AD965" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaap_EquityComponentDomain_C810FC1076C1537B10269BA8FF0A6CCE" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_A5F098EF3B17ACD80A189BA8FF0AD965" xlink:to="loc_us-gaap_EquityComponentDomain_C810FC1076C1537B10269BA8FF0A6CCE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetainedEarningsMember" xlink:label="loc_us-gaap_RetainedEarningsMember_2C19D7FE9DFC2AC2DE2B9BA8FF0BAB85" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquityComponentDomain_C810FC1076C1537B10269BA8FF0A6CCE" xlink:to="loc_us-gaap_RetainedEarningsMember_2C19D7FE9DFC2AC2DE2B9BA8FF0BAB85" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_C8020E23BD1B7AACE24D9BA8FF0BC88C" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquityComponentDomain_C810FC1076C1537B10269BA8FF0A6CCE" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_C8020E23BD1B7AACE24D9BA8FF0BC88C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:label="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_79EF5AB63828A9160D8D9BA8FF0B5FB1" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_99692020E333CAC934D29BA8FF0A3BB5" xlink:to="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_79EF5AB63828A9160D8D9BA8FF0B5FB1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TypeOfAdoptionMember" xlink:label="loc_us-gaap_TypeOfAdoptionMember_E780244F712185D4A9DC9BA8FF0B7E17" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_79EF5AB63828A9160D8D9BA8FF0B5FB1" xlink:to="loc_us-gaap_TypeOfAdoptionMember_E780244F712185D4A9DC9BA8FF0B7E17" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountingStandardsUpdate201409Member" xlink:label="loc_us-gaap_AccountingStandardsUpdate201409Member_E4D9832F167467CC9BB29BA8FF0C7FC1" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_TypeOfAdoptionMember_E780244F712185D4A9DC9BA8FF0B7E17" xlink:to="loc_us-gaap_AccountingStandardsUpdate201409Member_E4D9832F167467CC9BB29BA8FF0C7FC1" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_AccountingStandardsUpdate201707Domain" xlink:label="loc_noc_AccountingStandardsUpdate201707Domain_555E342DCCE5B3DA104B9BA8FF0C3048" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_TypeOfAdoptionMember_E780244F712185D4A9DC9BA8FF0B7E17" xlink:to="loc_noc_AccountingStandardsUpdate201707Domain_555E342DCCE5B3DA104B9BA8FF0C3048" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis" xlink:label="loc_us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_DA067BD5EAC29106436F9BA8FF0DE6AE" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_99692020E333CAC934D29BA8FF0A3BB5" xlink:to="loc_us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_DA067BD5EAC29106436F9BA8FF0DE6AE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ChangeInAccountingPrincipleMember" xlink:label="loc_us-gaap_ChangeInAccountingPrincipleMember_3D71A97671F8383B34219BA8FF0D566E" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_DA067BD5EAC29106436F9BA8FF0DE6AE" xlink:to="loc_us-gaap_ChangeInAccountingPrincipleMember_3D71A97671F8383B34219BA8FF0D566E" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_AdjustmentsforchangetoDefinedBenefitPlanActuarialGainLossImmediateRecognitionasComponentinNetPeriodBenefitCostMember" xlink:label="loc_noc_AdjustmentsforchangetoDefinedBenefitPlanActuarialGainLossImmediateRecognitionasComponentinNetPeriodBenefitCostMember_57D3DB9D7E0B00445EA29BA8FF0EDF14" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ChangeInAccountingPrincipleMember_3D71A97671F8383B34219BA8FF0D566E" xlink:to="loc_noc_AdjustmentsforchangetoDefinedBenefitPlanActuarialGainLossImmediateRecognitionasComponentinNetPeriodBenefitCostMember_57D3DB9D7E0B00445EA29BA8FF0EDF14" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RestatementAxis" xlink:label="loc_srt_RestatementAxis_6488C4013526B1A5BEFC9BA8FF0E0F2B" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_99692020E333CAC934D29BA8FF0A3BB5" xlink:to="loc_srt_RestatementAxis_6488C4013526B1A5BEFC9BA8FF0E0F2B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RestatementDomain" xlink:label="loc_srt_RestatementDomain_1D16F1191D13F1582B419BA8FF0F57DA" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RestatementAxis_6488C4013526B1A5BEFC9BA8FF0E0F2B" xlink:to="loc_srt_RestatementDomain_1D16F1191D13F1582B419BA8FF0F57DA" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ScenarioPreviouslyReportedMember" xlink:label="loc_srt_ScenarioPreviouslyReportedMember_05F0C34F360644A36FC19BA8FF106D1D" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RestatementDomain_1D16F1191D13F1582B419BA8FF0F57DA" xlink:to="loc_srt_ScenarioPreviouslyReportedMember_05F0C34F360644A36FC19BA8FF106D1D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementMember" xlink:label="loc_us-gaap_NewAccountingPronouncementMember_2A4E21F642D0B233E0FE9BA8FF100F97" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RestatementDomain_1D16F1191D13F1582B419BA8FF0F57DA" xlink:to="loc_us-gaap_NewAccountingPronouncementMember_2A4E21F642D0B233E0FE9BA8FF100F97" xlink:type="arc" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RestatementDomain_1D16F1191D13F1582B419BA8FF0F57DA" xlink:to="loc_us-gaap_ChangeInAccountingPrincipleMember_3D71A97671F8383B34219BA8FF0D566E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_712AC7DFE3AFEFE27CBA9BA8FF118C00" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_99692020E333CAC934D29BA8FF0A3BB5" xlink:to="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_712AC7DFE3AFEFE27CBA9BA8FF118C00" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockholdersEquity" xlink:label="loc_us-gaap_StockholdersEquity_18C82E1AD7004CAAAF639BA8FF1192F3" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_712AC7DFE3AFEFE27CBA9BA8FF118C00" xlink:to="loc_us-gaap_StockholdersEquity_18C82E1AD7004CAAAF639BA8FF1192F3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation_BE49E5742D43051C447F9BA8FF128024" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_712AC7DFE3AFEFE27CBA9BA8FF118C00" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation_BE49E5742D43051C447F9BA8FF128024" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockRepurchasedAndRetiredDuringPeriodValue" xlink:label="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodValue_EA24EB716E735F8DB27D9BA8FF12DB65" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_712AC7DFE3AFEFE27CBA9BA8FF118C00" xlink:to="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodValue_EA24EB716E735F8DB27D9BA8FF12DB65" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_6FC9075B4DE92085F16C9BA8FF12745C" xlink:type="locator" />
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_712AC7DFE3AFEFE27CBA9BA8FF118C00" xlink:to="loc_us-gaap_NetIncomeLoss_6FC9075B4DE92085F16C9BA8FF12745C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DividendsCommonStock" xlink:label="loc_us-gaap_DividendsCommonStock_2BE8F77BD4499B9486369BA8FF132F1D" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_712AC7DFE3AFEFE27CBA9BA8FF118C00" xlink:to="loc_us-gaap_DividendsCommonStock_2BE8F77BD4499B9486369BA8FF132F1D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_71C1553A5F861E842DC19BA8FF13CDEC" xlink:type="locator" />
    <link:presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_712AC7DFE3AFEFE27CBA9BA8FF118C00" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_71C1553A5F861E842DC19BA8FF13CDEC" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/Recast2017And2016FinancialInformationTables" xlink:type="extended">
    <link:loc xlink:href="noc-20181231.xsd#noc_ErrorCorrectionsandPriorPeriodAdjustmentsRestatementsAbstract" xlink:label="loc_noc_ErrorCorrectionsandPriorPeriodAdjustmentsRestatementsAbstract_2A4BBC67DB5FC97CB3479BDA4CF13D7D" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfErrorCorrectionsAndPriorPeriodAdjustmentRestatementTable" xlink:label="loc_us-gaap_ScheduleOfErrorCorrectionsAndPriorPeriodAdjustmentRestatementTable_EE3EE33FCACB0F842AC69BDA4F28B555" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_noc_ErrorCorrectionsandPriorPeriodAdjustmentsRestatementsAbstract_2A4BBC67DB5FC97CB3479BDA4CF13D7D" xlink:to="loc_us-gaap_ScheduleOfErrorCorrectionsAndPriorPeriodAdjustmentRestatementTable_EE3EE33FCACB0F842AC69BDA4F28B555" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementByRestatementPeriodAndAmountAxis" xlink:label="loc_us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementByRestatementPeriodAndAmountAxis_60D224CD4471F676E8249BDA4F288036" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfErrorCorrectionsAndPriorPeriodAdjustmentRestatementTable_EE3EE33FCACB0F842AC69BDA4F28B555" xlink:to="loc_us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementByRestatementPeriodAndAmountAxis_60D224CD4471F676E8249BDA4F288036" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdjustmentsForErrorCorrectionDomain" xlink:label="loc_us-gaap_AdjustmentsForErrorCorrectionDomain_B2EE81E1262F04F653F49BDA4F291390" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementByRestatementPeriodAndAmountAxis_60D224CD4471F676E8249BDA4F288036" xlink:to="loc_us-gaap_AdjustmentsForErrorCorrectionDomain_B2EE81E1262F04F653F49BDA4F291390" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RestatementAxis" xlink:label="loc_srt_RestatementAxis_9D5F324148746AE369689BDA4F2A5A18" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfErrorCorrectionsAndPriorPeriodAdjustmentRestatementTable_EE3EE33FCACB0F842AC69BDA4F28B555" xlink:to="loc_srt_RestatementAxis_9D5F324148746AE369689BDA4F2A5A18" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RestatementDomain" xlink:label="loc_srt_RestatementDomain_7231642C56DED30AB7D29BDA4F2AF661" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RestatementAxis_9D5F324148746AE369689BDA4F2A5A18" xlink:to="loc_srt_RestatementDomain_7231642C56DED30AB7D29BDA4F2AF661" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementLineItems" xlink:label="loc_us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementLineItems_072073C023D7AC91F09B9BDA4F2BACE4" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfErrorCorrectionsAndPriorPeriodAdjustmentRestatementTable_EE3EE33FCACB0F842AC69BDA4F28B555" xlink:to="loc_us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementLineItems_072073C023D7AC91F09B9BDA4F2BACE4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfNewAccountingPronouncementsAndChangesInAccountingPrinciplesTextBlock" xlink:label="loc_us-gaap_ScheduleOfNewAccountingPronouncementsAndChangesInAccountingPrinciplesTextBlock_59CDB6E490E48BFDE0DC9BDA4F38FCA4" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementLineItems_072073C023D7AC91F09B9BDA4F2BACE4" xlink:to="loc_us-gaap_ScheduleOfNewAccountingPronouncementsAndChangesInAccountingPrinciplesTextBlock_59CDB6E490E48BFDE0DC9BDA4F38FCA4" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/RetirementBenefits" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:label="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_7B3554161A5096FD2D53977AA5390826" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock" xlink:label="loc_us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock_6282E632AEEA202C6E66977AA53A5568" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_7B3554161A5096FD2D53977AA5390826" xlink:to="loc_us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock_6282E632AEEA202C6E66977AA53A5568" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/RetirementBenefitsDetails1" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:label="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_1E14FA8C08E5BC83B32D9A00BFF084B9" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_5A9C8D5B6FC6A663D22A9A00BFF0AA84" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_1E14FA8C08E5BC83B32D9A00BFF084B9" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_5A9C8D5B6FC6A663D22A9A00BFF0AA84" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_E1F48A8F3E3A1FB5193B9A00BFF0CCB6" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_5A9C8D5B6FC6A663D22A9A00BFF0AA84" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_E1F48A8F3E3A1FB5193B9A00BFF0CCB6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_9C7A7300DE6635F086EE9A00BFF06F7A" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_E1F48A8F3E3A1FB5193B9A00BFF0CCB6" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_9C7A7300DE6635F086EE9A00BFF06F7A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_E0FD8A3A6BB6EE4E42BB9A00BFF071C2" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_9C7A7300DE6635F086EE9A00BFF06F7A" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_E0FD8A3A6BB6EE4E42BB9A00BFF071C2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_47CCD6E0887D36B021E49A00BFF0A77C" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_9C7A7300DE6635F086EE9A00BFF06F7A" xlink:to="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_47CCD6E0887D36B021E49A00BFF0A77C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_41950EE768FB314A77CE9A00BFF0DFE3" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_5A9C8D5B6FC6A663D22A9A00BFF0AA84" xlink:to="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_41950EE768FB314A77CE9A00BFF0DFE3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract" xlink:label="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_7EFB060C281A1EADA3D89A00BFF0E1E8" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_41950EE768FB314A77CE9A00BFF0DFE3" xlink:to="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_7EFB060C281A1EADA3D89A00BFF0E1E8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanServiceCost" xlink:label="loc_us-gaap_DefinedBenefitPlanServiceCost_9F9D66111AE8D6A26F589A00BFF0A485" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_7EFB060C281A1EADA3D89A00BFF0E1E8" xlink:to="loc_us-gaap_DefinedBenefitPlanServiceCost_9F9D66111AE8D6A26F589A00BFF0A485" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanInterestCost" xlink:label="loc_us-gaap_DefinedBenefitPlanInterestCost_22EA70E31171EE06B8269A00BFF01FFB" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_7EFB060C281A1EADA3D89A00BFF0E1E8" xlink:to="loc_us-gaap_DefinedBenefitPlanInterestCost_22EA70E31171EE06B8269A00BFF01FFB" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_CBA9AE8106EC9FA146949A00BFF0A7C3" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_7EFB060C281A1EADA3D89A00BFF0E1E8" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_CBA9AE8106EC9FA146949A00BFF0A7C3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit" xlink:label="loc_us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit_67DB128CF2257DEC1DE29A00BFF03522" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_7EFB060C281A1EADA3D89A00BFF0E1E8" xlink:to="loc_us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit_67DB128CF2257DEC1DE29A00BFF03522" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanActuarialGainLossImmediateRecognitionAsComponentInNetPeriodicBenefitCostCredit" xlink:label="loc_us-gaap_DefinedBenefitPlanActuarialGainLossImmediateRecognitionAsComponentInNetPeriodicBenefitCostCredit_8A93680A7B4342D4094D9A1F9F7F9E1D" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_7EFB060C281A1EADA3D89A00BFF0E1E8" xlink:to="loc_us-gaap_DefinedBenefitPlanActuarialGainLossImmediateRecognitionAsComponentInNetPeriodicBenefitCostCredit_8A93680A7B4342D4094D9A1F9F7F9E1D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanOtherCosts" xlink:label="loc_us-gaap_DefinedBenefitPlanOtherCosts_A81D33821219FD49C6299A00BFF01329" xlink:type="locator" />
    <link:presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_7EFB060C281A1EADA3D89A00BFF0E1E8" xlink:to="loc_us-gaap_DefinedBenefitPlanOtherCosts_A81D33821219FD49C6299A00BFF01329" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost" xlink:label="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_84E0C0336B0B20C5FD0C9A00BFF04E15" xlink:type="locator" />
    <link:presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_7EFB060C281A1EADA3D89A00BFF0E1E8" xlink:to="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_84E0C0336B0B20C5FD0C9A00BFF04E15" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/RetirementBenefitsDetails2" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:label="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_24AED7B5C442DEB0E3419D25D9C2B2AF" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8C2B2C9D4E69A0838DB89D25D9C21A94" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_24AED7B5C442DEB0E3419D25D9C2B2AF" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8C2B2C9D4E69A0838DB89D25D9C21A94" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_E60E29AE249276D507D49D25D9C24DAE" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8C2B2C9D4E69A0838DB89D25D9C21A94" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_E60E29AE249276D507D49D25D9C24DAE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_6279A7C9D07E7AE6C8949D25D9C220B5" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_E60E29AE249276D507D49D25D9C24DAE" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_6279A7C9D07E7AE6C8949D25D9C220B5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_F540FF6519C373C6A80E9D25D9C23549" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_6279A7C9D07E7AE6C8949D25D9C220B5" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_F540FF6519C373C6A80E9D25D9C23549" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_0071FA7E5B5BCF61F5CB9D25D9C2FF3B" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_6279A7C9D07E7AE6C8949D25D9C220B5" xlink:to="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_0071FA7E5B5BCF61F5CB9D25D9C2FF3B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_34B3B95E09B1349B96BF9D25D9C2F4C3" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8C2B2C9D4E69A0838DB89D25D9C21A94" xlink:to="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_34B3B95E09B1349B96BF9D25D9C2F4C3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeAbstract" xlink:label="loc_us-gaap_DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeAbstract_85BA473F5C7EEE5FE3A99D25D9C22596" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_34B3B95E09B1349B96BF9D25D9C2F4C3" xlink:to="loc_us-gaap_DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeAbstract_85BA473F5C7EEE5FE3A99D25D9C22596" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_AmortizationOfPriorServiceCostAndLossesAbstract" xlink:label="loc_noc_AmortizationOfPriorServiceCostAndLossesAbstract_8A4FA3B83E88E83E6E309D25D9C2A0AB" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeAbstract_85BA473F5C7EEE5FE3A99D25D9C22596" xlink:to="loc_noc_AmortizationOfPriorServiceCostAndLossesAbstract_8A4FA3B83E88E83E6E309D25D9C2A0AB" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax_10E647979D40CDF9E4129D25D9C272A7" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_noc_AmortizationOfPriorServiceCostAndLossesAbstract_8A4FA3B83E88E83E6E309D25D9C2A0AB" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax_10E647979D40CDF9E4129D25D9C272A7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax_9469CAA57E6687808F5B9D25D9C20071" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeAbstract_85BA473F5C7EEE5FE3A99D25D9C22596" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax_9469CAA57E6687808F5B9D25D9C20071" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_FD7F568BE9E2E04AC58F9D25D9C2FF39" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeAbstract_85BA473F5C7EEE5FE3A99D25D9C22596" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_FD7F568BE9E2E04AC58F9D25D9C2FF39" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/RetirementBenefitsDetails3" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:label="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_D1590E3AC05BBCC984AE9A750990978A" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_81BD9CD49355A5AEAC2E9A7509900B2E" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_D1590E3AC05BBCC984AE9A750990978A" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_81BD9CD49355A5AEAC2E9A7509900B2E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_79F47021245B616B0BE69A7509902006" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_81BD9CD49355A5AEAC2E9A7509900B2E" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_79F47021245B616B0BE69A7509902006" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_EA74A483E120374A596C9A75099076A4" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_79F47021245B616B0BE69A7509902006" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_EA74A483E120374A596C9A75099076A4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_D8375564387E7C4C63E39A750990C392" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_EA74A483E120374A596C9A75099076A4" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_D8375564387E7C4C63E39A750990C392" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_269B89B30184DD0AFF0C9A7509900134" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_EA74A483E120374A596C9A75099076A4" xlink:to="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_269B89B30184DD0AFF0C9A7509900134" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_17EF9E4FF710DFAB0EA09A7509909BED" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_81BD9CD49355A5AEAC2E9A7509900B2E" xlink:to="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_17EF9E4FF710DFAB0EA09A7509909BED" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward" xlink:label="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_379D0BD769B45106B2839A75099020D4" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_17EF9E4FF710DFAB0EA09A7509909BED" xlink:to="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_379D0BD769B45106B2839A75099020D4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanBenefitObligation" xlink:label="loc_us-gaap_DefinedBenefitPlanBenefitObligation_0BF43B6D8B6B05DED0A69A750990C918" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_379D0BD769B45106B2839A75099020D4" xlink:to="loc_us-gaap_DefinedBenefitPlanBenefitObligation_0BF43B6D8B6B05DED0A69A750990C918" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanServiceCost" xlink:label="loc_us-gaap_DefinedBenefitPlanServiceCost_BE3E500B2DD6DF199A279A7509908D83" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_379D0BD769B45106B2839A75099020D4" xlink:to="loc_us-gaap_DefinedBenefitPlanServiceCost_BE3E500B2DD6DF199A279A7509908D83" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanInterestCost" xlink:label="loc_us-gaap_DefinedBenefitPlanInterestCost_D604E41DDA423389218C9A7509904C86" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_379D0BD769B45106B2839A75099020D4" xlink:to="loc_us-gaap_DefinedBenefitPlanInterestCost_D604E41DDA423389218C9A7509904C86" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanBenefitObligationContributionsByPlanParticipant" xlink:label="loc_us-gaap_DefinedBenefitPlanBenefitObligationContributionsByPlanParticipant_F5FE9EB02875EF0DE77C9A7509903D0B" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_379D0BD769B45106B2839A75099020D4" xlink:to="loc_us-gaap_DefinedBenefitPlanBenefitObligationContributionsByPlanParticipant_F5FE9EB02875EF0DE77C9A7509903D0B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanActuarialGainLoss" xlink:label="loc_us-gaap_DefinedBenefitPlanActuarialGainLoss_EA4072616641CB372C239A7509907D01" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_379D0BD769B45106B2839A75099020D4" xlink:to="loc_us-gaap_DefinedBenefitPlanActuarialGainLoss_EA4072616641CB372C239A7509907D01" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanBenefitObligationBenefitsPaid" xlink:label="loc_us-gaap_DefinedBenefitPlanBenefitObligationBenefitsPaid_0B83ED76600D3D78DF029A7509905C36" xlink:type="locator" />
    <link:presentationArc order="6" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_379D0BD769B45106B2839A75099020D4" xlink:to="loc_us-gaap_DefinedBenefitPlanBenefitObligationBenefitsPaid_0B83ED76600D3D78DF029A7509905C36" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanBusinessCombinationsAndAcquisitionsBenefitObligation" xlink:label="loc_us-gaap_DefinedBenefitPlanBusinessCombinationsAndAcquisitionsBenefitObligation_509C51851CF2CE1946B39A750990BB0B" xlink:type="locator" />
    <link:presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_379D0BD769B45106B2839A75099020D4" xlink:to="loc_us-gaap_DefinedBenefitPlanBusinessCombinationsAndAcquisitionsBenefitObligation_509C51851CF2CE1946B39A750990BB0B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanOtherChanges" xlink:label="loc_us-gaap_DefinedBenefitPlanOtherChanges_AEB9473F33AD67FC259F9A7509901696" xlink:type="locator" />
    <link:presentationArc order="8" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_379D0BD769B45106B2839A75099020D4" xlink:to="loc_us-gaap_DefinedBenefitPlanOtherChanges_AEB9473F33AD67FC259F9A7509901696" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanBenefitObligation" xlink:label="loc_us-gaap_DefinedBenefitPlanBenefitObligation_CFA625B3AD4DE91E7AC89A7509907FF1" xlink:type="locator" />
    <link:presentationArc order="9" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_379D0BD769B45106B2839A75099020D4" xlink:to="loc_us-gaap_DefinedBenefitPlanBenefitObligation_CFA625B3AD4DE91E7AC89A7509907FF1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward" xlink:label="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_EE01697C12BE22BFD77A9A750990A5CB" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_17EF9E4FF710DFAB0EA09A7509909BED" xlink:to="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_EE01697C12BE22BFD77A9A750990A5CB" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanFairValueOfPlanAssets" xlink:label="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_215C782FAC5FB3846CFD9A7509906FD9" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_EE01697C12BE22BFD77A9A750990A5CB" xlink:to="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_215C782FAC5FB3846CFD9A7509906FD9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets" xlink:label="loc_us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets_C0A081921A469BC972599A750990DFF9" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_EE01697C12BE22BFD77A9A750990A5CB" xlink:to="loc_us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets_C0A081921A469BC972599A750990DFF9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanContributionsByEmployer" xlink:label="loc_us-gaap_DefinedBenefitPlanContributionsByEmployer_91339A000FF0237775909A7509901A25" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_EE01697C12BE22BFD77A9A750990A5CB" xlink:to="loc_us-gaap_DefinedBenefitPlanContributionsByEmployer_91339A000FF0237775909A7509901A25" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanPlanAssetsContributionsByPlanParticipant" xlink:label="loc_us-gaap_DefinedBenefitPlanPlanAssetsContributionsByPlanParticipant_50CDD3A85F63A0E677639A750990D7DC" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_EE01697C12BE22BFD77A9A750990A5CB" xlink:to="loc_us-gaap_DefinedBenefitPlanPlanAssetsContributionsByPlanParticipant_50CDD3A85F63A0E677639A750990D7DC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanPlanAssetsBenefitsPaid" xlink:label="loc_us-gaap_DefinedBenefitPlanPlanAssetsBenefitsPaid_EEA0731C7918ED3325BF9A750990D517" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_EE01697C12BE22BFD77A9A750990A5CB" xlink:to="loc_us-gaap_DefinedBenefitPlanPlanAssetsBenefitsPaid_EEA0731C7918ED3325BF9A750990D517" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanBusinessCombinationsAndAcquisitionsPlanAssets" xlink:label="loc_us-gaap_DefinedBenefitPlanBusinessCombinationsAndAcquisitionsPlanAssets_A99B2CF2096456B89E9D9A750990E384" xlink:type="locator" />
    <link:presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_EE01697C12BE22BFD77A9A750990A5CB" xlink:to="loc_us-gaap_DefinedBenefitPlanBusinessCombinationsAndAcquisitionsPlanAssets_A99B2CF2096456B89E9D9A750990E384" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_DefinedBenefitPlanOtherChangeInPlanAssets" xlink:label="loc_noc_DefinedBenefitPlanOtherChangeInPlanAssets_E6FA3F41B3B416048C7C9A75099064D7" xlink:type="locator" />
    <link:presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_EE01697C12BE22BFD77A9A750990A5CB" xlink:to="loc_noc_DefinedBenefitPlanOtherChangeInPlanAssets_E6FA3F41B3B416048C7C9A75099064D7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanFairValueOfPlanAssets" xlink:label="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_16DE6CF6DA750B10749D9A7509903990" xlink:type="locator" />
    <link:presentationArc order="8" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_EE01697C12BE22BFD77A9A750990A5CB" xlink:to="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_16DE6CF6DA750B10749D9A7509903990" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanFundedStatusOfPlan" xlink:label="loc_us-gaap_DefinedBenefitPlanFundedStatusOfPlan_AD45F47858DD12526F089A7509904DE8" xlink:type="locator" />
    <link:presentationArc order="9" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_EE01697C12BE22BFD77A9A750990A5CB" xlink:to="loc_us-gaap_DefinedBenefitPlanFundedStatusOfPlan_AD45F47858DD12526F089A7509904DE8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract" xlink:label="loc_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract_0ACEAAE8BF96F53E04699A75099009F4" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_17EF9E4FF710DFAB0EA09A7509909BED" xlink:to="loc_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract_0ACEAAE8BF96F53E04699A75099009F4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent" xlink:label="loc_us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent_4654341FBF12DF7929659A7509904B22" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract_0ACEAAE8BF96F53E04699A75099009F4" xlink:to="loc_us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent_4654341FBF12DF7929659A7509904B22" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities" xlink:label="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities_8871F818C63DB3D4E5BE9A7509904273" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract_0ACEAAE8BF96F53E04699A75099009F4" xlink:to="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities_8871F818C63DB3D4E5BE9A7509904273" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent" xlink:label="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_B6318B5E9EBE077EBF4A9A7509907334" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract_0ACEAAE8BF96F53E04699A75099009F4" xlink:to="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_B6318B5E9EBE077EBF4A9A7509907334" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/RetirementBenefitsDetails4" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:label="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_425CC3DA16B274B8FCB89A7505F63CC2" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAbstract" xlink:label="loc_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAbstract_BF564D222C29AE21FA199A7505F69FCC" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_425CC3DA16B274B8FCB89A7505F63CC2" xlink:to="loc_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAbstract_BF564D222C29AE21FA199A7505F69FCC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation" xlink:label="loc_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation_55A7FAFE2F31E853778F9A7505F6BA6A" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAbstract_BF564D222C29AE21FA199A7505F69FCC" xlink:to="loc_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation_55A7FAFE2F31E853778F9A7505F6BA6A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation" xlink:label="loc_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation_FF3FD01118452AE38ED29A7505F6CC3D" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAbstract_BF564D222C29AE21FA199A7505F69FCC" xlink:to="loc_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation_FF3FD01118452AE38ED29A7505F6CC3D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets" xlink:label="loc_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets_E16E8A85C6D3A48CC08C9A7505F688D1" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAbstract_BF564D222C29AE21FA199A7505F69FCC" xlink:to="loc_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets_E16E8A85C6D3A48CC08C9A7505F688D1" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/RetirementBenefitsDetails5" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:label="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_5BE5A20DC11081D4501F9A750356BF1E" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_964A89A646C532022E869A7503560CA3" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_5BE5A20DC11081D4501F9A750356BF1E" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_964A89A646C532022E869A7503560CA3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_30E8C8697003A3433AD59A750356B49E" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_964A89A646C532022E869A7503560CA3" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_30E8C8697003A3433AD59A750356B49E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_7A1CF80EB612BE20867C9A7503565923" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_30E8C8697003A3433AD59A750356B49E" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_7A1CF80EB612BE20867C9A7503565923" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_BenefitObligationMember" xlink:label="loc_noc_BenefitObligationMember_1E43F4843D148AB5863F9A7503563029" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_7A1CF80EB612BE20867C9A7503565923" xlink:to="loc_noc_BenefitObligationMember_1E43F4843D148AB5863F9A7503563029" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_5181683C54DD2B1050C39A750356D4A3" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_7A1CF80EB612BE20867C9A7503565923" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_5181683C54DD2B1050C39A750356D4A3" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_PostretirementBenefitCostMember" xlink:label="loc_noc_PostretirementBenefitCostMember_A6770A702B6F380BF3309A750356A152" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_7A1CF80EB612BE20867C9A7503565923" xlink:to="loc_noc_PostretirementBenefitCostMember_A6770A702B6F380BF3309A750356A152" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_451FF0714A077B54DD289A750356A7C4" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_7A1CF80EB612BE20867C9A7503565923" xlink:to="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_451FF0714A077B54DD289A750356A7C4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_529FA33ACA7C525533EE9A7503563D60" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_964A89A646C532022E869A7503560CA3" xlink:to="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_529FA33ACA7C525533EE9A7503563D60" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear" xlink:label="loc_us-gaap_DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear_69A8C2D17C3B16C3A1589A7503564F3E" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_529FA33ACA7C525533EE9A7503563D60" xlink:to="loc_us-gaap_DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear_69A8C2D17C3B16C3A1589A7503564F3E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate1" xlink:label="loc_us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate1_EF0F46D6ADFEB606136F9A75035677AA" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_529FA33ACA7C525533EE9A7503563D60" xlink:to="loc_us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate1_EF0F46D6ADFEB606136F9A75035677AA" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanYearHealthCareCostTrendRateReachesUltimateTrendRate" xlink:label="loc_us-gaap_DefinedBenefitPlanYearHealthCareCostTrendRateReachesUltimateTrendRate_C176677D597F67F5F0589A750356442C" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_529FA33ACA7C525533EE9A7503563D60" xlink:to="loc_us-gaap_DefinedBenefitPlanYearHealthCareCostTrendRateReachesUltimateTrendRate_C176677D597F67F5F0589A750356442C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract" xlink:label="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract_577F80DC3D9523F796B59A75035664EA" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_529FA33ACA7C525533EE9A7503563D60" xlink:to="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract_577F80DC3D9523F796B59A75035664EA" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate_9FD93E8B77D1C17FDDE59A750356DA9A" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract_577F80DC3D9523F796B59A75035664EA" xlink:to="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate_9FD93E8B77D1C17FDDE59A750356DA9A" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_DefinedBenefitPlanBenefitObligationCashBalanceCreditingRateAssumedforNextFiscalYear" xlink:label="loc_noc_DefinedBenefitPlanBenefitObligationCashBalanceCreditingRateAssumedforNextFiscalYear_D02A6B924C741459FFA09A750356072F" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract_577F80DC3D9523F796B59A75035664EA" xlink:to="loc_noc_DefinedBenefitPlanBenefitObligationCashBalanceCreditingRateAssumedforNextFiscalYear_D02A6B924C741459FFA09A750356072F" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_DefinedBenefitPlanBenefitObligationUltimateCashBalanceCreditingRate" xlink:label="loc_noc_DefinedBenefitPlanBenefitObligationUltimateCashBalanceCreditingRate_1FD02C163CA387700BDA9A7503569366" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract_577F80DC3D9523F796B59A75035664EA" xlink:to="loc_noc_DefinedBenefitPlanBenefitObligationUltimateCashBalanceCreditingRate_1FD02C163CA387700BDA9A7503569366" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_DefinedBenefitPlanBenefitObligationCashBalanceCreditingRateYearthatratereachesultimaterate" xlink:label="loc_noc_DefinedBenefitPlanBenefitObligationCashBalanceCreditingRateYearthatratereachesultimaterate_980F0DB6461CE1DDD5779A7503663601" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract_577F80DC3D9523F796B59A75035664EA" xlink:to="loc_noc_DefinedBenefitPlanBenefitObligationCashBalanceCreditingRateYearthatratereachesultimaterate_980F0DB6461CE1DDD5779A7503663601" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease_E600DDF3E2D9F09F0C879A75036609D3" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract_577F80DC3D9523F796B59A75035664EA" xlink:to="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease_E600DDF3E2D9F09F0C879A75036609D3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract" xlink:label="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract_CDE49E30E77B06CBC5919A750366B1EE" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_529FA33ACA7C525533EE9A7503563D60" xlink:to="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract_CDE49E30E77B06CBC5919A750366B1EE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate_C223F70D9120F4AF10609A750366527E" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract_CDE49E30E77B06CBC5919A750366B1EE" xlink:to="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate_C223F70D9120F4AF10609A750366527E" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_DefinedBenefitPlanBenefitCostCashBalanceCreditingRateAssumedfornextfiscalyear" xlink:label="loc_noc_DefinedBenefitPlanBenefitCostCashBalanceCreditingRateAssumedfornextfiscalyear_D1A71AA8A1A436B9A2509A750366AE50" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract_CDE49E30E77B06CBC5919A750366B1EE" xlink:to="loc_noc_DefinedBenefitPlanBenefitCostCashBalanceCreditingRateAssumedfornextfiscalyear_D1A71AA8A1A436B9A2509A750366AE50" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_DefinedBenefitPlanBenefitCostUltimateCashBalanceCreditingRate" xlink:label="loc_noc_DefinedBenefitPlanBenefitCostUltimateCashBalanceCreditingRate_E8CF29B491B9DF735FB79A750366D697" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract_CDE49E30E77B06CBC5919A750366B1EE" xlink:to="loc_noc_DefinedBenefitPlanBenefitCostUltimateCashBalanceCreditingRate_E8CF29B491B9DF735FB79A750366D697" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_DefinedBenefitPlanBenefitCostCashBalanceCreditingRateYearthattheratereachestheultimaterate" xlink:label="loc_noc_DefinedBenefitPlanBenefitCostCashBalanceCreditingRateYearthattheratereachestheultimaterate_EA1CBA5EF2EE7F2CA8219A7503661CEA" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract_CDE49E30E77B06CBC5919A750366B1EE" xlink:to="loc_noc_DefinedBenefitPlanBenefitCostCashBalanceCreditingRateYearthattheratereachestheultimaterate_EA1CBA5EF2EE7F2CA8219A7503661CEA" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets_2ED2CD18D1B9B63579A99A7503666300" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract_CDE49E30E77B06CBC5919A750366B1EE" xlink:to="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets_2ED2CD18D1B9B63579A99A7503666300" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease_CA3ADA84C7ACC680E55A9A7503662CEE" xlink:type="locator" />
    <link:presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract_CDE49E30E77B06CBC5919A750366B1EE" xlink:to="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease_CA3ADA84C7ACC680E55A9A7503662CEE" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/RetirementBenefitsDetails6" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:label="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_4F72128BADC615107C489B8E78C2336F" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_75971D3907DE2E7228499B8E78C2229C" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_4F72128BADC615107C489B8E78C2336F" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_75971D3907DE2E7228499B8E78C2229C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis" xlink:label="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_37922C7182A1D31A11229B8E78C25013" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_75971D3907DE2E7228499B8E78C2229C" xlink:to="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_37922C7182A1D31A11229B8E78C25013" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PlanAssetCategoriesDomain" xlink:label="loc_us-gaap_PlanAssetCategoriesDomain_1185EFE4C6EE0090A2DD9B8E78C27E4D" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_37922C7182A1D31A11229B8E78C25013" xlink:to="loc_us-gaap_PlanAssetCategoriesDomain_1185EFE4C6EE0090A2DD9B8E78C27E4D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CashAndCashEquivalentsMember" xlink:label="loc_us-gaap_CashAndCashEquivalentsMember_09962FD33685011089079B8E78C2298C" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_1185EFE4C6EE0090A2DD9B8E78C27E4D" xlink:to="loc_us-gaap_CashAndCashEquivalentsMember_09962FD33685011089079B8E78C2298C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquitySecuritiesMember" xlink:label="loc_us-gaap_EquitySecuritiesMember_18EB98462B54AB4912EC9B9F23559D73" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_1185EFE4C6EE0090A2DD9B8E78C27E4D" xlink:to="loc_us-gaap_EquitySecuritiesMember_18EB98462B54AB4912EC9B9F23559D73" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FixedIncomeSecuritiesMember" xlink:label="loc_us-gaap_FixedIncomeSecuritiesMember_DA5A6DD04F0F59E8A8839B8E78C231E2" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_1185EFE4C6EE0090A2DD9B8E78C27E4D" xlink:to="loc_us-gaap_FixedIncomeSecuritiesMember_DA5A6DD04F0F59E8A8839B8E78C231E2" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_RealEstateAndOtherSecuritiesMember" xlink:label="loc_noc_RealEstateAndOtherSecuritiesMember_569EA2D9FD8EEDEC208F9B8E78C22D12" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_1185EFE4C6EE0090A2DD9B8E78C27E4D" xlink:to="loc_noc_RealEstateAndOtherSecuritiesMember_569EA2D9FD8EEDEC208F9B8E78C22D12" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeAxis" xlink:label="loc_srt_RangeAxis_B3CF98E4620DB61DA3359B8E78C235E0" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_75971D3907DE2E7228499B8E78C2229C" xlink:to="loc_srt_RangeAxis_B3CF98E4620DB61DA3359B8E78C235E0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeMember" xlink:label="loc_srt_RangeMember_CE5E1D8B76082AFE22F69B8E78C23904" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RangeAxis_B3CF98E4620DB61DA3359B8E78C235E0" xlink:to="loc_srt_RangeMember_CE5E1D8B76082AFE22F69B8E78C23904" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MinimumMember" xlink:label="loc_srt_MinimumMember_D8625659100F877958B59B8E78C257C5" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RangeMember_CE5E1D8B76082AFE22F69B8E78C23904" xlink:to="loc_srt_MinimumMember_D8625659100F877958B59B8E78C257C5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MaximumMember" xlink:label="loc_srt_MaximumMember_0767DD2BE1BB83EE59A19B8E78C2C970" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RangeMember_CE5E1D8B76082AFE22F69B8E78C23904" xlink:to="loc_srt_MaximumMember_0767DD2BE1BB83EE59A19B8E78C2C970" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_A0C23176A3975F428DFA9B8E78C22F15" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_75971D3907DE2E7228499B8E78C2229C" xlink:to="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_A0C23176A3975F428DFA9B8E78C22F15" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanAssetsTargetAllocationsAbstract" xlink:label="loc_us-gaap_DefinedBenefitPlanAssetsTargetAllocationsAbstract_86AB858AE79E98F8793B9B8E78C23503" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_A0C23176A3975F428DFA9B8E78C22F15" xlink:to="loc_us-gaap_DefinedBenefitPlanAssetsTargetAllocationsAbstract_86AB858AE79E98F8793B9B8E78C23503" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage" xlink:label="loc_us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage_447C21E410FF1BD3085D9B8E78D1798A" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanAssetsTargetAllocationsAbstract_86AB858AE79E98F8793B9B8E78C23503" xlink:to="loc_us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage_447C21E410FF1BD3085D9B8E78D1798A" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/RetirementBenefitsDetails7" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:label="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_45A2C4F6F7D9651C3FF09CB990BDC7D4" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_76F9454645984B9977649CB990BD7D44" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_45A2C4F6F7D9651C3FF09CB990BDC7D4" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_76F9454645984B9977649CB990BD7D44" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_BAC736222C955AACEBAB9CB990BD50B9" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_76F9454645984B9977649CB990BD7D44" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_BAC736222C955AACEBAB9CB990BD50B9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_53A38A4F5C2F190A332F9CB990CC25F1" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_BAC736222C955AACEBAB9CB990BD50B9" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_53A38A4F5C2F190A332F9CB990CC25F1" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_PensionandOtherPostretirementbenefitplansMember" xlink:label="loc_noc_PensionandOtherPostretirementbenefitplansMember_F02803254887949CBF609CB990CCD508" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_53A38A4F5C2F190A332F9CB990CC25F1" xlink:to="loc_noc_PensionandOtherPostretirementbenefitplansMember_F02803254887949CBF609CB990CCD508" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_E7E360E49861BA7C43E19CB990CC81C1" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_76F9454645984B9977649CB990BD7D44" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_E7E360E49861BA7C43E19CB990CC81C1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_25D8D9697DB62763EC819CB990CC4253" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_E7E360E49861BA7C43E19CB990CC81C1" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_25D8D9697DB62763EC819CB990CC4253" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueInputsLevel1Member" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_D3C63B2C62A16F77A6909CB990CC2644" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_25D8D9697DB62763EC819CB990CC4253" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_D3C63B2C62A16F77A6909CB990CC2644" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueInputsLevel2Member" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_3DAED78F003CF64DBFE59CB990CC38F6" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_25D8D9697DB62763EC819CB990CC4253" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_3DAED78F003CF64DBFE59CB990CC38F6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueInputsLevel3Member" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_32FA750D193A3962566C9CB990CC1E12" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_25D8D9697DB62763EC819CB990CC4253" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_32FA750D193A3962566C9CB990CC1E12" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis" xlink:label="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_F32727A623CED663E87D9CB990CC87AD" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_76F9454645984B9977649CB990BD7D44" xlink:to="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_F32727A623CED663E87D9CB990CC87AD" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PlanAssetCategoriesDomain" xlink:label="loc_us-gaap_PlanAssetCategoriesDomain_CAE2696683CCE96276A89CB990CC4D4B" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_F32727A623CED663E87D9CB990CC87AD" xlink:to="loc_us-gaap_PlanAssetCategoriesDomain_CAE2696683CCE96276A89CB990CC4D4B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CashAndCashEquivalentsMember" xlink:label="loc_us-gaap_CashAndCashEquivalentsMember_1A94BFD36AD7CDCD6CE69CB990CC0688" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_CAE2696683CCE96276A89CB990CC4D4B" xlink:to="loc_us-gaap_CashAndCashEquivalentsMember_1A94BFD36AD7CDCD6CE69CB990CC0688" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_U.S.EquitySecuritiesMember" xlink:label="loc_noc_U.S.EquitySecuritiesMember_5C409C9B3316534DFFEF9CB990CC8C27" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_CAE2696683CCE96276A89CB990CC4D4B" xlink:to="loc_noc_U.S.EquitySecuritiesMember_5C409C9B3316534DFFEF9CB990CC8C27" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_InternationalEquitySecuritiesMember" xlink:label="loc_noc_InternationalEquitySecuritiesMember_E63AB7DE522DA75256999CB990CCFE3C" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_CAE2696683CCE96276A89CB990CC4D4B" xlink:to="loc_noc_InternationalEquitySecuritiesMember_E63AB7DE522DA75256999CB990CCFE3C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FixedIncomeSecuritiesMember" xlink:label="loc_us-gaap_FixedIncomeSecuritiesMember_0356631179C750045D809CB990CCD9C5" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_CAE2696683CCE96276A89CB990CC4D4B" xlink:to="loc_us-gaap_FixedIncomeSecuritiesMember_0356631179C750045D809CB990CCD9C5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_USTreasurySecuritiesMember" xlink:label="loc_us-gaap_USTreasurySecuritiesMember_B164F5161F28C75DB2CF9CB990CC2044" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FixedIncomeSecuritiesMember_0356631179C750045D809CB990CCD9C5" xlink:to="loc_us-gaap_USTreasurySecuritiesMember_B164F5161F28C75DB2CF9CB990CC2044" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_USGovernmentAgenciesDebtSecuritiesMember" xlink:label="loc_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_471542229A0A2E3D0DF29CB990CCA272" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FixedIncomeSecuritiesMember_0356631179C750045D809CB990CCD9C5" xlink:to="loc_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_471542229A0A2E3D0DF29CB990CCA272" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ForeignGovernmentDebtSecuritiesMember" xlink:label="loc_us-gaap_ForeignGovernmentDebtSecuritiesMember_64DFC20B8DA3266E5C899CB990CCC68A" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FixedIncomeSecuritiesMember_0356631179C750045D809CB990CCD9C5" xlink:to="loc_us-gaap_ForeignGovernmentDebtSecuritiesMember_64DFC20B8DA3266E5C899CB990CCC68A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CorporateDebtSecuritiesMember" xlink:label="loc_us-gaap_CorporateDebtSecuritiesMember_B97AF1B056F3B8E5C83C9CB990CC8A3F" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FixedIncomeSecuritiesMember_0356631179C750045D809CB990CCD9C5" xlink:to="loc_us-gaap_CorporateDebtSecuritiesMember_B97AF1B056F3B8E5C83C9CB990CC8A3F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AssetBackedSecuritiesMember" xlink:label="loc_us-gaap_AssetBackedSecuritiesMember_607F462149F3C34226049CB990CC5E01" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FixedIncomeSecuritiesMember_0356631179C750045D809CB990CCD9C5" xlink:to="loc_us-gaap_AssetBackedSecuritiesMember_607F462149F3C34226049CB990CC5E01" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_HighYieldDebtSecuritiesMember" xlink:label="loc_noc_HighYieldDebtSecuritiesMember_7205498122A158F6787A9CB990CCD479" xlink:type="locator" />
    <link:presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FixedIncomeSecuritiesMember_0356631179C750045D809CB990CCD9C5" xlink:to="loc_noc_HighYieldDebtSecuritiesMember_7205498122A158F6787A9CB990CCD479" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_BankLoansMember" xlink:label="loc_noc_BankLoansMember_012D8A284186ACCA06CE9CB990CC306B" xlink:type="locator" />
    <link:presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FixedIncomeSecuritiesMember_0356631179C750045D809CB990CCD9C5" xlink:to="loc_noc_BankLoansMember_012D8A284186ACCA06CE9CB990CC306B" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_OtherAssetCategoriesMember" xlink:label="loc_noc_OtherAssetCategoriesMember_B288555C58AB65968C199CB990CC4C10" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_CAE2696683CCE96276A89CB990CC4D4B" xlink:to="loc_noc_OtherAssetCategoriesMember_B288555C58AB65968C199CB990CC4C10" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FixedIncomeFundsMember" xlink:label="loc_us-gaap_FixedIncomeFundsMember_CB0915652A8D7C8C85EF9CB990CCF882" xlink:type="locator" />
    <link:presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_CAE2696683CCE96276A89CB990CC4D4B" xlink:to="loc_us-gaap_FixedIncomeFundsMember_CB0915652A8D7C8C85EF9CB990CCF882" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_HedgeFundsMember" xlink:label="loc_us-gaap_HedgeFundsMember_7A7ABB77B95886B39D1A9CB990CCAEB8" xlink:type="locator" />
    <link:presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_CAE2696683CCE96276A89CB990CC4D4B" xlink:to="loc_us-gaap_HedgeFundsMember_7A7ABB77B95886B39D1A9CB990CCAEB8" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_OpportunisticFundsMember" xlink:label="loc_noc_OpportunisticFundsMember_96BEA3CA55EC4D4BCC959CB990CC0CE2" xlink:type="locator" />
    <link:presentationArc order="8" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_CAE2696683CCE96276A89CB990CC4D4B" xlink:to="loc_noc_OpportunisticFundsMember_96BEA3CA55EC4D4BCC959CB990CC0CE2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PrivateEquityFundsMember" xlink:label="loc_us-gaap_PrivateEquityFundsMember_070DDD1F79C2D078D1389CB990CC76CB" xlink:type="locator" />
    <link:presentationArc order="9" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_CAE2696683CCE96276A89CB990CC4D4B" xlink:to="loc_us-gaap_PrivateEquityFundsMember_070DDD1F79C2D078D1389CB990CC76CB" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RealEstateFundsMember" xlink:label="loc_us-gaap_RealEstateFundsMember_6E39CE63FA5B39C678B39CBD012088FC" xlink:type="locator" />
    <link:presentationArc order="10" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_CAE2696683CCE96276A89CB990CC4D4B" xlink:to="loc_us-gaap_RealEstateFundsMember_6E39CE63FA5B39C678B39CBD012088FC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_84B1EC05CE634FF9FF9B9CB990CCC495" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_76F9454645984B9977649CB990BD7D44" xlink:to="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_84B1EC05CE634FF9FF9B9CB990CCC495" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanInformationAboutPlanAssetsAbstract" xlink:label="loc_us-gaap_DefinedBenefitPlanInformationAboutPlanAssetsAbstract_ABF2633C7EECF4CE7D2E9CB990CC7975" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_84B1EC05CE634FF9FF9B9CB990CCC495" xlink:to="loc_us-gaap_DefinedBenefitPlanInformationAboutPlanAssetsAbstract_ABF2633C7EECF4CE7D2E9CB990CC7975" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanFairValueOfPlanAssets" xlink:label="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_F84B55785A7687FDF60C9CB990CCE399" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanInformationAboutPlanAssetsAbstract_ABF2633C7EECF4CE7D2E9CB990CC7975" xlink:to="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_F84B55785A7687FDF60C9CB990CCE399" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AlternativeInvestment" xlink:label="loc_us-gaap_AlternativeInvestment_D6E3D27AEFD2F740C0EF9CB990CC3262" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanInformationAboutPlanAssetsAbstract_ABF2633C7EECF4CE7D2E9CB990CC7975" xlink:to="loc_us-gaap_AlternativeInvestment_D6E3D27AEFD2F740C0EF9CB990CC3262" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DerivativeAssets" xlink:label="loc_us-gaap_DerivativeAssets_3D41D62F129CAA7DE4119CB990CC6AEF" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_84B1EC05CE634FF9FF9B9CB990CCC495" xlink:to="loc_us-gaap_DerivativeAssets_3D41D62F129CAA7DE4119CB990CC6AEF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DerivativeLiabilities" xlink:label="loc_us-gaap_DerivativeLiabilities_E75A17F1CE41591D85169CB990CCD8FD" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_84B1EC05CE634FF9FF9B9CB990CCC495" xlink:to="loc_us-gaap_DerivativeLiabilities_E75A17F1CE41591D85169CB990CCD8FD" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.sec.gov/invest/2013/invest-2013-01-31.xsd#invest_DerivativeNotionalAmount" xlink:label="loc_invest_DerivativeNotionalAmount_62CAF3706294BCF1498B9CB990CCC10B" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_84B1EC05CE634FF9FF9B9CB990CCC495" xlink:to="loc_invest_DerivativeNotionalAmount_62CAF3706294BCF1498B9CB990CCC10B" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/RetirementBenefitsDetails8" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:label="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_ECE07A7C246440A5411E9B7A1A54060C" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_59F31651AB5D8F860F189B7A1A54A27E" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_ECE07A7C246440A5411E9B7A1A54060C" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_59F31651AB5D8F860F189B7A1A54A27E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_AC4A2010C1EFC09DAF6F9B7A1A54E75A" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_59F31651AB5D8F860F189B7A1A54A27E" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_AC4A2010C1EFC09DAF6F9B7A1A54E75A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_85AE0A7A1498FB7C35B69B7A1A5443A2" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_AC4A2010C1EFC09DAF6F9B7A1A54E75A" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_85AE0A7A1498FB7C35B69B7A1A5443A2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_D01A6ED6FECEE837034B9B7A1A54EFFF" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_85AE0A7A1498FB7C35B69B7A1A5443A2" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_D01A6ED6FECEE837034B9B7A1A54EFFF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_BC4ED770E30CB98A3FE89B7A1A543A32" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_85AE0A7A1498FB7C35B69B7A1A5443A2" xlink:to="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_BC4ED770E30CB98A3FE89B7A1A543A32" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_097B9C7CC0AC0277FF5A9B7A1A545532" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_59F31651AB5D8F860F189B7A1A54A27E" xlink:to="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_097B9C7CC0AC0277FF5A9B7A1A545532" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract" xlink:label="loc_us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract_33133D94FE9D1D52CE7D9B7A1A54B280" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_097B9C7CC0AC0277FF5A9B7A1A545532" xlink:to="loc_us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract_33133D94FE9D1D52CE7D9B7A1A54B280" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths_DD0B020F103D0C710C2C9B7A1A54510F" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract_33133D94FE9D1D52CE7D9B7A1A54B280" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths_DD0B020F103D0C710C2C9B7A1A54510F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo_085B3886933E499CF6879B7A1A545BD0" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract_33133D94FE9D1D52CE7D9B7A1A54B280" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo_085B3886933E499CF6879B7A1A545BD0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree_31DC51507345148F8C129B7A1A5455E5" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract_33133D94FE9D1D52CE7D9B7A1A54B280" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree_31DC51507345148F8C129B7A1A5455E5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour_BCFFB30A66D0F68F79BC9B7A1A540CCB" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract_33133D94FE9D1D52CE7D9B7A1A54B280" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour_BCFFB30A66D0F68F79BC9B7A1A540CCB" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive_47815EB0CD636F9AF63E9B7A1A546CA6" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract_33133D94FE9D1D52CE7D9B7A1A54B280" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive_47815EB0CD636F9AF63E9B7A1A546CA6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter_AF6BCD5BE455A0932ABD9B7A1A542199" xlink:type="locator" />
    <link:presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract_33133D94FE9D1D52CE7D9B7A1A54B280" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter_AF6BCD5BE455A0932ABD9B7A1A542199" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/RetirementBenefitsDetails9" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:label="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_F18701FB41C97470C7479D25D94A7FBE" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_BD26EE2FD4698DA8895B9D25D94A29D7" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_F18701FB41C97470C7479D25D94A7FBE" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_BD26EE2FD4698DA8895B9D25D94A29D7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeAxis" xlink:label="loc_srt_RangeAxis_D11B642177C0DC3FEA369D25D94A0604" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_BD26EE2FD4698DA8895B9D25D94A29D7" xlink:to="loc_srt_RangeAxis_D11B642177C0DC3FEA369D25D94A0604" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeMember" xlink:label="loc_srt_RangeMember_59B1ABC8A9CBF8C179F39D25D94AF6F4" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RangeAxis_D11B642177C0DC3FEA369D25D94A0604" xlink:to="loc_srt_RangeMember_59B1ABC8A9CBF8C179F39D25D94AF6F4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MinimumMember" xlink:label="loc_srt_MinimumMember_061436C15B0D3B0D90CE9D25D94A2887" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RangeMember_59B1ABC8A9CBF8C179F39D25D94AF6F4" xlink:to="loc_srt_MinimumMember_061436C15B0D3B0D90CE9D25D94A2887" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MaximumMember" xlink:label="loc_srt_MaximumMember_C6373F8AE92CB8A824EA9D25D94A63BA" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RangeMember_59B1ABC8A9CBF8C179F39D25D94AF6F4" xlink:to="loc_srt_MaximumMember_C6373F8AE92CB8A824EA9D25D94A63BA" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis" xlink:label="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_CE08EE49AC7D8CF6A3F89D25D94A2912" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_BD26EE2FD4698DA8895B9D25D94A29D7" xlink:to="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_CE08EE49AC7D8CF6A3F89D25D94A2912" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PlanAssetCategoriesDomain" xlink:label="loc_us-gaap_PlanAssetCategoriesDomain_52984E20176D1A4339EF9D25D94AF33D" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_CE08EE49AC7D8CF6A3F89D25D94A2912" xlink:to="loc_us-gaap_PlanAssetCategoriesDomain_52984E20176D1A4339EF9D25D94AF33D" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_U.S.EquitySecuritiesMember" xlink:label="loc_noc_U.S.EquitySecuritiesMember_86021A558570C2B464619D25D94A1E85" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_52984E20176D1A4339EF9D25D94AF33D" xlink:to="loc_noc_U.S.EquitySecuritiesMember_86021A558570C2B464619D25D94A1E85" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_InternationalEquitySecuritiesMember" xlink:label="loc_noc_InternationalEquitySecuritiesMember_D9ACCD90E60B87BDD42D9D25D94A82F1" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_52984E20176D1A4339EF9D25D94AF33D" xlink:to="loc_noc_InternationalEquitySecuritiesMember_D9ACCD90E60B87BDD42D9D25D94A82F1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FixedIncomeFundsMember" xlink:label="loc_us-gaap_FixedIncomeFundsMember_20BDCDFF38A8B3CAE9699D25D94A0858" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_52984E20176D1A4339EF9D25D94AF33D" xlink:to="loc_us-gaap_FixedIncomeFundsMember_20BDCDFF38A8B3CAE9699D25D94A0858" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_HedgeFundsMember" xlink:label="loc_us-gaap_HedgeFundsMember_1D329E3727F314D293669D25D94A83E3" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_52984E20176D1A4339EF9D25D94AF33D" xlink:to="loc_us-gaap_HedgeFundsMember_1D329E3727F314D293669D25D94A83E3" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_OpportunisticFundsMember" xlink:label="loc_noc_OpportunisticFundsMember_F55FC6DDB04697B9E94C9D25D94A7104" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_52984E20176D1A4339EF9D25D94AF33D" xlink:to="loc_noc_OpportunisticFundsMember_F55FC6DDB04697B9E94C9D25D94A7104" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PrivateEquityFundsMember" xlink:label="loc_us-gaap_PrivateEquityFundsMember_D9DC4FEC995CEFC28E239D25D94A4BDB" xlink:type="locator" />
    <link:presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_52984E20176D1A4339EF9D25D94AF33D" xlink:to="loc_us-gaap_PrivateEquityFundsMember_D9DC4FEC995CEFC28E239D25D94A4BDB" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RealEstateFundsMember" xlink:label="loc_us-gaap_RealEstateFundsMember_6DE8FCD1CD921B2B40209D25D94AD393" xlink:type="locator" />
    <link:presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_52984E20176D1A4339EF9D25D94AF33D" xlink:to="loc_us-gaap_RealEstateFundsMember_6DE8FCD1CD921B2B40209D25D94AD393" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:label="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_5CEF09189EAB7157EAD69D25D94AF2C4" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_BD26EE2FD4698DA8895B9D25D94A29D7" xlink:to="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_5CEF09189EAB7157EAD69D25D94AF2C4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TypeOfAdoptionMember" xlink:label="loc_us-gaap_TypeOfAdoptionMember_C3D1952C22B1BC4F35289D25D94A0D5D" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_5CEF09189EAB7157EAD69D25D94AF2C4" xlink:to="loc_us-gaap_TypeOfAdoptionMember_C3D1952C22B1BC4F35289D25D94A0D5D" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_DefinedBenefitPlanInterestonServiceCostisreclassifiedtoInterestCostMember" xlink:label="loc_noc_DefinedBenefitPlanInterestonServiceCostisreclassifiedtoInterestCostMember_2069DDBEB5F045F9EFB59D25D94AF939" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_TypeOfAdoptionMember_C3D1952C22B1BC4F35289D25D94A0D5D" xlink:to="loc_noc_DefinedBenefitPlanInterestonServiceCostisreclassifiedtoInterestCostMember_2069DDBEB5F045F9EFB59D25D94AF939" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_DefinedBenefitPlanAdministrativeExpensesoftheServiceCostreclassifiedtoNetActuarialLossMember" xlink:label="loc_noc_DefinedBenefitPlanAdministrativeExpensesoftheServiceCostreclassifiedtoNetActuarialLossMember_8E449008A7F07ADFFD8D9D25D94AE654" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_TypeOfAdoptionMember_C3D1952C22B1BC4F35289D25D94A0D5D" xlink:to="loc_noc_DefinedBenefitPlanAdministrativeExpensesoftheServiceCostreclassifiedtoNetActuarialLossMember_8E449008A7F07ADFFD8D9D25D94AE654" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_701B6FDB42106E7213CF9D25D94AB3D8" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_BD26EE2FD4698DA8895B9D25D94A29D7" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_701B6FDB42106E7213CF9D25D94AB3D8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_1289CDA214381C7DB23B9D25D94A9E41" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_701B6FDB42106E7213CF9D25D94AB3D8" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_1289CDA214381C7DB23B9D25D94A9E41" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_7863AE0576F10405E07A9D25D94A265C" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_1289CDA214381C7DB23B9D25D94A9E41" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_7863AE0576F10405E07A9D25D94A265C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_8904FB111279F555CB789D25D94AB1CE" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_1289CDA214381C7DB23B9D25D94A9E41" xlink:to="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_8904FB111279F555CB789D25D94AB1CE" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_ContributionTypeAxis" xlink:label="loc_noc_ContributionTypeAxis_839BC8E657D0B238C5F19D25D94A47CE" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_BD26EE2FD4698DA8895B9D25D94A29D7" xlink:to="loc_noc_ContributionTypeAxis_839BC8E657D0B238C5F19D25D94A47CE" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_ContributionTypeDomain" xlink:label="loc_noc_ContributionTypeDomain_BDF999B826AB4F02B5A89D25D94A139F" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_noc_ContributionTypeAxis_839BC8E657D0B238C5F19D25D94A47CE" xlink:to="loc_noc_ContributionTypeDomain_BDF999B826AB4F02B5A89D25D94A139F" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_VoluntaryContributionsMember" xlink:label="loc_noc_VoluntaryContributionsMember_21C77EF112F85A6423649D25D9549562" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_noc_ContributionTypeDomain_BDF999B826AB4F02B5A89D25D94A139F" xlink:to="loc_noc_VoluntaryContributionsMember_21C77EF112F85A6423649D25D9549562" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_CDEF0E5E38467D4328EE9D25D954655D" xlink:type="locator" />
    <link:presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_BD26EE2FD4698DA8895B9D25D94A29D7" xlink:to="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_CDEF0E5E38467D4328EE9D25D954655D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage" xlink:label="loc_us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage_B7330C9C4161252368419D25D954C765" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_CDEF0E5E38467D4328EE9D25D954655D" xlink:to="loc_us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage_B7330C9C4161252368419D25D954C765" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PriorPeriodReclassificationAdjustment" xlink:label="loc_us-gaap_PriorPeriodReclassificationAdjustment_624344727055D514F98F9D25D954C601" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_CDEF0E5E38467D4328EE9D25D954655D" xlink:to="loc_us-gaap_PriorPeriodReclassificationAdjustment_624344727055D514F98F9D25D954C601" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedAmortizationOfPriorServiceCostCreditNextFiscalYear" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedAmortizationOfPriorServiceCostCreditNextFiscalYear_A6EDCA2E64B02113595C9D25D954BACC" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_CDEF0E5E38467D4328EE9D25D954655D" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedAmortizationOfPriorServiceCostCreditNextFiscalYear_A6EDCA2E64B02113595C9D25D954BACC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedContributionPensionAndOtherPostretirementPlansDisclosureAbstract" xlink:label="loc_us-gaap_DefinedContributionPensionAndOtherPostretirementPlansDisclosureAbstract_AF5247784891AA2A93899D25D954879B" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_CDEF0E5E38467D4328EE9D25D954655D" xlink:to="loc_us-gaap_DefinedContributionPensionAndOtherPostretirementPlansDisclosureAbstract_AF5247784891AA2A93899D25D954879B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount" xlink:label="loc_us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount_59A6968FBE1FFB90FA979D25D95438C1" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedContributionPensionAndOtherPostretirementPlansDisclosureAbstract_AF5247784891AA2A93899D25D954879B" xlink:to="loc_us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount_59A6968FBE1FFB90FA979D25D95438C1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear_9EBE544CEBD6B042F2899D25D954101A" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedContributionPensionAndOtherPostretirementPlansDisclosureAbstract_AF5247784891AA2A93899D25D954879B" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear_9EBE544CEBD6B042F2899D25D954101A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPensionPlansAndDefinedBenefitPostretirementPlansDisclosureAbstract" xlink:label="loc_us-gaap_DefinedBenefitPensionPlansAndDefinedBenefitPostretirementPlansDisclosureAbstract_A63F156BEF44B79EFA219D25D954C644" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_CDEF0E5E38467D4328EE9D25D954655D" xlink:to="loc_us-gaap_DefinedBenefitPensionPlansAndDefinedBenefitPostretirementPlansDisclosureAbstract_A63F156BEF44B79EFA219D25D954C644" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation" xlink:label="loc_us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation_6D82CAB3AA6EC0F9C7CF9D25D954F90C" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPensionPlansAndDefinedBenefitPostretirementPlansDisclosureAbstract_A63F156BEF44B79EFA219D25D954C644" xlink:to="loc_us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation_6D82CAB3AA6EC0F9C7CF9D25D954F90C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanInformationAboutPlanAssetsAbstract" xlink:label="loc_us-gaap_DefinedBenefitPlanInformationAboutPlanAssetsAbstract_3F9224E1299EE9AFF44D9D25D954714E" xlink:type="locator" />
    <link:presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_CDEF0E5E38467D4328EE9D25D954655D" xlink:to="loc_us-gaap_DefinedBenefitPlanInformationAboutPlanAssetsAbstract_3F9224E1299EE9AFF44D9D25D954714E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments" xlink:label="loc_us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments_D6D982E765C89AA4C4279D25D954FEB8" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanInformationAboutPlanAssetsAbstract_3F9224E1299EE9AFF44D9D25D954714E" xlink:to="loc_us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments_D6D982E765C89AA4C4279D25D954FEB8" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_AverageInvestmentTermAlternativeInvestments" xlink:label="loc_noc_AverageInvestmentTermAlternativeInvestments_0A4A920DA3307144AFC79D25D95436E7" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanInformationAboutPlanAssetsAbstract_3F9224E1299EE9AFF44D9D25D954714E" xlink:to="loc_noc_AverageInvestmentTermAlternativeInvestments_0A4A920DA3307144AFC79D25D95436E7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareInvestmentRedemptionFrequency" xlink:label="loc_us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareInvestmentRedemptionFrequency_1B08208473142ED0F6469D25D9543961" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanInformationAboutPlanAssetsAbstract_3F9224E1299EE9AFF44D9D25D954714E" xlink:to="loc_us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareInvestmentRedemptionFrequency_1B08208473142ED0F6469D25D9543961" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareInvestmentRedemptionNoticePeriod1" xlink:label="loc_us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareInvestmentRedemptionNoticePeriod1_C577EA1118598CF871E39D25D95436EF" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanInformationAboutPlanAssetsAbstract_3F9224E1299EE9AFF44D9D25D954714E" xlink:to="loc_us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareInvestmentRedemptionNoticePeriod1_C577EA1118598CF871E39D25D95436EF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanContributionsByEmployer" xlink:label="loc_us-gaap_DefinedBenefitPlanContributionsByEmployer_38EBBE3967FBA5E7722C9D25D9549233" xlink:type="locator" />
    <link:presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_CDEF0E5E38467D4328EE9D25D954655D" xlink:to="loc_us-gaap_DefinedBenefitPlanContributionsByEmployer_38EBBE3967FBA5E7722C9D25D9549233" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/RetirementBenefitsTables" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:label="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_F62E61AA507C58A85DD09CB9912AB337" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfCostsOfRetirementPlansTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfCostsOfRetirementPlansTableTextBlock_982D051656D604370EFB9CB9912A0357" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_F62E61AA507C58A85DD09CB9912AB337" xlink:to="loc_us-gaap_ScheduleOfCostsOfRetirementPlansTableTextBlock_982D051656D604370EFB9CB9912A0357" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfAmountsRecognizedInOtherComprehensiveIncomeLossTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfAmountsRecognizedInOtherComprehensiveIncomeLossTableTextBlock_0ACF8C8E2B2D5B0B80719CB9913A87E3" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_F62E61AA507C58A85DD09CB9912AB337" xlink:to="loc_us-gaap_ScheduleOfAmountsRecognizedInOtherComprehensiveIncomeLossTableTextBlock_0ACF8C8E2B2D5B0B80719CB9913A87E3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ChangesInProjectedBenefitObligationsFairValueOfPlanAssetsAndFundedStatusOfPlanTableTextBlock" xlink:label="loc_us-gaap_ChangesInProjectedBenefitObligationsFairValueOfPlanAssetsAndFundedStatusOfPlanTableTextBlock_6B09B1D7ACACB3FF77399CB9913A7BCF" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_F62E61AA507C58A85DD09CB9912AB337" xlink:to="loc_us-gaap_ChangesInProjectedBenefitObligationsFairValueOfPlanAssetsAndFundedStatusOfPlanTableTextBlock_6B09B1D7ACACB3FF77399CB9913A7BCF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfAccumulatedBenefitObligationsInExcessOfFairValueOfPlanAssetsTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfAccumulatedBenefitObligationsInExcessOfFairValueOfPlanAssetsTableTextBlock_A80B42DC27DFEE47C4AF9CB9913ABD4A" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_F62E61AA507C58A85DD09CB9912AB337" xlink:to="loc_us-gaap_ScheduleOfAccumulatedBenefitObligationsInExcessOfFairValueOfPlanAssetsTableTextBlock_A80B42DC27DFEE47C4AF9CB9913ABD4A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfAssumptionsUsedTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfAssumptionsUsedTableTextBlock_DF3C9F98738A2D3E0AA09CB9913A60AD" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_F62E61AA507C58A85DD09CB9912AB337" xlink:to="loc_us-gaap_ScheduleOfAssumptionsUsedTableTextBlock_DF3C9F98738A2D3E0AA09CB9913A60AD" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfAllocationOfPlanAssetsTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfAllocationOfPlanAssetsTableTextBlock_92C941CBCB0279B181529CB9913A7F32" xlink:type="locator" />
    <link:presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_F62E61AA507C58A85DD09CB9912AB337" xlink:to="loc_us-gaap_ScheduleOfAllocationOfPlanAssetsTableTextBlock_92C941CBCB0279B181529CB9913A7F32" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfExpectedBenefitPaymentsTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfExpectedBenefitPaymentsTableTextBlock_454D5BA96663DD9CF9F59CB9913A5DE5" xlink:type="locator" />
    <link:presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_F62E61AA507C58A85DD09CB9912AB337" xlink:to="loc_us-gaap_ScheduleOfExpectedBenefitPaymentsTableTextBlock_454D5BA96663DD9CF9F59CB9913A5DE5" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/SegmentInformation" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentReportingAbstract" xlink:label="loc_us-gaap_SegmentReportingAbstract_082246D8D45BE699C2AF977AA4941453" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentReportingDisclosureTextBlock" xlink:label="loc_us-gaap_SegmentReportingDisclosureTextBlock_0208EBF00CE7774C76E9977AA4948921" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentReportingAbstract_082246D8D45BE699C2AF977AA4941453" xlink:to="loc_us-gaap_SegmentReportingDisclosureTextBlock_0208EBF00CE7774C76E9977AA4948921" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/SegmentInformationDetails1" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentReportingAbstract" xlink:label="loc_us-gaap_SegmentReportingAbstract_D9BE457868759D7B8FAF9F9C03C12C1A" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_169EF7E841B5859E17A69F9C03C1F468" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentReportingAbstract_D9BE457868759D7B8FAF9F9C03C12C1A" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_169EF7E841B5859E17A69F9C03C1F468" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidationItemsAxis" xlink:label="loc_srt_ConsolidationItemsAxis_0CDABC566FC890EAB63B9F9C03D0A158" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_169EF7E841B5859E17A69F9C03C1F468" xlink:to="loc_srt_ConsolidationItemsAxis_0CDABC566FC890EAB63B9F9C03D0A158" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="loc_srt_ConsolidationItemsDomain_DA5AE271262E823220259F9C03D05C08" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_ConsolidationItemsAxis_0CDABC566FC890EAB63B9F9C03D0A158" xlink:to="loc_srt_ConsolidationItemsDomain_DA5AE271262E823220259F9C03D05C08" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingSegmentsMember" xlink:label="loc_us-gaap_OperatingSegmentsMember_427981BC3315ECA2CAD09F9C03D01F5F" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_ConsolidationItemsDomain_DA5AE271262E823220259F9C03D05C08" xlink:to="loc_us-gaap_OperatingSegmentsMember_427981BC3315ECA2CAD09F9C03D01F5F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IntersegmentEliminationMember" xlink:label="loc_us-gaap_IntersegmentEliminationMember_D7B5E3A6407358936FB09F9C03D02994" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_ConsolidationItemsDomain_DA5AE271262E823220259F9C03D05C08" xlink:to="loc_us-gaap_IntersegmentEliminationMember_D7B5E3A6407358936FB09F9C03D02994" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_NetFASCASpensionadjustmentIncomeExpenseMember" xlink:label="loc_noc_NetFASCASpensionadjustmentIncomeExpenseMember_BFAD5960F541CDC661A49F9C03D08A8A" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_ConsolidationItemsDomain_DA5AE271262E823220259F9C03D05C08" xlink:to="loc_noc_NetFASCASpensionadjustmentIncomeExpenseMember_BFAD5960F541CDC661A49F9C03D08A8A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CorporateNonSegmentMember" xlink:label="loc_us-gaap_CorporateNonSegmentMember_177268DF5FD0021C91619F9C03D06653" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_ConsolidationItemsDomain_DA5AE271262E823220259F9C03D05C08" xlink:to="loc_us-gaap_CorporateNonSegmentMember_177268DF5FD0021C91619F9C03D06653" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_MaterialReconcilingItemsMember" xlink:label="loc_us-gaap_MaterialReconcilingItemsMember_5E31AADD05953BCDE6089F9C03D0E3E4" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_ConsolidationItemsDomain_DA5AE271262E823220259F9C03D05C08" xlink:to="loc_us-gaap_MaterialReconcilingItemsMember_5E31AADD05953BCDE6089F9C03D0E3E4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_9A7305A9F3A2D90927A49F9C03D068A5" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_169EF7E841B5859E17A69F9C03C1F468" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_9A7305A9F3A2D90927A49F9C03D068A5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_0684632BED45409611E09F9C03D05EE0" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_9A7305A9F3A2D90927A49F9C03D068A5" xlink:to="loc_us-gaap_SegmentDomain_0684632BED45409611E09F9C03D05EE0" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_AerospaceSystemsMember" xlink:label="loc_noc_AerospaceSystemsMember_119464BBA184DBC0C6089F9C03D0A5D6" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentDomain_0684632BED45409611E09F9C03D05EE0" xlink:to="loc_noc_AerospaceSystemsMember_119464BBA184DBC0C6089F9C03D0A5D6" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_InnovationSystemsMember" xlink:label="loc_noc_InnovationSystemsMember_03CB2AFC9A07BA9FE09F9F9C03D07F21" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentDomain_0684632BED45409611E09F9C03D05EE0" xlink:to="loc_noc_InnovationSystemsMember_03CB2AFC9A07BA9FE09F9F9C03D07F21" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_MissionSystemsMember" xlink:label="loc_noc_MissionSystemsMember_97061AA8F605429A4CAD9F9C03D06BD0" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentDomain_0684632BED45409611E09F9C03D05EE0" xlink:to="loc_noc_MissionSystemsMember_97061AA8F605429A4CAD9F9C03D06BD0" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_TechnologyServicesMember" xlink:label="loc_noc_TechnologyServicesMember_958E0B37CD1AE06E7D5F9F9C03D0D67C" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentDomain_0684632BED45409611E09F9C03D05EE0" xlink:to="loc_noc_TechnologyServicesMember_958E0B37CD1AE06E7D5F9F9C03D0D67C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_BC0D9A2E11339C6B43219F9C03D0A8DC" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_169EF7E841B5859E17A69F9C03C1F468" xlink:to="loc_us-gaap_SegmentReportingInformationLineItems_BC0D9A2E11339C6B43219F9C03D0A8DC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentReportingInformationRevenueAbstract" xlink:label="loc_us-gaap_SegmentReportingInformationRevenueAbstract_0B81485C0DE0E15808499F9C03D014A7" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_BC0D9A2E11339C6B43219F9C03D0A8DC" xlink:to="loc_us-gaap_SegmentReportingInformationRevenueAbstract_0B81485C0DE0E15808499F9C03D014A7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NumberOfReportableSegments" xlink:label="loc_us-gaap_NumberOfReportableSegments_5D50C2394F0FD6EAD3F39F9C03D071BB" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentReportingInformationRevenueAbstract_0B81485C0DE0E15808499F9C03D014A7" xlink:to="loc_us-gaap_NumberOfReportableSegments_5D50C2394F0FD6EAD3F39F9C03D071BB" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Revenues" xlink:label="loc_us-gaap_Revenues_2722E65488B584D406ED9F9C03D03985" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentReportingInformationRevenueAbstract_0B81485C0DE0E15808499F9C03D014A7" xlink:to="loc_us-gaap_Revenues_2722E65488B584D406ED9F9C03D03985" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:label="loc_us-gaap_OperatingIncomeLoss_26B701EB7CEAAD16AB429F9C03D0D8DF" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentReportingInformationRevenueAbstract_0B81485C0DE0E15808499F9C03D014A7" xlink:to="loc_us-gaap_OperatingIncomeLoss_26B701EB7CEAAD16AB429F9C03D0D8DF" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/SegmentInformationDetails2" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentReportingAbstract" xlink:label="loc_us-gaap_SegmentReportingAbstract_A7653E11497B440CAAE69BCA83453949" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable" xlink:label="loc_us-gaap_ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable_66F50291AAD2F3252F189BCA8345D042" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentReportingAbstract_A7653E11497B440CAAE69BCA83453949" xlink:to="loc_us-gaap_ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable_66F50291AAD2F3252F189BCA8345D042" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidationItemsAxis" xlink:label="loc_srt_ConsolidationItemsAxis_ED5A38316B0C9410935D9BCA8345DB34" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable_66F50291AAD2F3252F189BCA8345D042" xlink:to="loc_srt_ConsolidationItemsAxis_ED5A38316B0C9410935D9BCA8345DB34" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="loc_srt_ConsolidationItemsDomain_A95E3725AE0A5F50C7859BCA83457A28" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_ConsolidationItemsAxis_ED5A38316B0C9410935D9BCA8345DB34" xlink:to="loc_srt_ConsolidationItemsDomain_A95E3725AE0A5F50C7859BCA83457A28" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingSegmentsMember" xlink:label="loc_us-gaap_OperatingSegmentsMember_49B244C889816F4BA97A9BCA8345C5EC" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_ConsolidationItemsDomain_A95E3725AE0A5F50C7859BCA83457A28" xlink:to="loc_us-gaap_OperatingSegmentsMember_49B244C889816F4BA97A9BCA8345C5EC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MajorCustomersAxis" xlink:label="loc_srt_MajorCustomersAxis_731F739F44F0D948CAD59BCA8345CC90" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable_66F50291AAD2F3252F189BCA8345D042" xlink:to="loc_srt_MajorCustomersAxis_731F739F44F0D948CAD59BCA8345CC90" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_NameOfMajorCustomerDomain" xlink:label="loc_srt_NameOfMajorCustomerDomain_41C5CB376BEA35EF7EBA9BCA83453ACB" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_MajorCustomersAxis_731F739F44F0D948CAD59BCA8345CC90" xlink:to="loc_srt_NameOfMajorCustomerDomain_41C5CB376BEA35EF7EBA9BCA83453ACB" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_USGovernmentMember" xlink:label="loc_noc_USGovernmentMember_77DF11E324DC861F0C659BCA8345C0FE" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_NameOfMajorCustomerDomain_41C5CB376BEA35EF7EBA9BCA83453ACB" xlink:to="loc_noc_USGovernmentMember_77DF11E324DC861F0C659BCA8345C0FE" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_InternationalCustomerMember" xlink:label="loc_noc_InternationalCustomerMember_8EE12D32B41B06026D489BCA8345960B" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_NameOfMajorCustomerDomain_41C5CB376BEA35EF7EBA9BCA83453ACB" xlink:to="loc_noc_InternationalCustomerMember_8EE12D32B41B06026D489BCA8345960B" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_OtherCustomersMember" xlink:label="loc_noc_OtherCustomersMember_DAF4AA7B58AB4BCAEAB09BCA8345FBA2" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_NameOfMajorCustomerDomain_41C5CB376BEA35EF7EBA9BCA83453ACB" xlink:to="loc_noc_OtherCustomersMember_DAF4AA7B58AB4BCAEAB09BCA8345FBA2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IntersegmentEliminationMember" xlink:label="loc_us-gaap_IntersegmentEliminationMember_ADBEFDCDA3A1B1AE76CB9BCA83453F18" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_NameOfMajorCustomerDomain_41C5CB376BEA35EF7EBA9BCA83453ACB" xlink:to="loc_us-gaap_IntersegmentEliminationMember_ADBEFDCDA3A1B1AE76CB9BCA83453F18" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_8D218D083332386576189BCA83453957" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable_66F50291AAD2F3252F189BCA8345D042" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_8D218D083332386576189BCA83453957" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_DF74D9AC00C30350A5239BCA8345DE60" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_8D218D083332386576189BCA83453957" xlink:to="loc_us-gaap_SegmentDomain_DF74D9AC00C30350A5239BCA8345DE60" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_AerospaceSystemsMember" xlink:label="loc_noc_AerospaceSystemsMember_C2F4DE4E782B3942B8E49BCA8345024C" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentDomain_DF74D9AC00C30350A5239BCA8345DE60" xlink:to="loc_noc_AerospaceSystemsMember_C2F4DE4E782B3942B8E49BCA8345024C" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_InnovationSystemsMember" xlink:label="loc_noc_InnovationSystemsMember_C4B47350A0D608BA45FB9BCA8345E262" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentDomain_DF74D9AC00C30350A5239BCA8345DE60" xlink:to="loc_noc_InnovationSystemsMember_C4B47350A0D608BA45FB9BCA8345E262" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_MissionSystemsMember" xlink:label="loc_noc_MissionSystemsMember_1FABAF24FDCA5B6BF2759BCA83451298" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentDomain_DF74D9AC00C30350A5239BCA8345DE60" xlink:to="loc_noc_MissionSystemsMember_1FABAF24FDCA5B6BF2759BCA83451298" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_TechnologyServicesMember" xlink:label="loc_noc_TechnologyServicesMember_11B331223B2DCB5892A99BCA8345C2A6" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentDomain_DF74D9AC00C30350A5239BCA8345DE60" xlink:to="loc_noc_TechnologyServicesMember_11B331223B2DCB5892A99BCA8345C2A6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EntityWideRevenueMajorCustomerLineItems" xlink:label="loc_us-gaap_EntityWideRevenueMajorCustomerLineItems_90665591064CFE97377B9BCA8345FAAE" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable_66F50291AAD2F3252F189BCA8345D042" xlink:to="loc_us-gaap_EntityWideRevenueMajorCustomerLineItems_90665591064CFE97377B9BCA8345FAAE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Revenues" xlink:label="loc_us-gaap_Revenues_502708D46B4C0717E1439BCA83450C2F" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EntityWideRevenueMajorCustomerLineItems_90665591064CFE97377B9BCA8345FAAE" xlink:to="loc_us-gaap_Revenues_502708D46B4C0717E1439BCA83450C2F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ConcentrationRiskPercentage1" xlink:label="loc_us-gaap_ConcentrationRiskPercentage1_192B47D8D1D847D245B29BCA834517A4" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EntityWideRevenueMajorCustomerLineItems_90665591064CFE97377B9BCA8345FAAE" xlink:to="loc_us-gaap_ConcentrationRiskPercentage1_192B47D8D1D847D245B29BCA834517A4" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/SegmentInformationDetails3" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentReportingAbstract" xlink:label="loc_us-gaap_SegmentReportingAbstract_6C940832018D72E9BD629BCA8331A08B" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ReconciliationOfRevenueFromSegmentsToConsolidatedTable" xlink:label="loc_us-gaap_ReconciliationOfRevenueFromSegmentsToConsolidatedTable_6064D31DCAD840552A659BCA8331A04A" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentReportingAbstract_6C940832018D72E9BD629BCA8331A08B" xlink:to="loc_us-gaap_ReconciliationOfRevenueFromSegmentsToConsolidatedTable_6064D31DCAD840552A659BCA8331A04A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ContractWithCustomerBasisOfPricingAxis" xlink:label="loc_us-gaap_ContractWithCustomerBasisOfPricingAxis_4E7CD54C90C45029AAC09BCA833159F8" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ReconciliationOfRevenueFromSegmentsToConsolidatedTable_6064D31DCAD840552A659BCA8331A04A" xlink:to="loc_us-gaap_ContractWithCustomerBasisOfPricingAxis_4E7CD54C90C45029AAC09BCA833159F8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ContractWithCustomerBasisOfPricingDomain" xlink:label="loc_us-gaap_ContractWithCustomerBasisOfPricingDomain_3701E0E463D012CBF5FA9BCA83310DD8" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ContractWithCustomerBasisOfPricingAxis_4E7CD54C90C45029AAC09BCA833159F8" xlink:to="loc_us-gaap_ContractWithCustomerBasisOfPricingDomain_3701E0E463D012CBF5FA9BCA83310DD8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TimeAndMaterialsContractMember" xlink:label="loc_us-gaap_TimeAndMaterialsContractMember_ACD52396AE95975E40CC9BCA83310BF3" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ContractWithCustomerBasisOfPricingDomain_3701E0E463D012CBF5FA9BCA83310DD8" xlink:to="loc_us-gaap_TimeAndMaterialsContractMember_ACD52396AE95975E40CC9BCA83310BF3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FixedPriceContractMember" xlink:label="loc_us-gaap_FixedPriceContractMember_0A1D3DEF39EE293512C09BCA83312C94" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ContractWithCustomerBasisOfPricingDomain_3701E0E463D012CBF5FA9BCA83310DD8" xlink:to="loc_us-gaap_FixedPriceContractMember_0A1D3DEF39EE293512C09BCA83312C94" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IntersegmentEliminationMember" xlink:label="loc_us-gaap_IntersegmentEliminationMember_F0995239AB267C0710C99BCA833B3D1E" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ContractWithCustomerBasisOfPricingDomain_3701E0E463D012CBF5FA9BCA83310DD8" xlink:to="loc_us-gaap_IntersegmentEliminationMember_F0995239AB267C0710C99BCA833B3D1E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidationItemsAxis" xlink:label="loc_srt_ConsolidationItemsAxis_DBA067FBB4ABC72DE3279BCA833B179F" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ReconciliationOfRevenueFromSegmentsToConsolidatedTable_6064D31DCAD840552A659BCA8331A04A" xlink:to="loc_srt_ConsolidationItemsAxis_DBA067FBB4ABC72DE3279BCA833B179F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="loc_srt_ConsolidationItemsDomain_DDF8B2A28A96A60BF9669BCA833BA7E1" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_ConsolidationItemsAxis_DBA067FBB4ABC72DE3279BCA833B179F" xlink:to="loc_srt_ConsolidationItemsDomain_DDF8B2A28A96A60BF9669BCA833BA7E1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingSegmentsMember" xlink:label="loc_us-gaap_OperatingSegmentsMember_29047C4AEFDE3356A1D79BCA833B9483" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_ConsolidationItemsDomain_DDF8B2A28A96A60BF9669BCA833BA7E1" xlink:to="loc_us-gaap_OperatingSegmentsMember_29047C4AEFDE3356A1D79BCA833B9483" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_2B89A5E1F46BEF7D4BE89BCA833BCEEE" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ReconciliationOfRevenueFromSegmentsToConsolidatedTable_6064D31DCAD840552A659BCA8331A04A" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_2B89A5E1F46BEF7D4BE89BCA833BCEEE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_7F089CA3554934874BEB9BCA833BECAE" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_2B89A5E1F46BEF7D4BE89BCA833BCEEE" xlink:to="loc_us-gaap_SegmentDomain_7F089CA3554934874BEB9BCA833BECAE" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_AerospaceSystemsMember" xlink:label="loc_noc_AerospaceSystemsMember_FAEFEE4A4B83E9A81EE29BCA833BEF10" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentDomain_7F089CA3554934874BEB9BCA833BECAE" xlink:to="loc_noc_AerospaceSystemsMember_FAEFEE4A4B83E9A81EE29BCA833BEF10" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_InnovationSystemsMember" xlink:label="loc_noc_InnovationSystemsMember_BF674BF0D45824801DFB9BCA833B6E4C" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentDomain_7F089CA3554934874BEB9BCA833BECAE" xlink:to="loc_noc_InnovationSystemsMember_BF674BF0D45824801DFB9BCA833B6E4C" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_MissionSystemsMember" xlink:label="loc_noc_MissionSystemsMember_4961CAC6D1F63B4A97119BCA833B6FA9" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentDomain_7F089CA3554934874BEB9BCA833BECAE" xlink:to="loc_noc_MissionSystemsMember_4961CAC6D1F63B4A97119BCA833B6FA9" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_TechnologyServicesMember" xlink:label="loc_noc_TechnologyServicesMember_1A885B036CEC9AD7922B9BCA833BA91C" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentDomain_7F089CA3554934874BEB9BCA833BECAE" xlink:to="loc_noc_TechnologyServicesMember_1A885B036CEC9AD7922B9BCA833BA91C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentReportingRevenueReconcilingItemLineItems" xlink:label="loc_us-gaap_SegmentReportingRevenueReconcilingItemLineItems_54EB3A2BC0E80E3CF4AC9BCA833BEC1A" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ReconciliationOfRevenueFromSegmentsToConsolidatedTable_6064D31DCAD840552A659BCA8331A04A" xlink:to="loc_us-gaap_SegmentReportingRevenueReconcilingItemLineItems_54EB3A2BC0E80E3CF4AC9BCA833BEC1A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Revenues" xlink:label="loc_us-gaap_Revenues_6FD513E390B88BE957559BCA833B47AE" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentReportingRevenueReconcilingItemLineItems_54EB3A2BC0E80E3CF4AC9BCA833BEC1A" xlink:to="loc_us-gaap_Revenues_6FD513E390B88BE957559BCA833B47AE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ConcentrationRiskPercentage1" xlink:label="loc_us-gaap_ConcentrationRiskPercentage1_E669931E30D17FCED0179BCA833BF055" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentReportingRevenueReconcilingItemLineItems_54EB3A2BC0E80E3CF4AC9BCA833BEC1A" xlink:to="loc_us-gaap_ConcentrationRiskPercentage1_E669931E30D17FCED0179BCA833BF055" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/SegmentInformationDetails4" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentReportingAbstract" xlink:label="loc_us-gaap_SegmentReportingAbstract_F95296047436AECADE8F978A202F33B6" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable" xlink:label="loc_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable_A298E1395B1531587DA7978A202FACBA" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentReportingAbstract_F95296047436AECADE8F978A202F33B6" xlink:to="loc_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable_A298E1395B1531587DA7978A202FACBA" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_1F086E8CF4B320441410978A202F03F8" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable_A298E1395B1531587DA7978A202FACBA" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_1F086E8CF4B320441410978A202F03F8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_FE77C65C0E40843308D4978A202F0CC0" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_1F086E8CF4B320441410978A202F03F8" xlink:to="loc_us-gaap_SegmentDomain_FE77C65C0E40843308D4978A202F0CC0" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_AerospaceSystemsMember" xlink:label="loc_noc_AerospaceSystemsMember_E2D319F175289033BB37978A202FB0A5" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentDomain_FE77C65C0E40843308D4978A202F0CC0" xlink:to="loc_noc_AerospaceSystemsMember_E2D319F175289033BB37978A202FB0A5" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_InnovationSystemsMember" xlink:label="loc_noc_InnovationSystemsMember_A18A3E0188625AD78E30978A202FAB72" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentDomain_FE77C65C0E40843308D4978A202F0CC0" xlink:to="loc_noc_InnovationSystemsMember_A18A3E0188625AD78E30978A202FAB72" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_MissionSystemsMember" xlink:label="loc_noc_MissionSystemsMember_FA3807CF3CA873649D76978A202F2910" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentDomain_FE77C65C0E40843308D4978A202F0CC0" xlink:to="loc_noc_MissionSystemsMember_FA3807CF3CA873649D76978A202F2910" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_TechnologyServicesMember" xlink:label="loc_noc_TechnologyServicesMember_376BDACDAC6AEBA986D9978A202F99DD" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentDomain_FE77C65C0E40843308D4978A202F0CC0" xlink:to="loc_noc_TechnologyServicesMember_376BDACDAC6AEBA986D9978A202F99DD" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidationItemsAxis" xlink:label="loc_srt_ConsolidationItemsAxis_933E15F4CBD41745DEE2978A202FD8F4" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable_A298E1395B1531587DA7978A202FACBA" xlink:to="loc_srt_ConsolidationItemsAxis_933E15F4CBD41745DEE2978A202FD8F4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="loc_srt_ConsolidationItemsDomain_934C4AF810B289AB9760978A202F9542" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_ConsolidationItemsAxis_933E15F4CBD41745DEE2978A202FD8F4" xlink:to="loc_srt_ConsolidationItemsDomain_934C4AF810B289AB9760978A202F9542" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingSegmentsMember" xlink:label="loc_us-gaap_OperatingSegmentsMember_050AD8A95F83B545785D978A202F4A56" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_ConsolidationItemsDomain_934C4AF810B289AB9760978A202F9542" xlink:to="loc_us-gaap_OperatingSegmentsMember_050AD8A95F83B545785D978A202F4A56" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_StatementGeographicalAxis" xlink:label="loc_srt_StatementGeographicalAxis_9C6B18A73130176CF103978A202FDEF7" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable_A298E1395B1531587DA7978A202FACBA" xlink:to="loc_srt_StatementGeographicalAxis_9C6B18A73130176CF103978A202FDEF7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_SegmentGeographicalDomain" xlink:label="loc_srt_SegmentGeographicalDomain_EAA1746550991A2D0107978A202F3113" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_StatementGeographicalAxis_9C6B18A73130176CF103978A202FDEF7" xlink:to="loc_srt_SegmentGeographicalDomain_EAA1746550991A2D0107978A202F3113" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_US" xlink:label="loc_country_US_D9FE3EF5BEA3310ADCC5978A202FE96E" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_SegmentGeographicalDomain_EAA1746550991A2D0107978A202F3113" xlink:to="loc_country_US_D9FE3EF5BEA3310ADCC5978A202FE96E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_AsiaPacificMember" xlink:label="loc_srt_AsiaPacificMember_CD49F6E2D0B646975D7D978A202FC6FC" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_SegmentGeographicalDomain_EAA1746550991A2D0107978A202F3113" xlink:to="loc_srt_AsiaPacificMember_CD49F6E2D0B646975D7D978A202FC6FC" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_AllOtherGeographicRegionDomain" xlink:label="loc_noc_AllOtherGeographicRegionDomain_A78661A45B025CFEACA1978A202F44FB" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_SegmentGeographicalDomain_EAA1746550991A2D0107978A202F3113" xlink:to="loc_noc_AllOtherGeographicRegionDomain_A78661A45B025CFEACA1978A202F44FB" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IntersegmentEliminationMember" xlink:label="loc_us-gaap_IntersegmentEliminationMember_D224D0874966B3C09124978A202F9214" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_SegmentGeographicalDomain_EAA1746550991A2D0107978A202F3113" xlink:to="loc_us-gaap_IntersegmentEliminationMember_D224D0874966B3C09124978A202F9214" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems" xlink:label="loc_us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems_FC9AAA516578A5A98126978A202FF1C8" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable_A298E1395B1531587DA7978A202FACBA" xlink:to="loc_us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems_FC9AAA516578A5A98126978A202FF1C8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Revenues" xlink:label="loc_us-gaap_Revenues_9D45744C8E61BF2A90AD978A202F9E5B" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems_FC9AAA516578A5A98126978A202FF1C8" xlink:to="loc_us-gaap_Revenues_9D45744C8E61BF2A90AD978A202F9E5B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ConcentrationRiskPercentage1" xlink:label="loc_us-gaap_ConcentrationRiskPercentage1_0177E223172E131BBD60978A202F3539" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems_FC9AAA516578A5A98126978A202FF1C8" xlink:to="loc_us-gaap_ConcentrationRiskPercentage1_0177E223172E131BBD60978A202F3539" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/SegmentInformationDetails5" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentReportingAbstract" xlink:label="loc_us-gaap_SegmentReportingAbstract_1F22CA2FACCC515EA5189758B3343DDF" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_DB30A7E892FB1969C4299758B3347781" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentReportingAbstract_1F22CA2FACCC515EA5189758B3343DDF" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_DB30A7E892FB1969C4299758B3347781" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidationItemsAxis" xlink:label="loc_srt_ConsolidationItemsAxis_5DB9AFCE3FFA3D82646F9758B334CAC6" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_DB30A7E892FB1969C4299758B3347781" xlink:to="loc_srt_ConsolidationItemsAxis_5DB9AFCE3FFA3D82646F9758B334CAC6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="loc_srt_ConsolidationItemsDomain_492BEEB258030AAAB8379758B334A63E" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_ConsolidationItemsAxis_5DB9AFCE3FFA3D82646F9758B334CAC6" xlink:to="loc_srt_ConsolidationItemsDomain_492BEEB258030AAAB8379758B334A63E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IntersegmentEliminationMember" xlink:label="loc_us-gaap_IntersegmentEliminationMember_D4675B59C300B19C4DA29758B334D5C8" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_ConsolidationItemsDomain_492BEEB258030AAAB8379758B334A63E" xlink:to="loc_us-gaap_IntersegmentEliminationMember_D4675B59C300B19C4DA29758B334D5C8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_BD3EAD0D31824B3A3D809758B334C15E" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_DB30A7E892FB1969C4299758B3347781" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_BD3EAD0D31824B3A3D809758B334C15E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_A68CA29CF2C4589BDD709758B334904A" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_BD3EAD0D31824B3A3D809758B334C15E" xlink:to="loc_us-gaap_SegmentDomain_A68CA29CF2C4589BDD709758B334904A" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_AerospaceSystemsMember" xlink:label="loc_noc_AerospaceSystemsMember_70515DB2CE18AB8C0B459758B334A7E0" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentDomain_A68CA29CF2C4589BDD709758B334904A" xlink:to="loc_noc_AerospaceSystemsMember_70515DB2CE18AB8C0B459758B334A7E0" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_InnovationSystemsMember" xlink:label="loc_noc_InnovationSystemsMember_60E3A6B4B25E051E050A9758B3346B91" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentDomain_A68CA29CF2C4589BDD709758B334904A" xlink:to="loc_noc_InnovationSystemsMember_60E3A6B4B25E051E050A9758B3346B91" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_MissionSystemsMember" xlink:label="loc_noc_MissionSystemsMember_0D1D4D20F45600B653CE9758B3342BBD" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentDomain_A68CA29CF2C4589BDD709758B334904A" xlink:to="loc_noc_MissionSystemsMember_0D1D4D20F45600B653CE9758B3342BBD" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_TechnologyServicesMember" xlink:label="loc_noc_TechnologyServicesMember_00A2ED6D7ACBF9C16EBB9758B334A3A5" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentDomain_A68CA29CF2C4589BDD709758B334904A" xlink:to="loc_noc_TechnologyServicesMember_00A2ED6D7ACBF9C16EBB9758B334A3A5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_E08667876E5D790E78989758B334B4A5" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_DB30A7E892FB1969C4299758B3347781" xlink:to="loc_us-gaap_SegmentReportingInformationLineItems_E08667876E5D790E78989758B334B4A5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Revenues" xlink:label="loc_us-gaap_Revenues_79E8A1680E30472D80C09758B3348C78" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_E08667876E5D790E78989758B334B4A5" xlink:to="loc_us-gaap_Revenues_79E8A1680E30472D80C09758B3348C78" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentReportingInformationOperatingIncomeLossAbstract" xlink:label="loc_us-gaap_SegmentReportingInformationOperatingIncomeLossAbstract_43FB9A4A255C287C6FDB9758B3348B65" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_E08667876E5D790E78989758B334B4A5" xlink:to="loc_us-gaap_SegmentReportingInformationOperatingIncomeLossAbstract_43FB9A4A255C287C6FDB9758B3348B65" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:label="loc_us-gaap_OperatingIncomeLoss_749BD048AE979AA2D28D9758B3342641" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentReportingInformationOperatingIncomeLossAbstract_43FB9A4A255C287C6FDB9758B3348B65" xlink:to="loc_us-gaap_OperatingIncomeLoss_749BD048AE979AA2D28D9758B3342641" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/SegmentInformationDetails6" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentReportingAbstract" xlink:label="loc_us-gaap_SegmentReportingAbstract_091983FAC3737C46B98D978A2020CA00" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_C72556B1A30C517CFA4F978A20207FB7" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentReportingAbstract_091983FAC3737C46B98D978A2020CA00" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_C72556B1A30C517CFA4F978A20207FB7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidationItemsAxis" xlink:label="loc_srt_ConsolidationItemsAxis_BFE65408BD771658AA10978A2020EC7E" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_C72556B1A30C517CFA4F978A20207FB7" xlink:to="loc_srt_ConsolidationItemsAxis_BFE65408BD771658AA10978A2020EC7E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="loc_srt_ConsolidationItemsDomain_B4B4E27F842C694B2480978A2020A666" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_ConsolidationItemsAxis_BFE65408BD771658AA10978A2020EC7E" xlink:to="loc_srt_ConsolidationItemsDomain_B4B4E27F842C694B2480978A2020A666" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingSegmentsMember" xlink:label="loc_us-gaap_OperatingSegmentsMember_775FC959559AD8BC6F0A978A202054D9" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_ConsolidationItemsDomain_B4B4E27F842C694B2480978A2020A666" xlink:to="loc_us-gaap_OperatingSegmentsMember_775FC959559AD8BC6F0A978A202054D9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CorporateNonSegmentMember" xlink:label="loc_us-gaap_CorporateNonSegmentMember_BF796E15ED66C4F1A5B7978A20206E64" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_ConsolidationItemsDomain_B4B4E27F842C694B2480978A2020A666" xlink:to="loc_us-gaap_CorporateNonSegmentMember_BF796E15ED66C4F1A5B7978A20206E64" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_52588D85512A081ABFE9978A202093E4" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_C72556B1A30C517CFA4F978A20207FB7" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_52588D85512A081ABFE9978A202093E4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_C1E6108B9BD99ACD9335978A202078A0" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_52588D85512A081ABFE9978A202093E4" xlink:to="loc_us-gaap_SegmentDomain_C1E6108B9BD99ACD9335978A202078A0" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_AerospaceSystemsMember" xlink:label="loc_noc_AerospaceSystemsMember_4D702428C31442FDC7BA978A20202E3D" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentDomain_C1E6108B9BD99ACD9335978A202078A0" xlink:to="loc_noc_AerospaceSystemsMember_4D702428C31442FDC7BA978A20202E3D" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_InnovationSystemsMember" xlink:label="loc_noc_InnovationSystemsMember_D4052AB6B5743F2670EA978A20206753" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentDomain_C1E6108B9BD99ACD9335978A202078A0" xlink:to="loc_noc_InnovationSystemsMember_D4052AB6B5743F2670EA978A20206753" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_MissionSystemsMember" xlink:label="loc_noc_MissionSystemsMember_ADBB37CE34F3B9B6A395978A20202ADC" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentDomain_C1E6108B9BD99ACD9335978A202078A0" xlink:to="loc_noc_MissionSystemsMember_ADBB37CE34F3B9B6A395978A20202ADC" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_TechnologyServicesMember" xlink:label="loc_noc_TechnologyServicesMember_04D05438556121F672B8978A2020EE56" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentDomain_C1E6108B9BD99ACD9335978A202078A0" xlink:to="loc_noc_TechnologyServicesMember_04D05438556121F672B8978A2020EE56" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_2FB026FA009DCBDEF32E978A20204884" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_C72556B1A30C517CFA4F978A20207FB7" xlink:to="loc_us-gaap_SegmentReportingInformationLineItems_2FB026FA009DCBDEF32E978A20204884" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Assets" xlink:label="loc_us-gaap_Assets_4EBB16C2812E95C6E8D9978A2020EE00" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_2FB026FA009DCBDEF32E978A20204884" xlink:to="loc_us-gaap_Assets_4EBB16C2812E95C6E8D9978A2020EE00" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/SegmentInformationDetails7" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentReportingAbstract" xlink:label="loc_us-gaap_SegmentReportingAbstract_1E88DFDA10E4E8ED0FAE978A2020D64A" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_DEBE5FBC5FEBA735AF54978A202043F2" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentReportingAbstract_1E88DFDA10E4E8ED0FAE978A2020D64A" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_DEBE5FBC5FEBA735AF54978A202043F2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_2F7031DCB4F0B3479296978A2020A20C" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_DEBE5FBC5FEBA735AF54978A202043F2" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_2F7031DCB4F0B3479296978A2020A20C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_F373BD2F56896A7B64F6978A20203561" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_2F7031DCB4F0B3479296978A2020A20C" xlink:to="loc_us-gaap_SegmentDomain_F373BD2F56896A7B64F6978A20203561" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_AerospaceSystemsMember" xlink:label="loc_noc_AerospaceSystemsMember_EC6DDEB744C6BDA5B46D978A20201F52" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentDomain_F373BD2F56896A7B64F6978A20203561" xlink:to="loc_noc_AerospaceSystemsMember_EC6DDEB744C6BDA5B46D978A20201F52" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_InnovationSystemsMember" xlink:label="loc_noc_InnovationSystemsMember_45D48A73252BC80AE6F7978A20206271" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentDomain_F373BD2F56896A7B64F6978A20203561" xlink:to="loc_noc_InnovationSystemsMember_45D48A73252BC80AE6F7978A20206271" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_MissionSystemsMember" xlink:label="loc_noc_MissionSystemsMember_6F571C30982EFFFF1B7A978A202038D3" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentDomain_F373BD2F56896A7B64F6978A20203561" xlink:to="loc_noc_MissionSystemsMember_6F571C30982EFFFF1B7A978A202038D3" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_TechnologyServicesMember" xlink:label="loc_noc_TechnologyServicesMember_21496D0E0C29D272671F978A202007B0" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentDomain_F373BD2F56896A7B64F6978A20203561" xlink:to="loc_noc_TechnologyServicesMember_21496D0E0C29D272671F978A202007B0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CorporateMember" xlink:label="loc_us-gaap_CorporateMember_9699726A2041AC1546B3978A2020E496" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentDomain_F373BD2F56896A7B64F6978A20203561" xlink:to="loc_us-gaap_CorporateMember_9699726A2041AC1546B3978A2020E496" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_CF9DBF5D21B168F18CA7978A2020260D" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_DEBE5FBC5FEBA735AF54978A202043F2" xlink:to="loc_us-gaap_SegmentReportingInformationLineItems_CF9DBF5D21B168F18CA7978A2020260D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentReportingInformationAdditionalInformationAbstract" xlink:label="loc_us-gaap_SegmentReportingInformationAdditionalInformationAbstract_188C58941830A9B56107978A20203F61" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_CF9DBF5D21B168F18CA7978A2020260D" xlink:to="loc_us-gaap_SegmentReportingInformationAdditionalInformationAbstract_188C58941830A9B56107978A20203F61" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:label="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_371C035008D75554A91A978A20203FAD" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentReportingInformationAdditionalInformationAbstract_188C58941830A9B56107978A20203F61" xlink:to="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_371C035008D75554A91A978A20203FAD" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DepreciationDepletionAndAmortization" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_4E06F27D4CD0ACA5494E978A20205E44" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentReportingInformationAdditionalInformationAbstract_188C58941830A9B56107978A20203F61" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_4E06F27D4CD0ACA5494E978A20205E44" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/SegmentInformationTables" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentReportingAbstract" xlink:label="loc_us-gaap_SegmentReportingAbstract_CC645D6E97961294B4C0977AA48FBCFD" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTextBlock" xlink:label="loc_us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTextBlock_9E6B3167686469E65BDB977AA4908A45" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentReportingAbstract_CC645D6E97961294B4C0977AA48FBCFD" xlink:to="loc_us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTextBlock_9E6B3167686469E65BDB977AA4908A45" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfRevenueByMajorCustomersByReportingSegmentsTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfRevenueByMajorCustomersByReportingSegmentsTableTextBlock_895F2B2B18580E7853C2977AA490818F" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentReportingAbstract_CC645D6E97961294B4C0977AA48FBCFD" xlink:to="loc_us-gaap_ScheduleOfRevenueByMajorCustomersByReportingSegmentsTableTextBlock_895F2B2B18580E7853C2977AA490818F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ReconciliationOfRevenueFromSegmentsToConsolidatedTextBlock" xlink:label="loc_us-gaap_ReconciliationOfRevenueFromSegmentsToConsolidatedTextBlock_EC4FE91EB0709F1E28E6977AA490BD9A" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentReportingAbstract_CC645D6E97961294B4C0977AA48FBCFD" xlink:to="loc_us-gaap_ReconciliationOfRevenueFromSegmentsToConsolidatedTextBlock_EC4FE91EB0709F1E28E6977AA490BD9A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RevenueFromExternalCustomersByGeographicAreasTableTextBlock" xlink:label="loc_us-gaap_RevenueFromExternalCustomersByGeographicAreasTableTextBlock_FCFAE72A3D23C71FB51D977AA4900362" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentReportingAbstract_CC645D6E97961294B4C0977AA48FBCFD" xlink:to="loc_us-gaap_RevenueFromExternalCustomersByGeographicAreasTableTextBlock_FCFAE72A3D23C71FB51D977AA4900362" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_SegmentReportingInformationIntersegmentSalesAndOperatingIncomeTableTextBlock" xlink:label="loc_noc_SegmentReportingInformationIntersegmentSalesAndOperatingIncomeTableTextBlock_6293D85C69B65B3294B3977AA49097AC" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentReportingAbstract_CC645D6E97961294B4C0977AA48FBCFD" xlink:to="loc_noc_SegmentReportingInformationIntersegmentSalesAndOperatingIncomeTableTextBlock_6293D85C69B65B3294B3977AA49097AC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ReconciliationOfAssetsFromSegmentToConsolidatedTextBlock" xlink:label="loc_us-gaap_ReconciliationOfAssetsFromSegmentToConsolidatedTextBlock_8337DD71BD29A2DD552E977AA4915EE8" xlink:type="locator" />
    <link:presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentReportingAbstract_CC645D6E97961294B4C0977AA48FBCFD" xlink:to="loc_us-gaap_ReconciliationOfAssetsFromSegmentToConsolidatedTextBlock_8337DD71BD29A2DD552E977AA4915EE8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ReconciliationOfOtherSignificantReconcilingItemsFromSegmentsToConsolidatedTextBlock" xlink:label="loc_us-gaap_ReconciliationOfOtherSignificantReconcilingItemsFromSegmentsToConsolidatedTextBlock_41793643329E80EA6453977AA4917EB2" xlink:type="locator" />
    <link:presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentReportingAbstract_CC645D6E97961294B4C0977AA48FBCFD" xlink:to="loc_us-gaap_ReconciliationOfOtherSignificantReconcilingItemsFromSegmentsToConsolidatedTextBlock_41793643329E80EA6453977AA4917EB2" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/StockCompensationPlansAndOtherCompensationArrangements" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract" xlink:label="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_8CD690608B1480ACB367977AA4B960FA" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock" xlink:label="loc_us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_79F1A3C8FD8D5A1C4895977AA4B9F402" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_8CD690608B1480ACB367977AA4B960FA" xlink:to="loc_us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_79F1A3C8FD8D5A1C4895977AA4B9F402" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/StockCompensationPlansAndOtherCompensationArrangementsDetails1" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract" xlink:label="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_6E9A94AD466F40C5E1A99BB66C4D8016" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AllocatedShareBasedCompensationExpense" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_7CB168F818FC5800BAAB9BB66C5750E0" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_6E9A94AD466F40C5E1A99BB66C4D8016" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpense_7CB168F818FC5800BAAB9BB66C5750E0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense_34DA394DA8EF9F5D93679BB66C576023" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_6E9A94AD466F40C5E1A99BB66C4D8016" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense_34DA394DA8EF9F5D93679BB66C576023" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/StockCompensationPlansAndOtherCompensationArrangementsDetails2" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract" xlink:label="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_1741994AFAF940449C47977AA4A938C8" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_82B8D8C1906226F2A649977AA4A9471E" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_1741994AFAF940449C47977AA4A938C8" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_82B8D8C1906226F2A649977AA4A9471E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="loc_us-gaap_AwardTypeAxis_D9DD074567EB17C27DDA977AA4AA6B63" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_82B8D8C1906226F2A649977AA4A9471E" xlink:to="loc_us-gaap_AwardTypeAxis_D9DD074567EB17C27DDA977AA4AA6B63" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_C6F3D5645B5D063491F4977AA4AA041A" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AwardTypeAxis_D9DD074567EB17C27DDA977AA4AA6B63" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_C6F3D5645B5D063491F4977AA4AA041A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_D987DFB4D022B15A792A977AA4AA063E" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_82B8D8C1906226F2A649977AA4A9471E" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_D987DFB4D022B15A792A977AA4AA063E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms_8582C51AA2DE985E9914977AA4AAABB6" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_D987DFB4D022B15A792A977AA4AA063E" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms_8582C51AA2DE985E9914977AA4AAABB6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_D1C386FD46998222070C977AA4ABD931" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_D987DFB4D022B15A792A977AA4AA063E" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_D1C386FD46998222070C977AA4ABD931" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_EBB600FB21F9373EC13E977AA4AB0B0E" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_D1C386FD46998222070C977AA4ABD931" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_EBB600FB21F9373EC13E977AA4AB0B0E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_06A874F92ED73FB86590977AA4AB2B26" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_D1C386FD46998222070C977AA4ABD931" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_06A874F92ED73FB86590977AA4AB2B26" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_F380896AD371531CC71E977AA4AB437F" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_D1C386FD46998222070C977AA4ABD931" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_F380896AD371531CC71E977AA4AB437F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_B73E212D2B2A619C5222977AA4ACEC05" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_D1C386FD46998222070C977AA4ABD931" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_B73E212D2B2A619C5222977AA4ACEC05" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_8470DFBFA7A866B76C73977AA4AC7A92" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_D1C386FD46998222070C977AA4ABD931" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_8470DFBFA7A866B76C73977AA4AC7A92" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_8D0E47C2041EB1B9AA0F977AA4AC201C" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_D987DFB4D022B15A792A977AA4AA063E" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_8D0E47C2041EB1B9AA0F977AA4AC201C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_D0582408D786A3CE2ED5977AA4ACC3D9" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_8D0E47C2041EB1B9AA0F977AA4AC201C" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_D0582408D786A3CE2ED5977AA4ACC3D9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_64754DA2684D9C5724B4977AA4AC7C40" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_8D0E47C2041EB1B9AA0F977AA4AC201C" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_64754DA2684D9C5724B4977AA4AC7C40" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_D8D3CD18D0586F319976977AA4AC468D" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_8D0E47C2041EB1B9AA0F977AA4AC201C" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_D8D3CD18D0586F319976977AA4AC468D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_53C6F56098F62ABE6DBD977AA4ADB8DC" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_8D0E47C2041EB1B9AA0F977AA4AC201C" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_53C6F56098F62ABE6DBD977AA4ADB8DC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_C0F283B7E437933C0B6A977AA4AD1C58" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_8D0E47C2041EB1B9AA0F977AA4AC201C" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_C0F283B7E437933C0B6A977AA4AD1C58" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/StockCompensationPlansAndOtherCompensationArrangementsDetails3" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract" xlink:label="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_0ABE11B168AC5234A7CA9BC75B3F651D" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_8818E1D89A89B941517D9BC75B3F25A0" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_0ABE11B168AC5234A7CA9BC75B3F651D" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_8818E1D89A89B941517D9BC75B3F25A0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="loc_us-gaap_AwardTypeAxis_702607DE15A0F363A9DF9BC75B3FD317" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_8818E1D89A89B941517D9BC75B3F25A0" xlink:to="loc_us-gaap_AwardTypeAxis_702607DE15A0F363A9DF9BC75B3FD317" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_822F2D89683B242ED2B69BC75B3FFB90" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AwardTypeAxis_702607DE15A0F363A9DF9BC75B3FD317" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_822F2D89683B242ED2B69BC75B3FFB90" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_CashUnitsAndCashPerformanceUnitsMember" xlink:label="loc_noc_CashUnitsAndCashPerformanceUnitsMember_F440EA27E92A17B6903C9BC75B3F3E8E" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_822F2D89683B242ED2B69BC75B3FFB90" xlink:to="loc_noc_CashUnitsAndCashPerformanceUnitsMember_F440EA27E92A17B6903C9BC75B3F3E8E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeAxis" xlink:label="loc_srt_RangeAxis_A54C4130614A917F4FBD9BC75B3F6122" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_8818E1D89A89B941517D9BC75B3F25A0" xlink:to="loc_srt_RangeAxis_A54C4130614A917F4FBD9BC75B3F6122" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeMember" xlink:label="loc_srt_RangeMember_912EFCB349564AFB68D49BC75B3F344F" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RangeAxis_A54C4130614A917F4FBD9BC75B3F6122" xlink:to="loc_srt_RangeMember_912EFCB349564AFB68D49BC75B3F344F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MinimumMember" xlink:label="loc_srt_MinimumMember_BAC88839A9506880E3D19BC75B3F2FB2" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RangeMember_912EFCB349564AFB68D49BC75B3F344F" xlink:to="loc_srt_MinimumMember_BAC88839A9506880E3D19BC75B3F2FB2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MaximumMember" xlink:label="loc_srt_MaximumMember_548507779CC3584282429BC75B3F3068" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RangeMember_912EFCB349564AFB68D49BC75B3F344F" xlink:to="loc_srt_MaximumMember_548507779CC3584282429BC75B3F3068" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PlanNameAxis" xlink:label="loc_us-gaap_PlanNameAxis_38892F1CF73A4A83F5B39BC75B3F57FC" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_8818E1D89A89B941517D9BC75B3F25A0" xlink:to="loc_us-gaap_PlanNameAxis_38892F1CF73A4A83F5B39BC75B3F57FC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PlanNameDomain" xlink:label="loc_us-gaap_PlanNameDomain_22FA7083F05BAB953F439BC75B3F55D6" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanNameAxis_38892F1CF73A4A83F5B39BC75B3F57FC" xlink:to="loc_us-gaap_PlanNameDomain_22FA7083F05BAB953F439BC75B3F55D6" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_A2011LongTermIncentiveStockPlanMember" xlink:label="loc_noc_A2011LongTermIncentiveStockPlanMember_AEA24CE28ADCE0B65CEC9BC75B3F368F" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanNameDomain_22FA7083F05BAB953F439BC75B3F55D6" xlink:to="loc_noc_A2011LongTermIncentiveStockPlanMember_AEA24CE28ADCE0B65CEC9BC75B3F368F" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_Amended2011PlanDomain" xlink:label="loc_noc_Amended2011PlanDomain_120F06BAA26E41E7A41F9BC75B3FE467" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanNameDomain_22FA7083F05BAB953F439BC75B3F55D6" xlink:to="loc_noc_Amended2011PlanDomain_120F06BAA26E41E7A41F9BC75B3FE467" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_GrantsDuring2010AndAfterMember" xlink:label="loc_noc_GrantsDuring2010AndAfterMember_1305DA31052A02DDE6509BC75B3F38ED" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanNameDomain_22FA7083F05BAB953F439BC75B3F55D6" xlink:to="loc_noc_GrantsDuring2010AndAfterMember_1305DA31052A02DDE6509BC75B3F38ED" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_158391635457B0455B349BC75B496D78" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_8818E1D89A89B941517D9BC75B3F25A0" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_158391635457B0455B349BC75B496D78" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_55DE182FCDE305299AEA9BC75B493AEF" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_158391635457B0455B349BC75B496D78" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_55DE182FCDE305299AEA9BC75B493AEF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredCompensationCashBasedArrangementsLiabilityCurrent" xlink:label="loc_us-gaap_DeferredCompensationCashBasedArrangementsLiabilityCurrent_EEC4719B8B606180F9959BC75B498185" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_158391635457B0455B349BC75B496D78" xlink:to="loc_us-gaap_DeferredCompensationCashBasedArrangementsLiabilityCurrent_EEC4719B8B606180F9959BC75B498185" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_DBC8BD945A70C0B940619BC75B492030" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_158391635457B0455B349BC75B496D78" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_DBC8BD945A70C0B940619BC75B492030" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_FA1FE1A714482E0A9D399BC75B492695" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_158391635457B0455B349BC75B496D78" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_FA1FE1A714482E0A9D399BC75B492695" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_StockIssuedDuringPeriodFairValueGrantDateShareBasedCompensation" xlink:label="loc_noc_StockIssuedDuringPeriodFairValueGrantDateShareBasedCompensation_70D68B6AE0BC7329042F9BC75B49A93D" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_158391635457B0455B349BC75B496D78" xlink:to="loc_noc_StockIssuedDuringPeriodFairValueGrantDateShareBasedCompensation_70D68B6AE0BC7329042F9BC75B49A93D" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardGrantsPercentageFinancialMetricMetExceeded" xlink:label="loc_noc_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardGrantsPercentageFinancialMetricMetExceeded_9C8A7A7D5E658ABE52449BC75B4916E6" xlink:type="locator" />
    <link:presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_158391635457B0455B349BC75B496D78" xlink:to="loc_noc_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardGrantsPercentageFinancialMetricMetExceeded_9C8A7A7D5E658ABE52449BC75B4916E6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_4F5B1678BFB42125902D9BC75B49634A" xlink:type="locator" />
    <link:presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_158391635457B0455B349BC75B496D78" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_4F5B1678BFB42125902D9BC75B49634A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized_4E57AAD557696BB50DC79BC75B497C15" xlink:type="locator" />
    <link:presentationArc order="8" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_158391635457B0455B349BC75B496D78" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized_4E57AAD557696BB50DC79BC75B497C15" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardRequisiteServicePeriod1" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardRequisiteServicePeriod1_F59FDDDAA00706C039DB9BC75B499C77" xlink:type="locator" />
    <link:presentationArc order="9" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_158391635457B0455B349BC75B496D78" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardRequisiteServicePeriod1_F59FDDDAA00706C039DB9BC75B499C77" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/StockCompensationPlansAndOtherCompensationArrangementsTables" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract" xlink:label="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_4DDDB0DBB5B8952CB2C9977AA4B6DD5A" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceBasedUnitsVestedAndExpectedToVestTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceBasedUnitsVestedAndExpectedToVestTableTextBlock_E5F9AE0CE44ED876777C977AA4B66A44" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_4DDDB0DBB5B8952CB2C9977AA4B6DD5A" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceBasedUnitsVestedAndExpectedToVestTableTextBlock_E5F9AE0CE44ED876777C977AA4B66A44" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_CashUnitsandCashPerformanceUnitsAggregatePayoutAmountTableTextBlock" xlink:label="loc_noc_CashUnitsandCashPerformanceUnitsAggregatePayoutAmountTableTextBlock_3AE358C29AC69CA0FA80977AA4B728A7" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_4DDDB0DBB5B8952CB2C9977AA4B6DD5A" xlink:to="loc_noc_CashUnitsandCashPerformanceUnitsAggregatePayoutAmountTableTextBlock_3AE358C29AC69CA0FA80977AA4B728A7" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/SummaryOfSignificantAccountingPolicies" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:label="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_7AEE156290D0FD208202977AA703AC65" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureAndSignificantAccountingPoliciesTextBlock" xlink:label="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureAndSignificantAccountingPoliciesTextBlock_8BC6307DC5C86086BED3977AA703B17F" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_7AEE156290D0FD208202977AA703AC65" xlink:to="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureAndSignificantAccountingPoliciesTextBlock_8BC6307DC5C86086BED3977AA703B17F" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/SummaryOfSignificantAccountingPoliciesDetails1" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:label="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_5C637021AB8BC43C9B7F9F381B757A85" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_1D72C2FCB2BA9E88F9F29F381B759ADF" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_5C637021AB8BC43C9B7F9F381B757A85" xlink:to="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_1D72C2FCB2BA9E88F9F29F381B759ADF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BalanceSheetLocationAxis" xlink:label="loc_us-gaap_BalanceSheetLocationAxis_483577BB122CD0F6251A9F381B854B4F" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_1D72C2FCB2BA9E88F9F29F381B759ADF" xlink:to="loc_us-gaap_BalanceSheetLocationAxis_483577BB122CD0F6251A9F381B854B4F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_B21E550659D3A15AF8589F381B850DB1" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_483577BB122CD0F6251A9F381B854B4F" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_B21E550659D3A15AF8589F381B850DB1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LiabilitiesTotalMember" xlink:label="loc_us-gaap_LiabilitiesTotalMember_9DD60042CB3754BF73F09F381B85CC9D" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_B21E550659D3A15AF8589F381B850DB1" xlink:to="loc_us-gaap_LiabilitiesTotalMember_9DD60042CB3754BF73F09F381B85CC9D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AssetsTotalMember" xlink:label="loc_us-gaap_AssetsTotalMember_218C437F20683BA408239F381B850B1F" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_B21E550659D3A15AF8589F381B850DB1" xlink:to="loc_us-gaap_AssetsTotalMember_218C437F20683BA408239F381B850B1F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:label="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_7F9CCF7D31D96971598E9F381B857912" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_1D72C2FCB2BA9E88F9F29F381B759ADF" xlink:to="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_7F9CCF7D31D96971598E9F381B857912" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TypeOfAdoptionMember" xlink:label="loc_us-gaap_TypeOfAdoptionMember_7FD12244DC470CD19E2B9F381B85DB9F" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_7F9CCF7D31D96971598E9F381B857912" xlink:to="loc_us-gaap_TypeOfAdoptionMember_7FD12244DC470CD19E2B9F381B85DB9F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountingStandardsUpdate201409Member" xlink:label="loc_us-gaap_AccountingStandardsUpdate201409Member_56E75CE2B4AD0E0329189F381B85864F" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_TypeOfAdoptionMember_7FD12244DC470CD19E2B9F381B85DB9F" xlink:to="loc_us-gaap_AccountingStandardsUpdate201409Member_56E75CE2B4AD0E0329189F381B85864F" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_AccountingStandardsUpdate201802Member" xlink:label="loc_noc_AccountingStandardsUpdate201802Member_FB7BCA417A44601C550B9F381B85458E" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_TypeOfAdoptionMember_7FD12244DC470CD19E2B9F381B85DB9F" xlink:to="loc_noc_AccountingStandardsUpdate201802Member_FB7BCA417A44601C550B9F381B85458E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountingStandardsUpdate201602Member" xlink:label="loc_us-gaap_AccountingStandardsUpdate201602Member_11B165CD64AF952FC74C9F381B85D028" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_TypeOfAdoptionMember_7FD12244DC470CD19E2B9F381B85DB9F" xlink:to="loc_us-gaap_AccountingStandardsUpdate201602Member_11B165CD64AF952FC74C9F381B85D028" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountingStandardsUpdate201601Member" xlink:label="loc_us-gaap_AccountingStandardsUpdate201601Member_DD5CF6314CC19A29E7E79F619ECE0D7C" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_TypeOfAdoptionMember_7FD12244DC470CD19E2B9F381B85DB9F" xlink:to="loc_us-gaap_AccountingStandardsUpdate201601Member_DD5CF6314CC19A29E7E79F619ECE0D7C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis" xlink:label="loc_us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_37C6EAB56A0F31E35ABA9F381B85624B" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_1D72C2FCB2BA9E88F9F29F381B759ADF" xlink:to="loc_us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_37C6EAB56A0F31E35ABA9F381B85624B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ChangeInAccountingPrincipleMember" xlink:label="loc_us-gaap_ChangeInAccountingPrincipleMember_834C7F8BAF0EE24DB4569F381B852A51" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_37C6EAB56A0F31E35ABA9F381B85624B" xlink:to="loc_us-gaap_ChangeInAccountingPrincipleMember_834C7F8BAF0EE24DB4569F381B852A51" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_DefinedBenefitPlanActuarialGainLossImmediateRecognitionasComponentinNetPeriodicBenefitCostCreditMember" xlink:label="loc_noc_DefinedBenefitPlanActuarialGainLossImmediateRecognitionasComponentinNetPeriodicBenefitCostCreditMember_93B0BBB33A69749CCD439F381B85003C" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ChangeInAccountingPrincipleMember_834C7F8BAF0EE24DB4569F381B852A51" xlink:to="loc_noc_DefinedBenefitPlanActuarialGainLossImmediateRecognitionasComponentinNetPeriodicBenefitCostCreditMember_93B0BBB33A69749CCD439F381B85003C" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_DefinedBenefitPlanActuarialGainLossImmediateRecognitionasComponentinNetPeriodicBenefitCostCreditTaxMemberMember" xlink:label="loc_noc_DefinedBenefitPlanActuarialGainLossImmediateRecognitionasComponentinNetPeriodicBenefitCostCreditTaxMemberMember_ED5812F45275860200E69F381B855C09" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ChangeInAccountingPrincipleMember_834C7F8BAF0EE24DB4569F381B852A51" xlink:to="loc_noc_DefinedBenefitPlanActuarialGainLossImmediateRecognitionasComponentinNetPeriodicBenefitCostCreditTaxMemberMember_ED5812F45275860200E69F381B855C09" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RestatementAxis" xlink:label="loc_srt_RestatementAxis_3411FE8BFF70D6A01A6D9F381B85012B" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_1D72C2FCB2BA9E88F9F29F381B759ADF" xlink:to="loc_srt_RestatementAxis_3411FE8BFF70D6A01A6D9F381B85012B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RestatementDomain" xlink:label="loc_srt_RestatementDomain_F2411C0FF1CBF9395B359F381B853435" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RestatementAxis_3411FE8BFF70D6A01A6D9F381B85012B" xlink:to="loc_srt_RestatementDomain_F2411C0FF1CBF9395B359F381B853435" xlink:type="arc" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RestatementDomain_F2411C0FF1CBF9395B359F381B853435" xlink:to="loc_noc_DefinedBenefitPlanActuarialGainLossImmediateRecognitionasComponentinNetPeriodicBenefitCostCreditTaxMemberMember_ED5812F45275860200E69F381B855C09" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementMember" xlink:label="loc_us-gaap_NewAccountingPronouncementMember_A7BE27368641D7D902639F381B85945C" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RestatementDomain_F2411C0FF1CBF9395B359F381B853435" xlink:to="loc_us-gaap_NewAccountingPronouncementMember_A7BE27368641D7D902639F381B85945C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_914B213F06C073E7C6349F381B858DBA" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_1D72C2FCB2BA9E88F9F29F381B759ADF" xlink:to="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_914B213F06C073E7C6349F381B858DBA" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption" xlink:label="loc_us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption_907A2C7003DD6D2683839F381B8513B0" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_914B213F06C073E7C6349F381B858DBA" xlink:to="loc_us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption_907A2C7003DD6D2683839F381B8513B0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoptionQuantification" xlink:label="loc_us-gaap_NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoptionQuantification_2F5E01B4330C947200C59F381B8598FC" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_914B213F06C073E7C6349F381B858DBA" xlink:to="loc_us-gaap_NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoptionQuantification_2F5E01B4330C947200C59F381B8598FC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountingPoliciesAbstract" xlink:label="loc_us-gaap_AccountingPoliciesAbstract_8F1B4FACBB74E17D189A9F381B850F8B" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_5C637021AB8BC43C9B7F9F381B757A85" xlink:to="loc_us-gaap_AccountingPoliciesAbstract_8F1B4FACBB74E17D189A9F381B850F8B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ResearchAndDevelopmentExpense" xlink:label="loc_us-gaap_ResearchAndDevelopmentExpense_FA0417323409460A3E379F381B85B9D7" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_8F1B4FACBB74E17D189A9F381B850F8B" xlink:to="loc_us-gaap_ResearchAndDevelopmentExpense_FA0417323409460A3E379F381B85B9D7" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_ResearchandDevelopmentasaPercentofSales" xlink:label="loc_noc_ResearchandDevelopmentasaPercentofSales_FFAE79D4382E554457979F381B85ED65" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_8F1B4FACBB74E17D189A9F381B850F8B" xlink:to="loc_noc_ResearchandDevelopmentasaPercentofSales_FFAE79D4382E554457979F381B85ED65" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CashSurrenderValueOfLifeInsurance" xlink:label="loc_us-gaap_CashSurrenderValueOfLifeInsurance_33772B10D42B3537DDF19F381B944488" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_8F1B4FACBB74E17D189A9F381B850F8B" xlink:to="loc_us-gaap_CashSurrenderValueOfLifeInsurance_33772B10D42B3537DDF19F381B944488" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_F8D92BF556C631CE91009F381B94CBD1" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_8F1B4FACBB74E17D189A9F381B850F8B" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_F8D92BF556C631CE91009F381B94CBD1" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/SummaryOfSignificantAccountingPoliciesDetails2" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:label="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_EC591E3D83A3169841A79F8E2029CB11" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable" xlink:label="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_9B826C686627F56EC0F19F8E20295201" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_EC591E3D83A3169841A79F8E2029CB11" xlink:to="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_9B826C686627F56EC0F19F8E20295201" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BalanceSheetLocationAxis" xlink:label="loc_us-gaap_BalanceSheetLocationAxis_D33E83B9EE353711A3FA9F8E20291973" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_9B826C686627F56EC0F19F8E20295201" xlink:to="loc_us-gaap_BalanceSheetLocationAxis_D33E83B9EE353711A3FA9F8E20291973" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_82A57117D28C7A154F0F9F8E20299266" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_D33E83B9EE353711A3FA9F8E20291973" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_82A57117D28C7A154F0F9F8E20299266" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LiabilitiesTotalMember" xlink:label="loc_us-gaap_LiabilitiesTotalMember_664F649C27894BBEF5E59F8E2029D28A" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_82A57117D28C7A154F0F9F8E20299266" xlink:to="loc_us-gaap_LiabilitiesTotalMember_664F649C27894BBEF5E59F8E2029D28A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:label="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_2C8DBE1118B2E10A286E9F8E2029AF5C" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_9B826C686627F56EC0F19F8E20295201" xlink:to="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_2C8DBE1118B2E10A286E9F8E2029AF5C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TypeOfAdoptionMember" xlink:label="loc_us-gaap_TypeOfAdoptionMember_2143727E0A9E6187E5979F8E202996FE" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_2C8DBE1118B2E10A286E9F8E2029AF5C" xlink:to="loc_us-gaap_TypeOfAdoptionMember_2143727E0A9E6187E5979F8E202996FE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeAxis" xlink:label="loc_srt_RangeAxis_339E608E43537118B8FA9F8E20296509" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_9B826C686627F56EC0F19F8E20295201" xlink:to="loc_srt_RangeAxis_339E608E43537118B8FA9F8E20296509" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeMember" xlink:label="loc_srt_RangeMember_E7C1A5036D12B73169B49F8E20295728" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RangeAxis_339E608E43537118B8FA9F8E20296509" xlink:to="loc_srt_RangeMember_E7C1A5036D12B73169B49F8E20295728" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MinimumMember" xlink:label="loc_srt_MinimumMember_07B3ABEC6F477E7918179F8E2029DF69" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RangeMember_E7C1A5036D12B73169B49F8E20295728" xlink:to="loc_srt_MinimumMember_07B3ABEC6F477E7918179F8E2029DF69" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MaximumMember" xlink:label="loc_srt_MaximumMember_C9843314EFDAFC6ACA899F8E2029C76E" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RangeMember_E7C1A5036D12B73169B49F8E20295728" xlink:to="loc_srt_MaximumMember_C9843314EFDAFC6ACA899F8E2029C76E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_D1B1BF40DD537172F68D9F8E2029AFE6" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_9B826C686627F56EC0F19F8E20295201" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_D1B1BF40DD537172F68D9F8E2029AFE6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_2392B5F359FA5478E8E49F8E20292B19" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_D1B1BF40DD537172F68D9F8E2029AFE6" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_2392B5F359FA5478E8E49F8E20292B19" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LandAndLandImprovementsMember" xlink:label="loc_us-gaap_LandAndLandImprovementsMember_413101A23586943762A79F8E20298115" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_2392B5F359FA5478E8E49F8E20292B19" xlink:to="loc_us-gaap_LandAndLandImprovementsMember_413101A23586943762A79F8E20298115" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BuildingAndBuildingImprovementsMember" xlink:label="loc_us-gaap_BuildingAndBuildingImprovementsMember_7D3B4C42C5CE368B450F9F8E20294C41" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_2392B5F359FA5478E8E49F8E20292B19" xlink:to="loc_us-gaap_BuildingAndBuildingImprovementsMember_7D3B4C42C5CE368B450F9F8E20294C41" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_MachineryAndEquipmentMember" xlink:label="loc_us-gaap_MachineryAndEquipmentMember_79851E497DC0166547F69F8E202900B2" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_2392B5F359FA5478E8E49F8E20292B19" xlink:to="loc_us-gaap_MachineryAndEquipmentMember_79851E497DC0166547F69F8E202900B2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SoftwareAndSoftwareDevelopmentCostsMember" xlink:label="loc_us-gaap_SoftwareAndSoftwareDevelopmentCostsMember_23D660A2937CDCE50C559F8E2029A578" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_2392B5F359FA5478E8E49F8E20292B19" xlink:to="loc_us-gaap_SoftwareAndSoftwareDevelopmentCostsMember_23D660A2937CDCE50C559F8E2029A578" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LeaseholdImprovementsMember" xlink:label="loc_us-gaap_LeaseholdImprovementsMember_34E7B1549AFAC3DA542F9F8E2029330F" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_2392B5F359FA5478E8E49F8E20292B19" xlink:to="loc_us-gaap_LeaseholdImprovementsMember_34E7B1549AFAC3DA542F9F8E2029330F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentLineItems" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentLineItems_E9DBB275BE1086B18C609F8E20295119" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_9B826C686627F56EC0F19F8E20295201" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentLineItems_E9DBB275BE1086B18C609F8E20295119" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoptionQuantification" xlink:label="loc_us-gaap_NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoptionQuantification_79574517CC14BCEF93A99F8E2029CEBF" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_E9DBB275BE1086B18C609F8E20295119" xlink:to="loc_us-gaap_NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoptionQuantification_79574517CC14BCEF93A99F8E2029CEBF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentGross" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross_9C3EDF3A06E963C5F37A9F8E2039A9B9" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_E9DBB275BE1086B18C609F8E20295119" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentGross_9C3EDF3A06E963C5F37A9F8E2039A9B9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:label="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_D8FECD95F0CB932FF9BA9F8E20395FBE" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_E9DBB275BE1086B18C609F8E20295119" xlink:to="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_D8FECD95F0CB932FF9BA9F8E20395FBE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_BD5087BA236398AFF6489F8E2039900F" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_E9DBB275BE1086B18C609F8E20295119" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_BD5087BA236398AFF6489F8E2039900F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentUsefulLife" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentUsefulLife_6D098308D799FD445BB19F8E20391EC8" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_E9DBB275BE1086B18C609F8E20295119" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentUsefulLife_6D098308D799FD445BB19F8E20391EC8" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/SummaryOfSignificantAccountingPoliciesDetails3" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:label="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_EE7A2B1EA5D31BFABFAF9D5FD4E60783" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTaxAbstract" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTaxAbstract_F95007274A09C513927F9D5FD4E656EF" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_EE7A2B1EA5D31BFABFAF9D5FD4E60783" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTaxAbstract_F95007274A09C513927F9D5FD4E656EF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax_38B9B306B18F82F13B079D5FD4E66E3A" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTaxAbstract_F95007274A09C513927F9D5FD4E656EF" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax_38B9B306B18F82F13B079D5FD4E66E3A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax_09FAC75E757F375898DE9D5FD4E6CB54" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTaxAbstract_F95007274A09C513927F9D5FD4E656EF" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax_09FAC75E757F375898DE9D5FD4E6CB54" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTaxAndAccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax" xlink:label="loc_noc_AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTaxAndAccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax_E00B54179671A39C84329D5FD4E6215A" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTaxAbstract_F95007274A09C513927F9D5FD4E656EF" xlink:to="loc_noc_AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTaxAndAccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax_E00B54179671A39C84329D5FD4E6215A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_43F859C3AC2A605A1A039D5FD4E61749" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTaxAbstract_F95007274A09C513927F9D5FD4E656EF" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_43F859C3AC2A605A1A039D5FD4E61749" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_UnamortizedbenefitplancostsTaxBenefitexpense" xlink:label="loc_noc_UnamortizedbenefitplancostsTaxBenefitexpense_15BCF4CA5B08EB5C899C9D5FD4E68136" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_EE7A2B1EA5D31BFABFAF9D5FD4E60783" xlink:to="loc_noc_UnamortizedbenefitplancostsTaxBenefitexpense_15BCF4CA5B08EB5C899C9D5FD4E68136" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax_0EB92E23F85BA63CAE8F9D5FD4E6C5C6" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_EE7A2B1EA5D31BFABFAF9D5FD4E60783" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax_0EB92E23F85BA63CAE8F9D5FD4E6C5C6" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/SummaryOfSignificantAccountingPoliciesDetails4" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:label="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_90DF227046C4B2B19F93977AA6D0C614" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfChangeInAccountingEstimateTable" xlink:label="loc_us-gaap_ScheduleOfChangeInAccountingEstimateTable_5D71EA9E88126DBBD008977AA6D060A6" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_90DF227046C4B2B19F93977AA6D0C614" xlink:to="loc_us-gaap_ScheduleOfChangeInAccountingEstimateTable_5D71EA9E88126DBBD008977AA6D060A6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_D114DA55B6AEDA6BDBC3977AA6D12D8E" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfChangeInAccountingEstimateTable_5D71EA9E88126DBBD008977AA6D060A6" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_D114DA55B6AEDA6BDBC3977AA6D12D8E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_B0D8A2EAAB1E031309B6977AA6D15DF9" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_D114DA55B6AEDA6BDBC3977AA6D12D8E" xlink:to="loc_us-gaap_SegmentDomain_B0D8A2EAAB1E031309B6977AA6D15DF9" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_AerospaceSystemsMember" xlink:label="loc_noc_AerospaceSystemsMember_1A5B56BD1216F8A7B86F977AA6D1B086" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentDomain_B0D8A2EAAB1E031309B6977AA6D15DF9" xlink:to="loc_noc_AerospaceSystemsMember_1A5B56BD1216F8A7B86F977AA6D1B086" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ChangeInAccountingEstimateByTypeAxis" xlink:label="loc_us-gaap_ChangeInAccountingEstimateByTypeAxis_51FD39E1A92FE8006685977AA6D2C5C3" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfChangeInAccountingEstimateTable_5D71EA9E88126DBBD008977AA6D060A6" xlink:to="loc_us-gaap_ChangeInAccountingEstimateByTypeAxis_51FD39E1A92FE8006685977AA6D2C5C3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ChangeInAccountingEstimateTypeDomain" xlink:label="loc_us-gaap_ChangeInAccountingEstimateTypeDomain_1009E6F35B33A40DE687977AA6D2AFB1" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ChangeInAccountingEstimateByTypeAxis_51FD39E1A92FE8006685977AA6D2C5C3" xlink:to="loc_us-gaap_ChangeInAccountingEstimateTypeDomain_1009E6F35B33A40DE687977AA6D2AFB1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ContractsAccountedForUnderPercentageOfCompletionMember" xlink:label="loc_us-gaap_ContractsAccountedForUnderPercentageOfCompletionMember_231B19D8A4F7D0E17C9F977AA6D2A4FA" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ChangeInAccountingEstimateTypeDomain_1009E6F35B33A40DE687977AA6D2AFB1" xlink:to="loc_us-gaap_ContractsAccountedForUnderPercentageOfCompletionMember_231B19D8A4F7D0E17C9F977AA6D2A4FA" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ChangeInAccountingEstimateLineItems" xlink:label="loc_us-gaap_ChangeInAccountingEstimateLineItems_EA2D4BDDF0BBB9C8D6E8977AA6D28F88" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfChangeInAccountingEstimateTable_5D71EA9E88126DBBD008977AA6D060A6" xlink:to="loc_us-gaap_ChangeInAccountingEstimateLineItems_EA2D4BDDF0BBB9C8D6E8977AA6D28F88" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ContractWithCustomerPerformanceObligationSatisfiedInPreviousPeriod" xlink:label="loc_us-gaap_ContractWithCustomerPerformanceObligationSatisfiedInPreviousPeriod_15CCEB2F956C8109F7E6977AA6D24948" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ChangeInAccountingEstimateLineItems_EA2D4BDDF0BBB9C8D6E8977AA6D28F88" xlink:to="loc_us-gaap_ContractWithCustomerPerformanceObligationSatisfiedInPreviousPeriod_15CCEB2F956C8109F7E6977AA6D24948" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:label="loc_us-gaap_OperatingIncomeLoss_4E7D1A74BFD849AB6DFB977AA6D3F802" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ChangeInAccountingEstimateLineItems_EA2D4BDDF0BBB9C8D6E8977AA6D28F88" xlink:to="loc_us-gaap_OperatingIncomeLoss_4E7D1A74BFD849AB6DFB977AA6D3F802" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_1838495C2781A7EAF615977AA6D31902" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ChangeInAccountingEstimateLineItems_EA2D4BDDF0BBB9C8D6E8977AA6D28F88" xlink:to="loc_us-gaap_NetIncomeLoss_1838495C2781A7EAF615977AA6D31902" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EarningsPerShareDiluted" xlink:label="loc_us-gaap_EarningsPerShareDiluted_28CA64A2F8582163D47C977AA6D381A4" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ChangeInAccountingEstimateLineItems_EA2D4BDDF0BBB9C8D6E8977AA6D28F88" xlink:to="loc_us-gaap_EarningsPerShareDiluted_28CA64A2F8582163D47C977AA6D381A4" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/SummaryOfSignificantAccountingPoliciesPolicies" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:label="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_6BE1B0B9983349618B1BA0FBDFB7375A" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ConsolidationPolicyTextBlock" xlink:label="loc_us-gaap_ConsolidationPolicyTextBlock_94D176795CA6449EDD4EA0FBDFB7A408" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_6BE1B0B9983349618B1BA0FBDFB7375A" xlink:to="loc_us-gaap_ConsolidationPolicyTextBlock_94D176795CA6449EDD4EA0FBDFB7A408" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_UseOfEstimates" xlink:label="loc_us-gaap_UseOfEstimates_FE07CF5316531BB41686A0FBDFB7458B" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_6BE1B0B9983349618B1BA0FBDFB7375A" xlink:to="loc_us-gaap_UseOfEstimates_FE07CF5316531BB41686A0FBDFB7458B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RevenueRecognitionLongTermContracts" xlink:label="loc_us-gaap_RevenueRecognitionLongTermContracts_CEF1D0D9DD9C5E4905FCA0FBDFB7A293" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_6BE1B0B9983349618B1BA0FBDFB7375A" xlink:to="loc_us-gaap_RevenueRecognitionLongTermContracts_CEF1D0D9DD9C5E4905FCA0FBDFB7A293" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SellingGeneralAndAdministrativeExpensesPolicyTextBlock" xlink:label="loc_us-gaap_SellingGeneralAndAdministrativeExpensesPolicyTextBlock_83320726C9FED330E9CBA0FBDFB7CD4C" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_6BE1B0B9983349618B1BA0FBDFB7375A" xlink:to="loc_us-gaap_SellingGeneralAndAdministrativeExpensesPolicyTextBlock_83320726C9FED330E9CBA0FBDFB7CD4C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ResearchAndDevelopmentExpensePolicy" xlink:label="loc_us-gaap_ResearchAndDevelopmentExpensePolicy_A8EDF179BBC55FD1C3C5A0FBDFB7663D" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_6BE1B0B9983349618B1BA0FBDFB7375A" xlink:to="loc_us-gaap_ResearchAndDevelopmentExpensePolicy_A8EDF179BBC55FD1C3C5A0FBDFB7663D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxPolicyTextBlock" xlink:label="loc_us-gaap_IncomeTaxPolicyTextBlock_251ECC6A38C6FE1DFACAA0FBDFB79A42" xlink:type="locator" />
    <link:presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_6BE1B0B9983349618B1BA0FBDFB7375A" xlink:to="loc_us-gaap_IncomeTaxPolicyTextBlock_251ECC6A38C6FE1DFACAA0FBDFB79A42" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CashAndCashEquivalentsPolicyTextBlock" xlink:label="loc_us-gaap_CashAndCashEquivalentsPolicyTextBlock_6C0E37289317F2AC7AFBA0FBDFB70723" xlink:type="locator" />
    <link:presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_6BE1B0B9983349618B1BA0FBDFB7375A" xlink:to="loc_us-gaap_CashAndCashEquivalentsPolicyTextBlock_6C0E37289317F2AC7AFBA0FBDFB70723" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueOfFinancialInstrumentsPolicy" xlink:label="loc_us-gaap_FairValueOfFinancialInstrumentsPolicy_B355549226835C9F3D78A0FBDFB732F6" xlink:type="locator" />
    <link:presentationArc order="8" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_6BE1B0B9983349618B1BA0FBDFB7375A" xlink:to="loc_us-gaap_FairValueOfFinancialInstrumentsPolicy_B355549226835C9F3D78A0FBDFB732F6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_MarketableSecuritiesPolicy" xlink:label="loc_us-gaap_MarketableSecuritiesPolicy_75B1A3996C1A483D408DA0FBDFB7C4EB" xlink:type="locator" />
    <link:presentationArc order="9" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_6BE1B0B9983349618B1BA0FBDFB7375A" xlink:to="loc_us-gaap_MarketableSecuritiesPolicy_75B1A3996C1A483D408DA0FBDFB7C4EB" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DerivativesPolicyTextBlock" xlink:label="loc_us-gaap_DerivativesPolicyTextBlock_0C265B8AF61D037CC381A0FBDFB7641F" xlink:type="locator" />
    <link:presentationArc order="10" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_6BE1B0B9983349618B1BA0FBDFB7375A" xlink:to="loc_us-gaap_DerivativesPolicyTextBlock_0C265B8AF61D037CC381A0FBDFB7641F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InventoryCostsForContractsOrProgramsPolicy" xlink:label="loc_us-gaap_InventoryCostsForContractsOrProgramsPolicy_2251884530D36995C3D1A0FBDFB74ED4" xlink:type="locator" />
    <link:presentationArc order="11" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_6BE1B0B9983349618B1BA0FBDFB7375A" xlink:to="loc_us-gaap_InventoryCostsForContractsOrProgramsPolicy_2251884530D36995C3D1A0FBDFB74ED4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InvestmentPolicyTextBlock" xlink:label="loc_us-gaap_InvestmentPolicyTextBlock_A149C0F6CF5F823A5BB1A0FBDFB77D65" xlink:type="locator" />
    <link:presentationArc order="12" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_6BE1B0B9983349618B1BA0FBDFB7375A" xlink:to="loc_us-gaap_InvestmentPolicyTextBlock_A149C0F6CF5F823A5BB1A0FBDFB77D65" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentPolicyTextBlock" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentPolicyTextBlock_3397FA1B66B116F730DEA0FBDFB7B788" xlink:type="locator" />
    <link:presentationArc order="13" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_6BE1B0B9983349618B1BA0FBDFB7375A" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentPolicyTextBlock_3397FA1B66B116F730DEA0FBDFB7B788" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GoodwillAndIntangibleAssetsPolicyTextBlock" xlink:label="loc_us-gaap_GoodwillAndIntangibleAssetsPolicyTextBlock_A7113D6719E3C7EE8E00A0FBDFB7D4C6" xlink:type="locator" />
    <link:presentationArc order="14" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_6BE1B0B9983349618B1BA0FBDFB7375A" xlink:to="loc_us-gaap_GoodwillAndIntangibleAssetsPolicyTextBlock_A7113D6719E3C7EE8E00A0FBDFB7D4C6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LesseeLeasesPolicyTextBlock" xlink:label="loc_us-gaap_LesseeLeasesPolicyTextBlock_B0DAC0C0089A69E246D2A0FBDFB71200" xlink:type="locator" />
    <link:presentationArc order="15" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_6BE1B0B9983349618B1BA0FBDFB7375A" xlink:to="loc_us-gaap_LesseeLeasesPolicyTextBlock_B0DAC0C0089A69E246D2A0FBDFB71200" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommitmentsAndContingenciesPolicyTextBlock" xlink:label="loc_us-gaap_CommitmentsAndContingenciesPolicyTextBlock_6D809B8EB8C520681AE4A0FBDFB71CC7" xlink:type="locator" />
    <link:presentationArc order="16" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_6BE1B0B9983349618B1BA0FBDFB7375A" xlink:to="loc_us-gaap_CommitmentsAndContingenciesPolicyTextBlock_6D809B8EB8C520681AE4A0FBDFB71CC7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EnvironmentalCostsPolicy" xlink:label="loc_us-gaap_EnvironmentalCostsPolicy_EFADB25F2F09059ABDEDA0FBDFB72D38" xlink:type="locator" />
    <link:presentationArc order="17" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_6BE1B0B9983349618B1BA0FBDFB7375A" xlink:to="loc_us-gaap_EnvironmentalCostsPolicy_EFADB25F2F09059ABDEDA0FBDFB72D38" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PensionAndOtherPostretirementPlansPolicy" xlink:label="loc_us-gaap_PensionAndOtherPostretirementPlansPolicy_F4350D17F1419C3CB1F2A0FBDFB75C1F" xlink:type="locator" />
    <link:presentationArc order="18" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_6BE1B0B9983349618B1BA0FBDFB7375A" xlink:to="loc_us-gaap_PensionAndOtherPostretirementPlansPolicy_F4350D17F1419C3CB1F2A0FBDFB75C1F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy" xlink:label="loc_us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy_FC1192D6410CCC157805A0FBDFB78B62" xlink:type="locator" />
    <link:presentationArc order="19" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_6BE1B0B9983349618B1BA0FBDFB7375A" xlink:to="loc_us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy_FC1192D6410CCC157805A0FBDFB78B62" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ComprehensiveIncomePolicyPolicyTextBlock" xlink:label="loc_us-gaap_ComprehensiveIncomePolicyPolicyTextBlock_7B32547D4D6127853D81A0FBDFB7D8CE" xlink:type="locator" />
    <link:presentationArc order="20" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_6BE1B0B9983349618B1BA0FBDFB7375A" xlink:to="loc_us-gaap_ComprehensiveIncomePolicyPolicyTextBlock_7B32547D4D6127853D81A0FBDFB7D8CE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DescriptionOfNewAccountingPronouncementsNotYetAdopted" xlink:label="loc_us-gaap_DescriptionOfNewAccountingPronouncementsNotYetAdopted_C2F06333DBCDF78FB014A0FBDFB7D210" xlink:type="locator" />
    <link:presentationArc order="21" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_6BE1B0B9983349618B1BA0FBDFB7375A" xlink:to="loc_us-gaap_DescriptionOfNewAccountingPronouncementsNotYetAdopted_C2F06333DBCDF78FB014A0FBDFB7D210" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EarningsPerSharePolicyTextBlock" xlink:label="loc_us-gaap_EarningsPerSharePolicyTextBlock_BD04D1AE6D123A4328FDA0FBDFB7DF45" xlink:type="locator" />
    <link:presentationArc order="22" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_6BE1B0B9983349618B1BA0FBDFB7375A" xlink:to="loc_us-gaap_EarningsPerSharePolicyTextBlock_BD04D1AE6D123A4328FDA0FBDFB7DF45" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BasisOfAccountingPolicyPolicyTextBlock" xlink:label="loc_us-gaap_BasisOfAccountingPolicyPolicyTextBlock_5996C725BDA61A2871FBA0FBDFB71C69" xlink:type="locator" />
    <link:presentationArc order="23" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_6BE1B0B9983349618B1BA0FBDFB7375A" xlink:to="loc_us-gaap_BasisOfAccountingPolicyPolicyTextBlock_5996C725BDA61A2871FBA0FBDFB71C69" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TradeAndOtherAccountsReceivableUnbilledReceivablesPolicy" xlink:label="loc_us-gaap_TradeAndOtherAccountsReceivableUnbilledReceivablesPolicy_CD6376DF187250A3FA3BA0FC2148564A" xlink:type="locator" />
    <link:presentationArc order="24" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_6BE1B0B9983349618B1BA0FBDFB7375A" xlink:to="loc_us-gaap_TradeAndOtherAccountsReceivableUnbilledReceivablesPolicy_CD6376DF187250A3FA3BA0FC2148564A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock" xlink:label="loc_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_622481E25983881224D2A0FBDFB7A9C3" xlink:type="locator" />
    <link:presentationArc order="25" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_6BE1B0B9983349618B1BA0FBDFB7375A" xlink:to="loc_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_622481E25983881224D2A0FBDFB7A9C3" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/SummaryOfSignificantAccountingPoliciesSummaryOfSignificantAccountingPoliciesDetails5" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:label="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_7A4B334273DF7E19A56A9D6A61105FD9" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RevenueRemainingPerformanceObligation" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligation_19269133C8BA20CE7B6C9D6A61103C1C" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_7A4B334273DF7E19A56A9D6A61105FD9" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligation_19269133C8BA20CE7B6C9D6A61103C1C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionExplanation" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionExplanation_D1654905018B98A46E459D6A6110F62C" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_7A4B334273DF7E19A56A9D6A61105FD9" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionExplanation_D1654905018B98A46E459D6A6110F62C" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_InnovationSystemsNetcontractassetsliabilities" xlink:label="loc_noc_InnovationSystemsNetcontractassetsliabilities_6CE30257251B33542A029D6A61104921" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_7A4B334273DF7E19A56A9D6A61105FD9" xlink:to="loc_noc_InnovationSystemsNetcontractassetsliabilities_6CE30257251B33542A029D6A61104921" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_UnbilledReceivablesCurrent" xlink:label="loc_us-gaap_UnbilledReceivablesCurrent_C6A2ED74B8CDE935FAD09D6A6110C250" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_7A4B334273DF7E19A56A9D6A61105FD9" xlink:to="loc_us-gaap_UnbilledReceivablesCurrent_C6A2ED74B8CDE935FAD09D6A6110C250" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_AmountofincreasedecreaseinUnbilledReceivables" xlink:label="loc_noc_AmountofincreasedecreaseinUnbilledReceivables_EBBADF3A33B53E8D6B659D6A6110CCF7" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_7A4B334273DF7E19A56A9D6A61105FD9" xlink:to="loc_noc_AmountofincreasedecreaseinUnbilledReceivables_EBBADF3A33B53E8D6B659D6A6110CCF7" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_PercentincreasedecreaseinUnbilledReceivables" xlink:label="loc_noc_PercentincreasedecreaseinUnbilledReceivables_9AC1F26D94E6C3F33A5A9D6A611A9257" xlink:type="locator" />
    <link:presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_7A4B334273DF7E19A56A9D6A61105FD9" xlink:to="loc_noc_PercentincreasedecreaseinUnbilledReceivables_9AC1F26D94E6C3F33A5A9D6A611A9257" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ContractWithCustomerLiabilityCurrent" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityCurrent_1ACBC24717C2F54044839D6A611A82D3" xlink:type="locator" />
    <link:presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_7A4B334273DF7E19A56A9D6A61105FD9" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityCurrent_1ACBC24717C2F54044839D6A611A82D3" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_AmountofdecreaseincreaseinContractwithCustomerLiabilityCurrent" xlink:label="loc_noc_AmountofdecreaseincreaseinContractwithCustomerLiabilityCurrent_A3CB17B9B554CAB25F479D6A611AFABD" xlink:type="locator" />
    <link:presentationArc order="8" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_7A4B334273DF7E19A56A9D6A61105FD9" xlink:to="loc_noc_AmountofdecreaseincreaseinContractwithCustomerLiabilityCurrent_A3CB17B9B554CAB25F479D6A611AFABD" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_PercentdecreaseincreaseinContractwithCustomerLiabilityCurrent" xlink:label="loc_noc_PercentdecreaseincreaseinContractwithCustomerLiabilityCurrent_37BF7DC5E70EA5F08F939D6A611AC354" xlink:type="locator" />
    <link:presentationArc order="9" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_7A4B334273DF7E19A56A9D6A61105FD9" xlink:to="loc_noc_PercentdecreaseincreaseinContractwithCustomerLiabilityCurrent_37BF7DC5E70EA5F08F939D6A611AC354" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ContractWithCustomerAssetNetCurrent" xlink:label="loc_us-gaap_ContractWithCustomerAssetNetCurrent_E0DC106A7C6AFC03415F9D6A611A2BC3" xlink:type="locator" />
    <link:presentationArc order="10" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_7A4B334273DF7E19A56A9D6A61105FD9" xlink:to="loc_us-gaap_ContractWithCustomerAssetNetCurrent_E0DC106A7C6AFC03415F9D6A611A2BC3" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_Amountofincreasedecreaseinnetcontractassetsliabilities" xlink:label="loc_noc_Amountofincreasedecreaseinnetcontractassetsliabilities_4B3786516E81B785677E9D6A611A44B4" xlink:type="locator" />
    <link:presentationArc order="11" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_7A4B334273DF7E19A56A9D6A61105FD9" xlink:to="loc_noc_Amountofincreasedecreaseinnetcontractassetsliabilities_4B3786516E81B785677E9D6A611A44B4" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_Percentincreasedecreaseinnetcontractassetsliabilities" xlink:label="loc_noc_Percentincreasedecreaseinnetcontractassetsliabilities_E5CC82978DCA75062B739D6A611A47AF" xlink:type="locator" />
    <link:presentationArc order="12" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_7A4B334273DF7E19A56A9D6A61105FD9" xlink:to="loc_noc_Percentincreasedecreaseinnetcontractassetsliabilities_E5CC82978DCA75062B739D6A611A47AF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ContractWithCustomerLiabilityRevenueRecognized" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_3B8AF8A0FCE47883D4D69D6A611A8FD4" xlink:type="locator" />
    <link:presentationArc order="13" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_7A4B334273DF7E19A56A9D6A61105FD9" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_3B8AF8A0FCE47883D4D69D6A611A8FD4" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/SummaryOfSignificantAccountingPoliciesSummaryOfSignificantAccountingPoliciesDetails6" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:label="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_AEE66146013DF0CDBD9D9D25DF5A39EE" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountingChangesAndErrorCorrectionsAbstract" xlink:label="loc_us-gaap_AccountingChangesAndErrorCorrectionsAbstract_8405861BBADFF7894E9A9D25DF5AEC37" xlink:type="locator" />
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_AEE66146013DF0CDBD9D9D25DF5A39EE" xlink:to="loc_us-gaap_AccountingChangesAndErrorCorrectionsAbstract_8405861BBADFF7894E9A9D25DF5AEC37" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_20D609E0B12801E3BE2C9D25DF5A2404" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingChangesAndErrorCorrectionsAbstract_8405861BBADFF7894E9A9D25DF5AEC37" xlink:to="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_20D609E0B12801E3BE2C9D25DF5A2404" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RestatementAxis" xlink:label="loc_srt_RestatementAxis_1367BD937C1585558C509D25DF5A005F" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_20D609E0B12801E3BE2C9D25DF5A2404" xlink:to="loc_srt_RestatementAxis_1367BD937C1585558C509D25DF5A005F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RestatementDomain" xlink:label="loc_srt_RestatementDomain_2AE4AE9D47940A50492B9D25DF5AD424" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RestatementAxis_1367BD937C1585558C509D25DF5A005F" xlink:to="loc_srt_RestatementDomain_2AE4AE9D47940A50492B9D25DF5AD424" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementMember" xlink:label="loc_us-gaap_NewAccountingPronouncementMember_63AA7A2BA5DB8DBE68F99D25DF5A6FEC" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RestatementDomain_2AE4AE9D47940A50492B9D25DF5AD424" xlink:to="loc_us-gaap_NewAccountingPronouncementMember_63AA7A2BA5DB8DBE68F99D25DF5A6FEC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:label="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_A256D966AC658AA44C9C9D25DF5A39B0" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_20D609E0B12801E3BE2C9D25DF5A2404" xlink:to="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_A256D966AC658AA44C9C9D25DF5A39B0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TypeOfAdoptionMember" xlink:label="loc_us-gaap_TypeOfAdoptionMember_0E59E456D7B2B26D62459D25DF5A5984" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_A256D966AC658AA44C9C9D25DF5A39B0" xlink:to="loc_us-gaap_TypeOfAdoptionMember_0E59E456D7B2B26D62459D25DF5A5984" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountingStandardsUpdate201601Member" xlink:label="loc_us-gaap_AccountingStandardsUpdate201601Member_92C64F049419A72FFE459D25DF5A9626" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_TypeOfAdoptionMember_0E59E456D7B2B26D62459D25DF5A5984" xlink:to="loc_us-gaap_AccountingStandardsUpdate201601Member_92C64F049419A72FFE459D25DF5A9626" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountingStandardsUpdate201409Member" xlink:label="loc_us-gaap_AccountingStandardsUpdate201409Member_B0D56AFD7E2683D317139D25DF5A1076" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_TypeOfAdoptionMember_0E59E456D7B2B26D62459D25DF5A5984" xlink:to="loc_us-gaap_AccountingStandardsUpdate201409Member_B0D56AFD7E2683D317139D25DF5A1076" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis" xlink:label="loc_us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_1F6E878277C9F132640B9D25DF5A6ACF" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_20D609E0B12801E3BE2C9D25DF5A2404" xlink:to="loc_us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_1F6E878277C9F132640B9D25DF5A6ACF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ChangeInAccountingPrincipleMember" xlink:label="loc_us-gaap_ChangeInAccountingPrincipleMember_C68050D07DCD65F1CD4F9D25DF5AC383" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_1F6E878277C9F132640B9D25DF5A6ACF" xlink:to="loc_us-gaap_ChangeInAccountingPrincipleMember_C68050D07DCD65F1CD4F9D25DF5AC383" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_38FE45FDF4DA39C890CB9D25DF5AF370" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_20D609E0B12801E3BE2C9D25DF5A2404" xlink:to="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_38FE45FDF4DA39C890CB9D25DF5AF370" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption" xlink:label="loc_us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption_0AD62319B8D1394024A69D25DF5A101F" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_38FE45FDF4DA39C890CB9D25DF5AF370" xlink:to="loc_us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption_0AD62319B8D1394024A69D25DF5A101F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:label="loc_us-gaap_OperatingIncomeLoss_4D44B1D681D4854374209D25DF5A6BDC" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_38FE45FDF4DA39C890CB9D25DF5AF370" xlink:to="loc_us-gaap_OperatingIncomeLoss_4D44B1D681D4854374209D25DF5A6BDC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_FD2A974B81D40AE8D8C69D25DF64C864" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_38FE45FDF4DA39C890CB9D25DF5AF370" xlink:to="loc_us-gaap_NetIncomeLoss_FD2A974B81D40AE8D8C69D25DF64C864" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EarningsPerShareBasic" xlink:label="loc_us-gaap_EarningsPerShareBasic_C58BDBDF9E198BBD5DBB9D25DF64A665" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_38FE45FDF4DA39C890CB9D25DF5AF370" xlink:to="loc_us-gaap_EarningsPerShareBasic_C58BDBDF9E198BBD5DBB9D25DF64A665" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EarningsPerShareDiluted" xlink:label="loc_us-gaap_EarningsPerShareDiluted_B730BB407F4B54B8970E9D25DF64976B" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_38FE45FDF4DA39C890CB9D25DF5AF370" xlink:to="loc_us-gaap_EarningsPerShareDiluted_B730BB407F4B54B8970E9D25DF64976B" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/SummaryOfSignificantAccountingPoliciesTables" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:label="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_A0A571C9F7C3AB2D487BA0DEA80A8B0E" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfChangeInAccountingEstimateTextBlock" xlink:label="loc_us-gaap_ScheduleOfChangeInAccountingEstimateTextBlock_5626A913C5BB3BCCD07CA0DEA80A6D58" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_A0A571C9F7C3AB2D487BA0DEA80A8B0E" xlink:to="loc_us-gaap_ScheduleOfChangeInAccountingEstimateTextBlock_5626A913C5BB3BCCD07CA0DEA80A6D58" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ContractWithCustomerAssetAndLiabilityTableTextBlock" xlink:label="loc_us-gaap_ContractWithCustomerAssetAndLiabilityTableTextBlock_404A157C534873478A9AA0DEBDAB5795" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_A0A571C9F7C3AB2D487BA0DEA80A8B0E" xlink:to="loc_us-gaap_ContractWithCustomerAssetAndLiabilityTableTextBlock_404A157C534873478A9AA0DEBDAB5795" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTextBlock" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTextBlock_E9CD4C716DC38542E9C2A0DEA80BD7E6" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_A0A571C9F7C3AB2D487BA0DEA80A8B0E" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTextBlock_E9CD4C716DC38542E9C2A0DEA80BD7E6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock_1B666CFC6558F1F326FCA0DEA80BDBA2" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_A0A571C9F7C3AB2D487BA0DEA80A8B0E" xlink:to="loc_us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock_1B666CFC6558F1F326FCA0DEA80BDBA2" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/UnauditedSelectedQuarterlyData" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_QuarterlyFinancialInformationDisclosureAbstract" xlink:label="loc_us-gaap_QuarterlyFinancialInformationDisclosureAbstract_23316A77600C091124399ADBE08FB66C" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_QuarterlyFinancialInformationTextBlock" xlink:label="loc_us-gaap_QuarterlyFinancialInformationTextBlock_812DA037BEF2AF75439D9ADBE0CD0C54" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_QuarterlyFinancialInformationDisclosureAbstract_23316A77600C091124399ADBE08FB66C" xlink:to="loc_us-gaap_QuarterlyFinancialInformationTextBlock_812DA037BEF2AF75439D9ADBE0CD0C54" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/UnauditedSelectedQuarterlyDataDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_QuarterlyFinancialInformationDisclosureAbstract" xlink:label="loc_us-gaap_QuarterlyFinancialInformationDisclosureAbstract_78C3DE8237A90FD9BC7EA12DD12BC2BE" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_B762771726CFBDD5C292A12DD12C0EE5" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_QuarterlyFinancialInformationDisclosureAbstract_78C3DE8237A90FD9BC7EA12DD12BC2BE" xlink:to="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_B762771726CFBDD5C292A12DD12C0EE5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RestatementAxis" xlink:label="loc_srt_RestatementAxis_85E20A60D8F42FC943FCA12DD12C20E8" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_B762771726CFBDD5C292A12DD12C0EE5" xlink:to="loc_srt_RestatementAxis_85E20A60D8F42FC943FCA12DD12C20E8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RestatementDomain" xlink:label="loc_srt_RestatementDomain_37D674E53E93C7FB263EA12DD12D5BE2" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RestatementAxis_85E20A60D8F42FC943FCA12DD12C20E8" xlink:to="loc_srt_RestatementDomain_37D674E53E93C7FB263EA12DD12D5BE2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ChangeInAccountingPrincipleMember" xlink:label="loc_us-gaap_ChangeInAccountingPrincipleMember_2058E1C002C5B568DEB4A12DD12D038E" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RestatementDomain_37D674E53E93C7FB263EA12DD12D5BE2" xlink:to="loc_us-gaap_ChangeInAccountingPrincipleMember_2058E1C002C5B568DEB4A12DD12D038E" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_AdjustmentsforchangetoDefinedBenefitPlanActuarialGainLossImmediateRecognitionasComponentinNetPeriodBenefitCostMember" xlink:label="loc_noc_AdjustmentsforchangetoDefinedBenefitPlanActuarialGainLossImmediateRecognitionasComponentinNetPeriodBenefitCostMember_08B891846A1FF610BC10A12DD12E7DC3" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ChangeInAccountingPrincipleMember_2058E1C002C5B568DEB4A12DD12D038E" xlink:to="loc_noc_AdjustmentsforchangetoDefinedBenefitPlanActuarialGainLossImmediateRecognitionasComponentinNetPeriodBenefitCostMember_08B891846A1FF610BC10A12DD12E7DC3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis" xlink:label="loc_us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_88EE1CDCEB925F8DD4CCA12DD12DC8E5" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_B762771726CFBDD5C292A12DD12C0EE5" xlink:to="loc_us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_88EE1CDCEB925F8DD4CCA12DD12DC8E5" xlink:type="arc" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_88EE1CDCEB925F8DD4CCA12DD12DC8E5" xlink:to="loc_us-gaap_ChangeInAccountingPrincipleMember_2058E1C002C5B568DEB4A12DD12D038E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_F30C5E42C01ED410DE5BA12DD12E1E78" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_B762771726CFBDD5C292A12DD12C0EE5" xlink:to="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_F30C5E42C01ED410DE5BA12DD12E1E78" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_QuarterlyFinancialDataAbstract" xlink:label="loc_us-gaap_QuarterlyFinancialDataAbstract_D14117ECE36EB697D9F3A12DD12E842B" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_QuarterlyFinancialInformationDisclosureAbstract_78C3DE8237A90FD9BC7EA12DD12BC2BE" xlink:to="loc_us-gaap_QuarterlyFinancialDataAbstract_D14117ECE36EB697D9F3A12DD12E842B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Revenues" xlink:label="loc_us-gaap_Revenues_282DAB70C2E291F92B74A12DD12E0351" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_QuarterlyFinancialDataAbstract_D14117ECE36EB697D9F3A12DD12E842B" xlink:to="loc_us-gaap_Revenues_282DAB70C2E291F92B74A12DD12E0351" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:label="loc_us-gaap_OperatingIncomeLoss_85A9678B8754C579FBF7A12DD12E1EED" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_QuarterlyFinancialDataAbstract_D14117ECE36EB697D9F3A12DD12E842B" xlink:to="loc_us-gaap_OperatingIncomeLoss_85A9678B8754C579FBF7A12DD12E1EED" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_0C47DE8110D324406807A12DD12FB982" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_QuarterlyFinancialDataAbstract_D14117ECE36EB697D9F3A12DD12E842B" xlink:to="loc_us-gaap_NetIncomeLoss_0C47DE8110D324406807A12DD12FB982" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EarningsPerShareBasic" xlink:label="loc_us-gaap_EarningsPerShareBasic_6C36A767A1AB8168B706A12DD12FF504" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_QuarterlyFinancialDataAbstract_D14117ECE36EB697D9F3A12DD12E842B" xlink:to="loc_us-gaap_EarningsPerShareBasic_6C36A767A1AB8168B706A12DD12FF504" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EarningsPerShareDiluted" xlink:label="loc_us-gaap_EarningsPerShareDiluted_05B4311F416217904660A12DD12FD6A3" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_QuarterlyFinancialDataAbstract_D14117ECE36EB697D9F3A12DD12E842B" xlink:to="loc_us-gaap_EarningsPerShareDiluted_05B4311F416217904660A12DD12FD6A3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_BA2D466FE206059922DCA12DD12FF973" xlink:type="locator" />
    <link:presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_QuarterlyFinancialDataAbstract_D14117ECE36EB697D9F3A12DD12E842B" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_BA2D466FE206059922DCA12DD12FF973" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_80D779058837361D9E3CA12DD12F098D" xlink:type="locator" />
    <link:presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_QuarterlyFinancialDataAbstract_D14117ECE36EB697D9F3A12DD12E842B" xlink:to="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_80D779058837361D9E3CA12DD12F098D" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/UnauditedSelectedQuarterlyDataTables" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_QuarterlyFinancialInformationDisclosureAbstract" xlink:label="loc_us-gaap_QuarterlyFinancialInformationDisclosureAbstract_E51E2BA8D369AA71CB969B82EA05850F" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_D84C92F614BE9F7235A09B82EA05D8A0" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_QuarterlyFinancialInformationDisclosureAbstract_E51E2BA8D369AA71CB969B82EA05850F" xlink:to="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_D84C92F614BE9F7235A09B82EA05D8A0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis" xlink:label="loc_us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_E9D704F416EB0F9A69079B82EA055077" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_D84C92F614BE9F7235A09B82EA05D8A0" xlink:to="loc_us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_E9D704F416EB0F9A69079B82EA055077" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ChangeInAccountingPrincipleMember" xlink:label="loc_us-gaap_ChangeInAccountingPrincipleMember_3D6ECD7EDFDA34074FAB9B82EA05FA70" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_E9D704F416EB0F9A69079B82EA055077" xlink:to="loc_us-gaap_ChangeInAccountingPrincipleMember_3D6ECD7EDFDA34074FAB9B82EA05FA70" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_AdjustmentsforchangetoDefinedBenefitPlanActuarialGainLossImmediateRecognitionasComponentinNetPeriodBenefitCostMember" xlink:label="loc_noc_AdjustmentsforchangetoDefinedBenefitPlanActuarialGainLossImmediateRecognitionasComponentinNetPeriodBenefitCostMember_EA5F4E1B1327C6FA527C9B82EA05F17E" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ChangeInAccountingPrincipleMember_3D6ECD7EDFDA34074FAB9B82EA05FA70" xlink:to="loc_noc_AdjustmentsforchangetoDefinedBenefitPlanActuarialGainLossImmediateRecognitionasComponentinNetPeriodBenefitCostMember_EA5F4E1B1327C6FA527C9B82EA05F17E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RestatementAxis" xlink:label="loc_srt_RestatementAxis_0AEE7CF7BEABA71115019B82EA0534D0" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_D84C92F614BE9F7235A09B82EA05D8A0" xlink:to="loc_srt_RestatementAxis_0AEE7CF7BEABA71115019B82EA0534D0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RestatementDomain" xlink:label="loc_srt_RestatementDomain_8682B434B6627DA2AA989B82EA05F3F7" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RestatementAxis_0AEE7CF7BEABA71115019B82EA0534D0" xlink:to="loc_srt_RestatementDomain_8682B434B6627DA2AA989B82EA05F3F7" xlink:type="arc" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RestatementDomain_8682B434B6627DA2AA989B82EA05F3F7" xlink:to="loc_us-gaap_ChangeInAccountingPrincipleMember_3D6ECD7EDFDA34074FAB9B82EA05FA70" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_F80B48DA93422A6267139B82EA05D261" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_D84C92F614BE9F7235A09B82EA05D8A0" xlink:to="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_F80B48DA93422A6267139B82EA05D261" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_QuarterlyFinancialInformationTextBlock" xlink:label="loc_us-gaap_QuarterlyFinancialInformationTextBlock_EE5A3F629044216499899B82EA053D99" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_F80B48DA93422A6267139B82EA05D261" xlink:to="loc_us-gaap_QuarterlyFinancialInformationTextBlock_EE5A3F629044216499899B82EA053D99" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock_ED90063F4242FE3A2AF29B82EA05F5D6" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_F80B48DA93422A6267139B82EA05D261" xlink:to="loc_us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock_ED90063F4242FE3A2AF29B82EA05F5D6" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/UnbilledReceivablesNet" xlink:type="extended">
    <link:loc xlink:href="noc-20181231.xsd#noc_UnbilledReceivablesNetAbstract" xlink:label="loc_noc_UnbilledReceivablesNetAbstract_768BB88BCEA1818C12CE977AA6541784" xlink:type="locator" />
    <link:loc xlink:href="noc-20181231.xsd#noc_UnbilledReceivablesDisclosureTextBlock" xlink:label="loc_noc_UnbilledReceivablesDisclosureTextBlock_B7DD4B5BCEB31773176D977AA65444E9" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_noc_UnbilledReceivablesNetAbstract_768BB88BCEA1818C12CE977AA6541784" xlink:to="loc_noc_UnbilledReceivablesDisclosureTextBlock_B7DD4B5BCEB31773176D977AA65444E9" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/UnbilledReceivablesNetDetails" xlink:type="extended">
    <link:loc xlink:href="noc-20181231.xsd#noc_UnbilledReceivablesNetAbstract" xlink:label="loc_noc_UnbilledReceivablesNetAbstract_648421C19782847B0579977AA64CFDE1" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable" xlink:label="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_87870A38CA91B831B5E9977AA64CDD2C" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_noc_UnbilledReceivablesNetAbstract_648421C19782847B0579977AA64CFDE1" xlink:to="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_87870A38CA91B831B5E9977AA64CDD2C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountsNotesLoansAndFinancingReceivablesByLegalEntityOfCounterpartyTypeAxis" xlink:label="loc_us-gaap_AccountsNotesLoansAndFinancingReceivablesByLegalEntityOfCounterpartyTypeAxis_7043D713396349E35A95977AA64CE9B3" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_87870A38CA91B831B5E9977AA64CDD2C" xlink:to="loc_us-gaap_AccountsNotesLoansAndFinancingReceivablesByLegalEntityOfCounterpartyTypeAxis_7043D713396349E35A95977AA64CE9B3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LegalEntityTypeOfCounterpartyDomain" xlink:label="loc_us-gaap_LegalEntityTypeOfCounterpartyDomain_A22DE43520FA0AE5D822977AA64CDE70" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountsNotesLoansAndFinancingReceivablesByLegalEntityOfCounterpartyTypeAxis_7043D713396349E35A95977AA64CE9B3" xlink:to="loc_us-gaap_LegalEntityTypeOfCounterpartyDomain_A22DE43520FA0AE5D822977AA64CDE70" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_USGovernmentMember" xlink:label="loc_noc_USGovernmentMember_B48953410EDA14A1B73A977AA64D204F" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LegalEntityTypeOfCounterpartyDomain_A22DE43520FA0AE5D822977AA64CDE70" xlink:to="loc_noc_USGovernmentMember_B48953410EDA14A1B73A977AA64D204F" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_InternationalandOtherCustomersMember" xlink:label="loc_noc_InternationalandOtherCustomersMember_BF4B40CED814DCAD6C0C977AA64D2E63" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LegalEntityTypeOfCounterpartyDomain_A22DE43520FA0AE5D822977AA64CDE70" xlink:to="loc_noc_InternationalandOtherCustomersMember_BF4B40CED814DCAD6C0C977AA64D2E63" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:label="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_C70B41FB7BE3491E4B9C977AA64D4F96" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_87870A38CA91B831B5E9977AA64CDD2C" xlink:to="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_C70B41FB7BE3491E4B9C977AA64D4F96" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_UnbilledContractsReceivable" xlink:label="loc_us-gaap_UnbilledContractsReceivable_AB5D592C11EB7752DCDC977AA64D838D" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_C70B41FB7BE3491E4B9C977AA64D4F96" xlink:to="loc_us-gaap_UnbilledContractsReceivable_AB5D592C11EB7752DCDC977AA64D838D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CustomerAdvancesAndProgressPaymentsForLongTermContractsOrPrograms" xlink:label="loc_us-gaap_CustomerAdvancesAndProgressPaymentsForLongTermContractsOrPrograms_91A1523E643CE4BF0063977AA64EBD7B" xlink:type="locator" />
    <link:presentationArc order="2" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_C70B41FB7BE3491E4B9C977AA64D4F96" xlink:to="loc_us-gaap_CustomerAdvancesAndProgressPaymentsForLongTermContractsOrPrograms_91A1523E643CE4BF0063977AA64EBD7B" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_UnbilledContractReceivablenetofprogressandperformancebasedpayments" xlink:label="loc_noc_UnbilledContractReceivablenetofprogressandperformancebasedpayments_3206E8855B22E54A39AA977AA64E49D1" xlink:type="locator" />
    <link:presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_C70B41FB7BE3491E4B9C977AA64D4F96" xlink:to="loc_noc_UnbilledContractReceivablenetofprogressandperformancebasedpayments_3206E8855B22E54A39AA977AA64E49D1" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_AllowanceforDoubtfulUnbilledReceivables" xlink:label="loc_noc_AllowanceforDoubtfulUnbilledReceivables_7B77DC452FF1B77B8D88977AA64EC78A" xlink:type="locator" />
    <link:presentationArc order="4" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_C70B41FB7BE3491E4B9C977AA64D4F96" xlink:to="loc_noc_AllowanceforDoubtfulUnbilledReceivables_7B77DC452FF1B77B8D88977AA64EC78A" xlink:type="arc" />
    <link:loc xlink:href="noc-20181231.xsd#noc_UnbilledContractReceivableNet" xlink:label="loc_noc_UnbilledContractReceivableNet_8FCDFD4173C5508A9019977AA64E3C37" xlink:type="locator" />
    <link:presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_C70B41FB7BE3491E4B9C977AA64D4F96" xlink:to="loc_noc_UnbilledContractReceivableNet_8FCDFD4173C5508A9019977AA64E3C37" xlink:type="arc" />
  </link:presentationLink>
  <link:presentationLink xlink:role="http://www.northropgrumman.com/role/UnbilledReceivablesNetTables" xlink:type="extended">
    <link:loc xlink:href="noc-20181231.xsd#noc_UnbilledReceivablesNetAbstract" xlink:label="loc_noc_UnbilledReceivablesNetAbstract_6EF929DE935CA2C7F93C977AA651F2C3" xlink:type="locator" />
    <link:loc xlink:href="noc-20181231.xsd#noc_ScheduleofUnbilledReceivablesTableTextBlock" xlink:label="loc_noc_ScheduleofUnbilledReceivablesTableTextBlock_192953E3D8AE1108610D977AA651A107" xlink:type="locator" />
    <link:presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_noc_UnbilledReceivablesNetAbstract_6EF929DE935CA2C7F93C977AA651F2C3" xlink:to="loc_noc_ScheduleofUnbilledReceivablesTableTextBlock_192953E3D8AE1108610D977AA651A107" xlink:type="arc" />
  </link:presentationLink>
</link:linkbase>
