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  <xs:element id="cna_CashAndSecuritiesDepositedAsCollateralForLettersOfCredit" abstract="false" name="CashAndSecuritiesDepositedAsCollateralForLettersOfCredit" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="cna_ExternalCreditRatingUSGovernmentGovernmentAgenciesAndGovernmentSponsoredEnterprisesMember" abstract="true" name="ExternalCreditRatingUSGovernmentGovernmentAgenciesAndGovernmentSponsoredEnterprisesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
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  <xs:element id="cna_ExternalCreditRatingAAMember" abstract="true" name="ExternalCreditRatingAAMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
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  <xs:element id="cna_AdditionsToAllowanceForCreditLossesAbstract" abstract="true" name="AdditionsToAllowanceForCreditLossesAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
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</xs:schema>
