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  <xs:element id="lmt_OtherComprehensiveIncomeLossDefinedBenefitPlanGainLossArisingDuringPeriodAndPriorServiceCostCreditAfterTax" abstract="false" name="OtherComprehensiveIncomeLossDefinedBenefitPlanGainLossArisingDuringPeriodAndPriorServiceCostCreditAfterTax" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="lmt_ShareBasedCompensationArrangementByShareBasedPaymentAwardCompensationPlansDomain" abstract="true" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardCompensationPlansDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="lmt_DefinedBenefitPlanPensionPlanBenefitObligationPlanAssetsOutstanding" abstract="false" name="DefinedBenefitPlanPensionPlanBenefitObligationPlanAssetsOutstanding" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="lmt_SharesOfOurStockHeldInDefinedContributionPlansWeSponsor" abstract="false" name="SharesOfOurStockHeldInDefinedContributionPlansWeSponsor" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="lmt_SeveranceCostsAfterTax" abstract="false" name="SeveranceCostsAfterTax" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="lmt_SpaceMember" abstract="true" name="SpaceMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="lmt_AcceleratedShareRepurchaseAgreementMember" abstract="true" name="AcceleratedShareRepurchaseAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="lmt_ThreePointNineZeroPercentNotesDueTwentyThirtyTwoMember" abstract="true" name="ThreePointNineZeroPercentNotesDueTwentyThirtyTwoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="lmt_FivePointNineZeroPercentNotesDueTwentySixtyThreeMember" abstract="true" name="FivePointNineZeroPercentNotesDueTwentySixtyThreeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="lmt_OtherGovernmentsAndCommercialMember" abstract="true" name="OtherGovernmentsAndCommercialMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="lmt_EquitySecuritiesFVNIRealizedGainLossNetOfTaxAmountPerShare" abstract="false" name="EquitySecuritiesFVNIRealizedGainLossNetOfTaxAmountPerShare" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:perShareItemType"/>
  <xs:element id="lmt_ShareholdersEquityTable" abstract="true" name="ShareholdersEquityTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="lmt_MissilesAndFireControlMember" abstract="true" name="MissilesAndFireControlMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="lmt_EmployeeServiceSharebasedCompensationNonvestedAwardsCompensationCostNotYetRecognizedRemainingPeriodForRecognition" abstract="false" name="EmployeeServiceSharebasedCompensationNonvestedAwardsCompensationCostNotYetRecognizedRemainingPeriodForRecognition" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="lmt_LoanNetMember" abstract="true" name="LoanNetMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="lmt_SignificantAccountingPoliciesTable" abstract="true" name="SignificantAccountingPoliciesTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="lmt_OtherFixedIncomeInvestmentsMember" abstract="true" name="OtherFixedIncomeInvestmentsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="lmt_FourPointZeroNinePercentNotesDueTwentyFiftyTwoMember" abstract="true" name="FourPointZeroNinePercentNotesDueTwentyFiftyTwoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="lmt_FourPointFourFivePercentNotesDueTwentyTwentyEightMember" abstract="true" name="FourPointFourFivePercentNotesDueTwentyTwentyEightMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="lmt_IncreaseDecreaseInNetIncomeLossPerShareDiluted" abstract="false" name="IncreaseDecreaseInNetIncomeLossPerShareDiluted" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:perShareItemType"/>
  <xs:element id="lmt_AeronauticsMember" abstract="true" name="AeronauticsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="lmt_FivePointSevenZeroPercentNotesDueTwentyFiftyFourMember" abstract="true" name="FivePointSevenZeroPercentNotesDueTwentyFiftyFourMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="lmt_RemainingPSUsGrantedInPeriodMember" abstract="true" name="RemainingPSUsGrantedInPeriodMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="lmt_TimePeriodEnvironmentalCostsAndRecoveryOfEnvironmentalCostsAreProjectedOver" abstract="false" name="TimePeriodEnvironmentalCostsAndRecoveryOfEnvironmentalCostsAreProjectedOver" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="lmt_DepreciationAndAmortizationIncludingDiscontinuedOperations" abstract="false" name="DepreciationAndAmortizationIncludingDiscontinuedOperations" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="lmt_FivePointTwoZeroPercentNotesDueTwentyFiftyFiveMember" abstract="true" name="FivePointTwoZeroPercentNotesDueTwentyFiftyFiveMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="lmt_LineOfCreditFacilityUnusedBorrowingCapacityTerminated" abstract="false" name="LineOfCreditFacilityUnusedBorrowingCapacityTerminated" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="lmt_RestrictedStockUnitsAndPerformanceStockUnitsMember" abstract="true" name="RestrictedStockUnitsAndPerformanceStockUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="lmt_ShareBasedCompensationArrangementByShareBasedPaymentAwardConversionRateOfTargetAward" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardConversionRateOfTargetAward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="lmt_ClassifiedFixedPriceIncentiveFeeContractMember" abstract="true" name="ClassifiedFixedPriceIncentiveFeeContractMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="lmt_EquitySecuritiesFVNIRealizedGainLossNetOfTax" abstract="false" name="EquitySecuritiesFVNIRealizedGainLossNetOfTax" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="lmt_CounterclaimForDamagesSought" abstract="false" name="CounterclaimForDamagesSought" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="lmt_SeveranceAndRestructuringCostsPerShareAfterTax" abstract="false" name="SeveranceAndRestructuringCostsPerShareAfterTax" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:perShareItemType"/>
  <xs:element id="lmt_StockBasedAwardsAndESOPActivity" abstract="false" name="StockBasedAwardsAndESOPActivity" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="lmt_FourPointFiveZeroPercentageAndSixPointOneFivePercentDueTwentyThirtySixMember" abstract="true" name="FourPointFiveZeroPercentageAndSixPointOneFivePercentDueTwentyThirtySixMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="lmt_ContractValue" abstract="false" name="ContractValue" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="lmt_NumberOfParticipants" abstract="false" name="NumberOfParticipants" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="lmt_LineOfCreditFacilityAccordionFeatureHigherBorrowingCapacityOption" abstract="false" name="LineOfCreditFacilityAccordionFeatureHigherBorrowingCapacityOption" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="lmt_RevenueFromContractWithCustomerNumberOfContractTypes" abstract="false" name="RevenueFromContractWithCustomerNumberOfContractTypes" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="lmt_OrganizationPolicyTextBlock" abstract="false" name="OrganizationPolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="lmt_IncreaseDecreaseInNetIncomeLoss" abstract="false" name="IncreaseDecreaseInNetIncomeLoss" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="lmt_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriodDomain" abstract="true" name="RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriodDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="lmt_ShareholdersEquityLineItems" abstract="true" name="ShareholdersEquityLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="lmt_AuditInformationAbstract" abstract="true" name="AuditInformationAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="lmt_SeveranceAndRestructuringCosts" abstract="false" name="SeveranceAndRestructuringCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="lmt_RotaryAndMissionSystemsMember" abstract="true" name="RotaryAndMissionSystemsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="lmt_RemainingHalfOfPSUsGrantedInPeriodMember" abstract="true" name="RemainingHalfOfPSUsGrantedInPeriodMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="lmt_LineOfCreditFacilityAccordionFeatureIncreaseLimit" abstract="false" name="LineOfCreditFacilityAccordionFeatureIncreaseLimit" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="lmt_ThreePointFiveFivePercentNotesDueTwentyTwentySixMember" abstract="true" name="ThreePointFiveFivePercentNotesDueTwentyTwentySixMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="lmt_ShareBasedCompensationArrangementByShareBasedPaymentAwardCompensationPlansAxis" abstract="true" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardCompensationPlansAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="lmt_OtherComprehensiveIncomeLossDefinedBenefitPlanNetPriorServiceCostCreditReclassificationAdjustmentFromAOCIAfterTax" abstract="false" name="OtherComprehensiveIncomeLossDefinedBenefitPlanNetPriorServiceCostCreditReclassificationAdjustmentFromAOCIAfterTax" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="lmt_OtherNotesFourPointEightFivePercentToNinePointOneThreePercentDueTwoThousandTwentyTwoToTwoThousandFortyOneMember" abstract="true" name="OtherNotesFourPointEightFivePercentToNinePointOneThreePercentDueTwoThousandTwentyTwoToTwoThousandFortyOneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="lmt_OnePointEightFivePercentNotesDueTwentyThirtyMember" abstract="true" name="OnePointEightFivePercentNotesDueTwentyThirtyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="lmt_RecognitionOfSettlementLossMember" abstract="true" name="RecognitionOfSettlementLossMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="lmt_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPlanTax" abstract="false" name="AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPlanTax" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="lmt_AccumulatedDefinedBenefitsPlansAdjustmentNetActuarialLossAttributableToParentMember" abstract="true" name="AccumulatedDefinedBenefitsPlansAdjustmentNetActuarialLossAttributableToParentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="lmt_NonCashNonOperatingPensionSettlementChargePerShareAfterTax" abstract="false" name="NonCashNonOperatingPensionSettlementChargePerShareAfterTax" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:perShareItemType"/>
  <xs:element id="lmt_UnitedStatesCommercialAndOtherMember" abstract="true" name="UnitedStatesCommercialAndOtherMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="lmt_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriodAxis" abstract="true" name="RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriodAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="lmt_ThreePointSixZeroPercentNotesDueTwentyThirtyFiveMember" abstract="true" name="ThreePointSixZeroPercentNotesDueTwentyThirtyFiveMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="lmt_FourPointSevenZeroPercentNotesDueTwentyFortySixMember" abstract="true" name="FourPointSevenZeroPercentNotesDueTwentyFortySixMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="lmt_OtherFixedIncomeInvestmentsBuyInContractsMember" abstract="true" name="OtherFixedIncomeInvestmentsBuyInContractsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="lmt_StockRepurchaseProgramAuthorizedAmountIncreaseAmount" abstract="false" name="StockRepurchaseProgramAuthorizedAmountIncreaseAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="lmt_PeriodOneMember" abstract="true" name="PeriodOneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="lmt_CapitalizedInternalUseSoftwareAccumulatedAmortization" abstract="false" name="CapitalizedInternalUseSoftwareAccumulatedAmortization" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="lmt_CommingledFundsMember" abstract="true" name="CommingledFundsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="lmt_NonCashNonOperatingPensionSettlementChargeAfterTax" abstract="false" name="NonCashNonOperatingPensionSettlementChargeAfterTax" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="lmt_FThirtyFiveProgramMember" abstract="true" name="FThirtyFiveProgramMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="lmt_OtherSecuritiesMember" abstract="true" name="OtherSecuritiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="lmt_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAociPensionAndOtherPostretirementBenefitPlansExcludingDiscontinuedOperationsNetOfTax" abstract="false" name="OtherComprehensiveIncomeLossReclassificationAdjustmentFromAociPensionAndOtherPostretirementBenefitPlansExcludingDiscontinuedOperationsNetOfTax" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="lmt_SikorskyAircraftCorporationMember" abstract="true" name="SikorskyAircraftCorporationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="lmt_NewYorkMetropolitanTransportationAuthorityMember" abstract="true" name="NewYorkMetropolitanTransportationAuthorityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="lmt_FivePointOneZeroPercentNotesDueTwentyTwentySevenMember" abstract="true" name="FivePointOneZeroPercentNotesDueTwentyTwentySevenMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="lmt_AccumulatedOtherNetAdjustmentAttributableToParentMember" abstract="true" name="AccumulatedOtherNetAdjustmentAttributableToParentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="lmt_OtherUnallocatedIncomeExpense" abstract="false" name="OtherUnallocatedIncomeExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="lmt_CostReimbursableContractMember" abstract="true" name="CostReimbursableContractMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="lmt_BuyInContractMember" abstract="true" name="BuyInContractMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="lmt_OtherUnallocatedExpensesNet" abstract="false" name="OtherUnallocatedExpensesNet" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="lmt_TwoPointEightZeroPercentNotesDueTwentyFiftyMember" abstract="true" name="TwoPointEightZeroPercentNotesDueTwentyFiftyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="lmt_FourPointThreeZeroPercentNotesDueTwentySixtyTwoMember" abstract="true" name="FourPointThreeZeroPercentNotesDueTwentySixtyTwoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="lmt_UnallocatedItemsAbstract" abstract="true" name="UnallocatedItemsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="lmt_ThreePointOneZeroPercentNotesDueTwentyTwentyThreeMember" abstract="true" name="ThreePointOneZeroPercentNotesDueTwentyTwentyThreeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="lmt_FourPointSevenFivePercentNotesDueTwentyThirtyFourMember" abstract="true" name="FourPointSevenFivePercentNotesDueTwentyThirtyFourMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="lmt_InternationalMember" abstract="true" name="InternationalMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="lmt_SeveranceCostsPerShareAfterTax" abstract="false" name="SeveranceCostsPerShareAfterTax" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:perShareItemType"/>
  <xs:element id="lmt_UnrecognizedTaxBenefitsIncreaseDecreaseResultingFromOtherNet" abstract="false" name="UnrecognizedTaxBenefitsIncreaseDecreaseResultingFromOtherNet" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="lmt_USGovernmentMember" abstract="true" name="USGovernmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="lmt_FourPointZeroSevenPercentNotesDueTwoThousandFortyTwoMember" abstract="true" name="FourPointZeroSevenPercentNotesDueTwoThousandFortyTwoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="lmt_FivePointTwoFivePercentNotesDueTwentyThirtyThreeMember" abstract="true" name="FivePointTwoFivePercentNotesDueTwentyThirtyThreeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="lmt_AccumulatedDefinedBenefitPlansAdjustmentOtherThanPensionAdjustmentsAttributableToParentMember" abstract="true" name="AccumulatedDefinedBenefitPlansAdjustmentOtherThanPensionAdjustmentsAttributableToParentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="lmt_SignificantAccountingPoliciesLineItems" abstract="true" name="SignificantAccountingPoliciesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="lmt_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostActualReturnonPlanAssets" abstract="false" name="DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostActualReturnonPlanAssets" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="lmt_IncreaseDecreaseInOperatingIncomeLoss" abstract="false" name="IncreaseDecreaseInOperatingIncomeLoss" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="lmt_CommingledEquityFundsMember" abstract="true" name="CommingledEquityFundsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="lmt_GainLossOnExtinguishmentOfDebtAfterTax" abstract="false" name="GainLossOnExtinguishmentOfDebtAfterTax" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="lmt_DefinedBenefitPlanCommingledEquityFundsMember" abstract="true" name="DefinedBenefitPlanCommingledEquityFundsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="lmt_PayablesReceivablesNetMember" abstract="true" name="PayablesReceivablesNetMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
</xs:schema>
