<?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>0000942011</cik>
                    <ccc>XXXXXXXX</ccc>
                </filerCredentials>
            </filer>
            <liveTestFlag>LIVE</liveTestFlag>



        </filerInfo>
    </headerData>
    <formData>
        <issuerInfo>
            <issuerCik>0000898173</issuerCik>
            <issuerName>O'REILLY AUTOMOTIVE INC.</issuerName>
            <secFileNumber>000-21318</secFileNumber>
            <issuerAddress>
                <ns2:street1>233 South Patterson Avenue</ns2:street1>
                <ns2:city>Springfield</ns2:city>
                <ns2:stateOrCountry>MO</ns2:stateOrCountry>
                <ns2:zipCode>65802</ns2:zipCode>
            </issuerAddress>
            <issuerContactPhone>(417) 862-6708</issuerContactPhone>
            <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>L P OREILLY FAMILY REGISTER LLLP</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
            <relationshipsToIssuer>
                <relationshipToIssuer>Director</relationshipToIssuer>
            </relationshipsToIssuer>
        </issuerInfo>
        <securitiesInformation>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <brokerOrMarketmakerDetails>
                <name>Morgan Stanley Smith Barney LLC Executive Financial Services</name>
                <address>
                    <ns2:street1>1 New York Plaza</ns2:street1>
                    <ns2:street2>38th Floor</ns2:street2>
                    <ns2:city>New York</ns2:city>
                    <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                    <ns2:zipCode>10004</ns2:zipCode>
                </address>
            </brokerOrMarketmakerDetails>
            <noOfUnitsSold>1000</noOfUnitsSold>
            <aggregateMarketValue>982276.00</aggregateMarketValue>
            <noOfUnitsOutstanding>59162175</noOfUnitsOutstanding>
            <approxSaleDate>11/10/2023</approxSaleDate>
            <securitiesExchangeName>NASDAQ</securitiesExchangeName>
        </securitiesInformation>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>04/23/1993</acquiredDate>
            <natureOfAcquisitionTransaction>Gift from Affiliate</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Charles O'Reilly Sr</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>Y</isGiftTransaction>
            <donarAcquiredDate>04/23/1993</donarAcquiredDate>
            <amountOfSecuritiesAcquired>1000</amountOfSecuritiesAcquired>
            <natureOfPayment>NA</natureOfPayment>
        </securitiesToBeSold>
        <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
        <remarks>Sales that were executed on November 10, 2023 are being reported on this Form 144 filed on November 13, 2023 given the EDGAR system was not accepting filings on November 10, 2023 in observance of the federal holiday.</remarks>
        <noticeSignature>
            <noticeDate>11/10/2023</noticeDate>
            <planAdoptionDates/>
            <signature>/s/ Larry P O'Reilly</signature>
        </noticeSignature>
    </formData>
</edgarSubmission>
