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  <xsd:element id="cna_DefinedContributionPlanEmployerDiscretionaryContributionAmountPercent" name="DefinedContributionPlanEmployerDiscretionaryContributionAmountPercent" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="cna_DefinedContributionPlanEmployersMatchingContributionVestingPeriodinYears" name="DefinedContributionPlanEmployersMatchingContributionVestingPeriodinYears" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="cna_DirectAndCededEarnedPremiumsRelatedToBusinessThatIsOneHundredPercentReinsuredAsResultOfSignificantCaptiveProgram" name="DirectAndCededEarnedPremiumsRelatedToBusinessThatIsOneHundredPercentReinsuredAsResultOfSignificantCaptiveProgram" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cna_DiscountRateRiskPremium" name="DiscountRateRiskPremium" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="cna_DiscountedReservesForUnfundedStructureSettlementsDiscountAmount" name="DiscountedReservesForUnfundedStructureSettlementsDiscountAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="cna_DiscountedReservesForUnfundedStructuredSettlements" name="DiscountedReservesForUnfundedStructuredSettlements" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="cna_DiscountedReservesForWorkersCompensationLifetimeClaimReservesAndAccidentAndHealthClaimReserves" name="DiscountedReservesForWorkersCompensationLifetimeClaimReservesAndAccidentAndHealthClaimReserves" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="cna_DiscountedReservesForWorkersCompensationLifetimeClaimReservesAndAccidentAndHealthClaimReservesDiscountAmount" name="DiscountedReservesForWorkersCompensationLifetimeClaimReservesAndAccidentAndHealthClaimReservesDiscountAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="cna_DisposalGroupIncludingDiscontinuedOperationInsuranceClaimsandPolicyholdersBenefits" name="DisposalGroupIncludingDiscontinuedOperationInsuranceClaimsandPolicyholdersBenefits" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cna_DisposalGroupIncludingDiscontinuedOperationNetInvestmentIncome" name="DisposalGroupIncludingDiscontinuedOperationNetInvestmentIncome" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="cna_DisposalGroupIncludingDiscontinuedOperationNetRealizedInvestmentGains" name="DisposalGroupIncludingDiscontinuedOperationNetRealizedInvestmentGains" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="cna_DisposalGroupIncludingDiscontinuedOperationOtherOperatingExpenses" name="DisposalGroupIncludingDiscontinuedOperationOtherOperatingExpenses" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cna_DisposalGroupIncludingDiscontinuedOperationOtherRevenues" name="DisposalGroupIncludingDiscontinuedOperationOtherRevenues" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="cna_DisposalGroupIncludingDiscontinuedOperationsNetEarnedPremium" name="DisposalGroupIncludingDiscontinuedOperationsNetEarnedPremium" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cna_DocumentAndEntityInformationAbstract" name="DocumentAndEntityInformationAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cna_EmployerSubsidyonHealthCareCostsMember" name="EmployerSubsidyonHealthCareCostsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cna_EquityInNetIncomeLossOfSubsidiaries" name="EquityInNetIncomeLossOfSubsidiaries" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="cna_EquityInOtherComprehensiveIncomeOfSubsidiaries" name="EquityInOtherComprehensiveIncomeOfSubsidiaries" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="cna_FairValueOfCollateralTrustAccountEstablishedByNicoUnderAepLossPortfolioTransfer" name="FairValueOfCollateralTrustAccountEstablishedByNicoUnderAepLossPortfolioTransfer" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="cna_FairValueOfStockBasedAwardsVested" name="FairValueOfStockBasedAwardsVested" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cna_Fairvalueinputscreditriskcounterparty" name="Fairvalueinputscreditriskcounterparty" nillable="true" substitutionGroup="xbrli:item" type="xbrli:decimalItemType" xbrli:periodType="instant" />
  <xsd:element id="cna_FederalIncomeTaxesReceivedFromPaidToLoewsAmount" name="FederalIncomeTaxesReceivedFromPaidToLoewsAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cna_FeesandexpensesofinvestmentfacilitiesandservicesMember" name="FeesandexpensesofinvestmentfacilitiesandservicesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cna_FirstYearofEmploymentMember" name="FirstYearofEmploymentMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cna_Fixedmaturitysecuritiesandequitysecuritiesintheenergyandmetalsandminingsectorsamortizedcostorcostbasis" name="Fixedmaturitysecuritiesandequitysecuritiesintheenergyandmetalsandminingsectorsamortizedcostorcostbasis" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="cna_Fixedmaturitysecuritiesandequitysecuritiesintheenergyandmetalsandminingsectorsamortizedcostorcostbasisunrealizedlossposition" name="Fixedmaturitysecuritiesandequitysecuritiesintheenergyandmetalsandminingsectorsamortizedcostorcostbasisunrealizedlossposition" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="cna_Fixedmaturitysecuritiesandequitysecuritiesintheenergyandmetalsandminingsectorsatfairvalue" name="Fixedmaturitysecuritiesandequitysecuritiesintheenergyandmetalsandminingsectorsatfairvalue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="cna_Fixedmaturitysecuritiesandequitysecuritiesintheenergyandmetalsandminingsectorsatfairvalueunrealizedlossposition" name="Fixedmaturitysecuritiesandequitysecuritiesintheenergyandmetalsandminingsectorsatfairvalueunrealizedlossposition" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="cna_FutureCapitalCallCommitments" name="FutureCapitalCallCommitments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="cna_GatewayRiversInsuranceCompanyMember" name="GatewayRiversInsuranceCompanyMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cna_GrossAndNetCarriedClaimAndClaimAdjustmentExpenseReservesTableTextBlock" name="GrossAndNetCarriedClaimAndClaimAdjustmentExpenseReservesTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cna_GuaranteeagreementMember" name="GuaranteeagreementMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cna_GuaranteeandIndemnificationMember" name="GuaranteeandIndemnificationMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cna_GuarantyFundAndOtherInsuranceRelatedAssessmentsPolicyTextBlock" name="GuarantyFundAndOtherInsuranceRelatedAssessmentsPolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cna_HardyMember" name="HardyMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cna_ImpactOfLossPortfolioTransferOnConsolidatedStatementsOfOperationsTableTextBlock" name="ImpactOfLossPortfolioTransferOnConsolidatedStatementsOfOperationsTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="cna_ImpairmentsOtherThanTemporaryPolicyTextBlock" name="ImpairmentsOtherThanTemporaryPolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="cna_IncomeAsPercentageOfChangeInPartnershipEquityForAllLimitedPartnerships" name="IncomeAsPercentageOfChangeInPartnershipEquityForAllLimitedPartnerships" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="cna_IncomeLossFromContinuingOperationsBeforeEquityMethodInvestments" name="IncomeLossFromContinuingOperationsBeforeEquityMethodInvestments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="cna_IncomeLossFromContinuingOperationsBeforeIncomeTaxesAndIncomeLossFromSubsidiaries" name="IncomeLossFromContinuingOperationsBeforeIncomeTaxesAndIncomeLossFromSubsidiaries" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="cna_IncomeTaxExpenseBenefitOnNetRealizedInvestmentGainsLosses" name="IncomeTaxExpenseBenefitOnNetRealizedInvestmentGainsLosses" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cna_IncomeTaxExpenseBenefitOnOperatingIncomeLoss" name="IncomeTaxExpenseBenefitOnOperatingIncomeLoss" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cna_Increaseinshadowadjustmentnetoftax" name="Increaseinshadowadjustmentnetoftax" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cna_Insuranceclaimsandpolicyholdersbenefitsincludingpolicyholdersdividends" name="Insuranceclaimsandpolicyholdersbenefitsincludingpolicyholdersdividends" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cna_InternationalDomain" name="InternationalDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cna_InternationalMember" name="InternationalMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cna_InvestmentInSubsidiaries" name="InvestmentInSubsidiaries" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="cna_InvestmentIncomeIncludingRealizedGainsLossesOnTradingSecuritiesBeforeExpenses" name="InvestmentIncomeIncludingRealizedGainsLossesOnTradingSecuritiesBeforeExpenses" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="cna_InvestmentsthatExceedTenPercentofStockholdersEquity" name="InvestmentsthatExceedTenPercentofStockholdersEquity" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:periodType="instant" />
  <xsd:element id="cna_LargestRecoverablesFromSingleReinsurer" name="LargestRecoverablesFromSingleReinsurer" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="cna_LegalProceedingsAndContingentLiabilitiesAbstract" name="LegalProceedingsAndContingentLiabilitiesAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="cna_LiabilityForLongTermCareProductsInterestRateYearOfIssueMaximum" name="LiabilityForLongTermCareProductsInterestRateYearOfIssueMaximum" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="cna_LiabilityForLongTermCareProductsInterestRateYearOfIssueMinimum" name="LiabilityForLongTermCareProductsInterestRateYearOfIssueMinimum" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="cna_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseForeignCtaAndOther" name="LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseForeignCtaAndOther" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="cna_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaimsAmortizationOfDiscount" name="LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaimsAmortizationOfDiscount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cna_Liabilityforunpaidclaimandclaimadjustmentexpensegross" name="Liabilityforunpaidclaimandclaimadjustmentexpensegross" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="cna_LifeAndGroupNonCoreMember" name="LifeAndGroupNonCoreMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cna_LifeCompanyMember" name="LifeCompanyMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cna_LifeSettlementContractsIncludedInOtherAssetsMember" name="LifeSettlementContractsIncludedInOtherAssetsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cna_LimitedPartnershipEquityRelatedHedgeFundStrategyPlanAssets" name="LimitedPartnershipEquityRelatedHedgeFundStrategyPlanAssets" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="cna_LimitedPartnershipHedgeFundMultiStrategyPlanAssets" name="LimitedPartnershipHedgeFundMultiStrategyPlanAssets" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="cna_LimitedPartnershipHedgeFundStrategyDistressedInvestmentsPlanAssets" name="LimitedPartnershipHedgeFundStrategyDistressedInvestmentsPlanAssets" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="cna_LimitedPartnershipInvestments" name="LimitedPartnershipInvestments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="cna_LimitedPartnershipsInvestedInPrivateDebtAndEquity" name="LimitedPartnershipsInvestedInPrivateDebtAndEquity" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="cna_LloydsSyndicateCapacityMember" name="LloydsSyndicateCapacityMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cna_Longtermcarepremiumdeficiency" name="Longtermcarepremiumdeficiency" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="cna_LossPortfolioTransferMember" name="LossPortfolioTransferMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cna_Lossonreinsurancetransaction" name="Lossonreinsurancetransaction" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cna_Lumpsumpensionsettlementpayment" name="Lumpsumpensionsettlementpayment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="cna_Lumpsumsettlementacceptanceratebyretirementplanparticipants" name="Lumpsumsettlementacceptanceratebyretirementplanparticipants" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="cna_MarketableSecuritiesFixedMaturitiesAtAmortizedCost" name="MarketableSecuritiesFixedMaturitiesAtAmortizedCost" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="cna_MeasurementPeriodofSpecificAnnualPerformanceGoalsinYears" name="MeasurementPeriodofSpecificAnnualPerformanceGoalsinYears" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cna_MiddleMarketsMember" name="MiddleMarketsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cna_MortalityAssumption" name="MortalityAssumption" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="cna_MortgageLoanCommitments" name="MortgageLoanCommitments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="cna_NetAEPadversedevelopmentbeforeconsiderationofLPT" name="NetAEPadversedevelopmentbeforeconsiderationofLPT" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cna_NetCaseReserves" name="NetCaseReserves" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="cna_NetChangeInUnrealizedGainsLossesInInvestmentsTableTextBlock" name="NetChangeInUnrealizedGainsLossesInInvestmentsTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="cna_NetIbnrReserves" name="NetIbnrReserves" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="cna_NetInvestmentIncomeAndGainsLossesOnTradingSecurities" name="NetInvestmentIncomeAndGainsLossesOnTradingSecurities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="cna_NetInvestmentIncomeTableTextBlock" name="NetInvestmentIncomeTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="cna_NetOperatingIncomeLossFromContinuingOperationsAttributableToParent" name="NetOperatingIncomeLossFromContinuingOperationsAttributableToParent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="cna_NetPriorYearClaimAndAllocatedClaimAdjustmentExpenseReserveAndPremiumDevelopmentTableTextBlock" name="NetPriorYearClaimAndAllocatedClaimAdjustmentExpenseReserveAndPremiumDevelopmentTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="cna_NetPriorYearClaimAndAllocatedClaimAdjustmentExpenseReserveDevelopmentCommercialAuto" name="NetPriorYearClaimAndAllocatedClaimAdjustmentExpenseReserveDevelopmentCommercialAuto" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cna_NetPriorYearClaimAndAllocatedClaimAdjustmentExpenseReserveDevelopmentForInternationalSegmentTableTextBlock" name="NetPriorYearClaimAndAllocatedClaimAdjustmentExpenseReserveDevelopmentForInternationalSegmentTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="cna_NetPriorYearClaimAndAllocatedClaimAdjustmentExpenseReserveDevelopmentGeneralLiability" name="NetPriorYearClaimAndAllocatedClaimAdjustmentExpenseReserveDevelopmentGeneralLiability" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cna_NetPriorYearClaimAndAllocatedClaimAdjustmentExpenseReserveDevelopmentMedicalProfessionalLiability" name="NetPriorYearClaimAndAllocatedClaimAdjustmentExpenseReserveDevelopmentMedicalProfessionalLiability" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cna_NetPriorYearClaimAndAllocatedClaimAdjustmentExpenseReserveDevelopmentOther" name="NetPriorYearClaimAndAllocatedClaimAdjustmentExpenseReserveDevelopmentOther" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cna_NetPriorYearClaimAndAllocatedClaimAdjustmentExpenseReserveDevelopmentPropertyAndOther" name="NetPriorYearClaimAndAllocatedClaimAdjustmentExpenseReserveDevelopmentPropertyAndOther" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cna_NetPriorYearClaimAndAllocatedClaimAdjustmentExpenseReserveDevelopmentSurety" name="NetPriorYearClaimAndAllocatedClaimAdjustmentExpenseReserveDevelopmentSurety" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cna_NetPriorYearClaimAndAllocatedClaimAdjustmentExpenseReserveDevelopmentWarranty" name="NetPriorYearClaimAndAllocatedClaimAdjustmentExpenseReserveDevelopmentWarranty" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cna_NetPriorYearClaimAndAllocatedClaimAdjustmentExpenseReserveDevelopmentWorkersCompensation" name="NetPriorYearClaimAndAllocatedClaimAdjustmentExpenseReserveDevelopmentWorkersCompensation" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cna_NetPriorYearClaimandAllocatedClaimAdjustmentExpenseReserveDevelopmentCommutations" name="NetPriorYearClaimandAllocatedClaimAdjustmentExpenseReserveDevelopmentCommutations" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cna_NetPriorYearClaimandAllocatedClaimAdjustmentExpenseReserveDevelopmentLiability" name="NetPriorYearClaimandAllocatedClaimAdjustmentExpenseReserveDevelopmentLiability" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cna_NetPriorYearClaimandAllocatedClaimAdjustmentExpenseReserveDevelopmentOtherProfessionalLiability" name="NetPriorYearClaimandAllocatedClaimAdjustmentExpenseReserveDevelopmentOtherProfessionalLiability" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cna_NetPriorYearClaimandAllocatedClaimAdjustmentExpenseReserveDevelopmentPropertyMarine" name="NetPriorYearClaimandAllocatedClaimAdjustmentExpenseReserveDevelopmentPropertyMarine" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cna_NetPriorYearClaimandAllocatedClaimAdjustmentExpenseReserveDevelopmentWorkersCompensationReinsurancePool" name="NetPriorYearClaimandAllocatedClaimAdjustmentExpenseReserveDevelopmentWorkersCompensationReinsurancePool" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cna_NetRealizedInvestmentGainsLosses" name="NetRealizedInvestmentGainsLosses" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="cna_NetRealizedInvestmentGainsLossesContinuingAndDiscontinuingOperations" name="NetRealizedInvestmentGainsLossesContinuingAndDiscontinuingOperations" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="cna_NetReinsuranceReceivablesTransferrredToNicoUnderAepLossPortfolioTransfer" name="NetReinsuranceReceivablesTransferrredToNicoUnderAepLossPortfolioTransfer" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="cna_NetUnrealizedGainsLossesOnInvestments" name="NetUnrealizedGainsLossesOnInvestments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="cna_NetprioryearclaimandallocatedclaimadjustmentexpensereservedevelopmentOtherProfessionalLiabilityandManagementLiability" name="NetprioryearclaimandallocatedclaimadjustmentexpensereservedevelopmentOtherProfessionalLiabilityandManagementLiability" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cna_NetprioryearclaimandallocatedclaimadjustmentexpensereservedevelopmentforCommercialsegmentTableTextBlock" name="NetprioryearclaimandallocatedclaimadjustmentexpensereservedevelopmentforCommercialsegmentTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="cna_NetprioryearclaimandallocatedclaimadjustmentexpensereservedevelopmentforSpecialtysegmentTableTextBlock" name="NetprioryearclaimandallocatedclaimadjustmentexpensereservedevelopmentforSpecialtysegmentTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="cna_Netunrealizedgainslossesondiscontinuedoperationsandotheraftertax" name="Netunrealizedgainslossesondiscontinuedoperationsandotheraftertax" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="cna_NonIncomeProducingFixedMaturitySecurities" name="NonIncomeProducingFixedMaturitySecurities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="cna_NotesReceivablefortheIssuanceofCommonStockAbstract" name="NotesReceivablefortheIssuanceofCommonStockAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="cna_OperatingIncomeLossFromContinuingOperationsBeforeIncomeTax" name="OperatingIncomeLossFromContinuingOperationsBeforeIncomeTax" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cna_OperatingLeasesCommitmentsAndContingenciesAndGuaranteesAbstract" name="OperatingLeasesCommitmentsAndContingenciesAndGuaranteesAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="cna_OperatingLeasesCommitmentsandContingenciesandGuaranteeTextBlock" name="OperatingLeasesCommitmentsandContingenciesandGuaranteeTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="cna_OperatingRevenues" name="OperatingRevenues" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cna_OtherCommercialInsuranceMember" name="OtherCommercialInsuranceMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cna_OtherComprehensiveIncomeLossPensionandOtherPostretirementBenefitPlansCurtailmentandOtherbeforetax" name="OtherComprehensiveIncomeLossPensionandOtherPostretirementBenefitPlansCurtailmentandOtherbeforetax" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="cna_OtherComprehensiveIncomeLossPensionandOtherPostretirementBenefitPlansSettlementsbeforeTax" name="OtherComprehensiveIncomeLossPensionandOtherPostretirementBenefitPlansSettlementsbeforeTax" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="cna_OtherInsuranceRelatedExpenses" name="OtherInsuranceRelatedExpenses" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cna_OtherInvestedAssetsMember" name="OtherInvestedAssetsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cna_OtherInvestmentIncomeMember" name="OtherInvestmentIncomeMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cna_PaymentsToPurchaseMortgageLoans" name="PaymentsToPurchaseMortgageLoans" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cna_PercentageOfAssumedEarnedToNetEarnedPremiumsDomain" name="PercentageOfAssumedEarnedToNetEarnedPremiumsDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cna_PercentageOfAssumedPremiumWrittenToPremiumWrittenNet" name="PercentageOfAssumedPremiumWrittenToPremiumWrittenNet" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cna_PercentageOfAssumedPremiumsEarnedToNetPremiumsEarnedMember" name="PercentageOfAssumedPremiumsEarnedToNetPremiumsEarnedMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cna_PercentageOfAssumedPremiumsWrittenToNetPremiumsWrittenMember" name="PercentageOfAssumedPremiumsWrittenToNetPremiumsWrittenMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cna_PercentageOfAssumedWrittenToNetWrittenPremiumsDomain" name="PercentageOfAssumedWrittenToNetWrittenPremiumsDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cna_PercentageOfBilledReceivablesComparedToTotalReinsuranceReceivables" name="PercentageOfBilledReceivablesComparedToTotalReinsuranceReceivables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="cna_PercentageOfDistressedInvestmentsLimitedPartnershipHedgeFundStrategies" name="PercentageOfDistressedInvestmentsLimitedPartnershipHedgeFundStrategies" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="cna_PercentageOfEquityRelatedLimitedPartnershipHedgeFundStrategies" name="PercentageOfEquityRelatedLimitedPartnershipHedgeFundStrategies" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="cna_PercentageOfFixedIncomeLimitedPartnershipHedgeFundStrategies" name="PercentageOfFixedIncomeLimitedPartnershipHedgeFundStrategies" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="cna_PercentageOfLimitedPartnershipsEmployingHedgeFundStrategiesFocusedOnFixedIncomeAndEquityInvestments" name="PercentageOfLimitedPartnershipsEmployingHedgeFundStrategiesFocusedOnFixedIncomeAndEquityInvestments" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="cna_PercentageOfLimitedPartnershipsReportedOnCurrentBasis" name="PercentageOfLimitedPartnershipsReportedOnCurrentBasis" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="cna_PercentageOfLimitedPartnershipsReportedOnOneMonthLag" name="PercentageOfLimitedPartnershipsReportedOnOneMonthLag" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="cna_PercentageOfMultistrategyApproachLimitedPartnershipHedgeFundStrategies" name="PercentageOfMultistrategyApproachLimitedPartnershipHedgeFundStrategies" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="cna_PercentageofassumedpremiumsearnedtonetpremiumsearnedAxis" name="PercentageofassumedpremiumsearnedtonetpremiumsearnedAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cna_PercentageofassumedpremiumswrittentonetpremiumswrittenAxis" name="PercentageofassumedpremiumswrittentonetpremiumswrittenAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="cna_Percentageofforeigndirectwrittenpremiums" name="Percentageofforeigndirectwrittenpremiums" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="cna_PerformanceBasedAdjustmentShareBasedCompensationEquityInstrumentsOtherThanOptions" name="PerformanceBasedAdjustmentShareBasedCompensationEquityInstrumentsOtherThanOptions" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="cna_PerformanceBasedAdjustmentShareBasedCompensationEquityInstrumentsOtherThanOptionsWeightedAverageGrantDateFairValue" name="PerformanceBasedAdjustmentShareBasedCompensationEquityInstrumentsOtherThanOptionsWeightedAverageGrantDateFairValue" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="duration" />
  <xsd:element id="cna_PretaxFavorableUnfavorableNetPriorYearClaimAndAllocatedClaimAdjustmentExpenseReserveDevelopmentExcludingLifeGroup" name="PretaxFavorableUnfavorableNetPriorYearClaimAndAllocatedClaimAdjustmentExpenseReserveDevelopmentExcludingLifeGroup" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cna_PretaxFavorableUnfavorableNetPriorYearClaimAndAllocatedClaimAdjustmentExpenseReserveDevelopmentLifeGroup" name="PretaxFavorableUnfavorableNetPriorYearClaimAndAllocatedClaimAdjustmentExpenseReserveDevelopmentLifeGroup" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cna_PretaxFavorableUnfavorablePremiumDevelopmentExcludingLifeGroup" name="PretaxFavorableUnfavorablePremiumDevelopmentExcludingLifeGroup" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cna_Pretaximpactofdeferredretroactivereinsurancebenefit" name="Pretaximpactofdeferredretroactivereinsurancebenefit" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cna_PrivateOfferingPrice" name="PrivateOfferingPrice" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="cna_ProfessionalManagementLiabilityMember" name="ProfessionalManagementLiabilityMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cna_ProvisionforuncollectiblethirdpartyreinsuranceonAEP" name="ProvisionforuncollectiblethirdpartyreinsuranceonAEP" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cna_RangeofSharesInitiallyGrantedPayableBasedUponAttainmentofSpecificAnnualPerformanceGoals" name="RangeofSharesInitiallyGrantedPayableBasedUponAttainmentofSpecificAnnualPerformanceGoals" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cna_RateMember" name="RateMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cna_ReductionOfNetReservesDueToDispositionOfSubsidiaries" name="ReductionOfNetReservesDueToDispositionOfSubsidiaries" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cna_ReductionOfNetUnrealizedGainsOnInvestmentsIncludedInAociDueToShadowAdjustments" name="ReductionOfNetUnrealizedGainsOnInvestmentsIncludedInAociDueToShadowAdjustments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="cna_ReinsurancePremiumPaidToNicoUnderAepLossPortfolioTransfer" name="ReinsurancePremiumPaidToNicoUnderAepLossPortfolioTransfer" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="cna_ReservesBeginningOfYearAbstract" name="ReservesBeginningOfYearAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="cna_Retroactivereinsurancebenefitrecognized" name="Retroactivereinsurancebenefitrecognized" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cna_RevenuesByLineOfBusinessAbstract" name="RevenuesByLineOfBusinessAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cna_ScheduleIiBalanceSheetParentheticalAbstract" name="ScheduleIiBalanceSheetParentheticalAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="cna_ScheduleOfAmountsReceivableFromReinsurersTableTextBlock" name="ScheduleOfAmountsReceivableFromReinsurersTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cna_ScheduleOfAvailableForSaleAndTradingSecuritiesTable" name="ScheduleOfAvailableForSaleAndTradingSecuritiesTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="cna_ScheduleOfStatutoryFinancialInformationTableTextBlock" name="ScheduleOfStatutoryFinancialInformationTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cna_ScheduleViSupplementalInformationParentheticalAbstract" name="ScheduleViSupplementalInformationParentheticalAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cna_ScheduleofDefinedBenefitandContributionPlansDisclosureTable" name="ScheduleofDefinedBenefitandContributionPlansDisclosureTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="cna_ScheduleofOtherIntangibleAssetsTableTextBlock" name="ScheduleofOtherIntangibleAssetsTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cna_SeniorNotes3.950faceamountof550dueMay152024Member" name="SeniorNotes3.950faceamountof550dueMay152024Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cna_SeniorNotes5750FaceAmount400DueAugust152021Member" name="SeniorNotes5750FaceAmount400DueAugust152021Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cna_SeniorNotes5875FaceAmount500DueAugust152020Member" name="SeniorNotes5875FaceAmount500DueAugust152020Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cna_SeniorNotes6500FaceAmountOf350DueAugust152016Member" name="SeniorNotes6500FaceAmountOf350DueAugust152016Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cna_SeniorNotes6950FaceAmount150DueJanuary152018Member" name="SeniorNotes6950FaceAmount150DueJanuary152018Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cna_SeniorNotes7350FaceAmount350DueNovember152019Member" name="SeniorNotes7350FaceAmount350DueNovember152019Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cna_SeparateAccountBusinessMember" name="SeparateAccountBusinessMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cna_ShorttermInvestandotherMember" name="ShorttermInvestandotherMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cna_SignificantCaptiveProgramMember" name="SignificantCaptiveProgramMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cna_SmallBusinessMember" name="SmallBusinessMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cna_SpecialtyDomain" name="SpecialtyDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cna_SpecialtyMember" name="SpecialtyMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cna_StatutoryAccountingPracticesDividendsPaidintheprecedingtwelvemonths" name="StatutoryAccountingPracticesDividendsPaidintheprecedingtwelvemonths" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cna_StatutoryAccountingPracticesStatutoryAmountAvailableforDividendPaymentsBeforeConsiderationofStatutoryDividendsPaidintheprecedingtwelvemonths" name="StatutoryAccountingPracticesStatutoryAmountAvailableforDividendPaymentsBeforeConsiderationofStatutoryDividendsPaidintheprecedingtwelvemonths" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="cna_StockBasedCompensation" name="StockBasedCompensation" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="cna_StockBasedCompensationAndOther" name="StockBasedCompensationAndOther" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="cna_StockOptionsandSARsMaximumTermFollowingDateofGrantinYears" name="StockOptionsandSARsMaximumTermFollowingDateofGrantinYears" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cna_StockbasedcompensationAxis" name="StockbasedcompensationAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cna_StockbasedcompensationDomain" name="StockbasedcompensationDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cna_StockholdersEquityAndStatutoryAccountingPracticesAbstract" name="StockholdersEquityAndStatutoryAccountingPracticesAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="cna_StockholdersEquityAndStatutoryAccountingPracticesTextBlock" name="StockholdersEquityAndStatutoryAccountingPracticesTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cna_SubleaseMember" name="SubleaseMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cna_SubsidiariesOfBerkshireHathawayGroupMember" name="SubsidiariesOfBerkshireHathawayGroupMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cna_SubsidiariesOfHartfordInsuranceGroupMember" name="SubsidiariesOfHartfordInsuranceGroupMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cna_SuretyMember" name="SuretyMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cna_TaxespaidMember" name="TaxespaidMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cna_TotalPretaxFavorableUnfavorableNetPriorYearDevelopmentExcludingLifeGroup" name="TotalPretaxFavorableUnfavorableNetPriorYearDevelopmentExcludingLifeGroup" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cna_TotalconsiderationpaidtoNICOunderAEPLossPortfolioTransfer" name="TotalconsiderationpaidtoNICOunderAEPLossPortfolioTransfer" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="cna_Transfertonetassetsheldforsale" name="Transfertonetassetsheldforsale" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cna_ValueOfBusinessAcquiredMember" name="ValueOfBusinessAcquiredMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cna_VestingPeriodFollowingDateofGrantinYears" name="VestingPeriodFollowingDateofGrantinYears" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cna_WarrantyAlternativeRisksMember" name="WarrantyAlternativeRisksMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cna_WeightedAverageNumberOfSharesOustandingBasicAndDilutedAbstract" name="WeightedAverageNumberOfSharesOustandingBasicAndDilutedAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="cna_WorkersCompensationLifetimeClaimReservesAndAccidentAndHealthClaimReservesAreDiscountedAtInterestRatesMaximum" name="WorkersCompensationLifetimeClaimReservesAndAccidentAndHealthClaimReservesAreDiscountedAtInterestRatesMaximum" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="cna_WorkersCompensationLifetimeClaimReservesAndAccidentAndHealthClaimReservesAreDiscountedAtInterestRatesMinimum" name="WorkersCompensationLifetimeClaimReservesAndAccidentAndHealthClaimReservesAreDiscountedAtInterestRatesMinimum" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="cna_Writeoffofdeferredacquisitioncostassetduetolongtermcarepremiumdeficiency" name="Writeoffofdeferredacquisitioncostassetduetolongtermcarepremiumdeficiency" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
</xsd:schema>
</XBRL>