<?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/ownership" xmlns:ns2="http://www.sec.gov/edgar/common">
    <headerData>
        <submissionType>144</submissionType>
        <filerInfo>
            <filer>
                <filerCredentials>
                    <cik>0001238032</cik>
                    <ccc>XXXXXXXX</ccc>
                </filerCredentials>
            </filer>
            <liveTestFlag>LIVE</liveTestFlag>



        </filerInfo>
    </headerData>
    <formData>
        <issuerInfo>
            <issuerCik>0000927628</issuerCik>
            <issuerName>CAPITAL ONE FINANCIAL CORPORATION</issuerName>
            <secFileNumber>001-13300</secFileNumber>
            <issuerAddress>
                <ns2:street1>1680 Capital One Drive</ns2:street1>
                <ns2:city>McLean</ns2:city>
                <ns2:stateOrCountry>VA</ns2:stateOrCountry>
                <ns2:zipCode>22102</ns2:zipCode>
            </issuerAddress>
            <issuerContactPhone>(703) 720-1000</issuerContactPhone>
            <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>RICHARD FAIRBANK</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
            <relationshipsToIssuer>
                <relationshipToIssuer>Officer</relationshipToIssuer>
                <relationshipToIssuer>Director</relationshipToIssuer>
            </relationshipsToIssuer>
        </issuerInfo>
        <securitiesInformation>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <brokerOrMarketmakerDetails>
                <name>E*TRADE FINANCIAL CORPORATION</name>
                <address>
                    <ns2:street1>3 EDISON DRIVE</ns2:street1>
                    <ns2:city>ALPHARETTA</ns2:city>
                    <ns2:stateOrCountry>GA</ns2:stateOrCountry>
                    <ns2:zipCode>30005</ns2:zipCode>
                </address>
            </brokerOrMarketmakerDetails>
            <noOfUnitsSold>3891</noOfUnitsSold>
            <aggregateMarketValue>456569.94</aggregateMarketValue>
            <noOfUnitsOutstanding>381806215</noOfUnitsOutstanding>
            <approxSaleDate>07/25/2023</approxSaleDate>
            <securitiesExchangeName>NYSE</securitiesExchangeName>
        </securitiesInformation>
        <securitiesToBeSold>
            <securitiesClassTitle>COMMON</securitiesClassTitle>
            <acquiredDate>07/25/2023</acquiredDate>
            <natureOfAcquisitionTransaction>Stock Option Exercise</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>ISSUER</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>3891</amountOfSecuritiesAcquired>
            <paymentDate>07/25/2023</paymentDate>
            <natureOfPayment>Cash</natureOfPayment>
        </securitiesToBeSold>
        <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>RICHARD FAIRBANK</name>
                <address>
                    <ns2:street1>1680 Capital One Drive</ns2:street1>
                    <ns2:city>McLean</ns2:city>
                    <ns2:stateOrCountry>VA</ns2:stateOrCountry>
                    <ns2:zipCode>22102</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>07/24/2023</saleDate>
            <amountOfSecuritiesSold>3891</amountOfSecuritiesSold>
            <grossProceeds>449527.23</grossProceeds>
        </securitiesSoldInPast3Months>
        <noticeSignature>
            <noticeDate>07/25/2023</noticeDate>
            <planAdoptionDates>
                <planAdoptionDate>02/10/2023</planAdoptionDate>
            </planAdoptionDates>
            <signature>/s/ Richard D. Fairbank</signature>
        </noticeSignature>
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144
0001238032
XXXXXXXX
LIVE
0000927628
CAPITAL ONE FINANCIAL CORPORATION
001-13300
1680 Capital One Drive
McLean
VA
22102
(703) 720-1000
RICHARD FAIRBANK
Officer
Director
Common
E*TRADE FINANCIAL CORPORATION
3 EDISON DRIVE
ALPHARETTA
GA
30005
3891
456569.94
381806215
07/25/2023
NYSE
COMMON
07/25/2023
Stock Option Exercise
ISSUER
N
3891
07/25/2023
Cash
N
RICHARD FAIRBANK
1680 Capital One Drive
McLean
VA
22102
Common
07/24/2023
3891
449527.23
07/25/2023
02/10/2023
/s/ Richard D. Fairbank