<?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>0001604659</cik>
                    <ccc>XXXXXXXX</ccc>
                </filerCredentials>
            </filer>
            <liveTestFlag>LIVE</liveTestFlag>



        </filerInfo>
    </headerData>
    <formData>
        <issuerInfo>
            <issuerCik>0001596967</issuerCik>
            <issuerName>MOELIS &amp; CO.</issuerName>
            <secFileNumber>001-36418</secFileNumber>
            <issuerAddress>
                <ns2:street1>399 Park Avenue</ns2:street1>
                <ns2:street2>4th Floor</ns2:street2>
                <ns2:city>New York</ns2:city>
                <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                <ns2:zipCode>10022</ns2:zipCode>
            </issuerAddress>
            <issuerContactPhone>(212) 883-3800</issuerContactPhone>
            <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>ELIZABETH A CRAIN</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
            <relationshipsToIssuer>
                <relationshipToIssuer>Officer</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>5588</noOfUnitsSold>
            <aggregateMarketValue>268569.34</aggregateMarketValue>
            <noOfUnitsOutstanding>66573485</noOfUnitsOutstanding>
            <approxSaleDate>08/02/2023</approxSaleDate>
            <securitiesExchangeName>NYSE</securitiesExchangeName>
        </securitiesInformation>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>02/22/2023</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock Units Vested under Issuer S-8 Registered Plan</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>5588</amountOfSecuritiesAcquired>
            <paymentDate>02/22/2023</paymentDate>
            <natureOfPayment>Services Rendered</natureOfPayment>
        </securitiesToBeSold>
        <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>ELIZABETH A CRAIN</name>
                <address>
                    <ns2:street1>399 Park Avenue</ns2:street1>
                    <ns2:street2>4th Floor</ns2:street2>
                    <ns2:city>New York</ns2:city>
                    <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                    <ns2:zipCode>10022</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>07/31/2023</saleDate>
            <amountOfSecuritiesSold>5588</amountOfSecuritiesSold>
            <grossProceeds>268768.27</grossProceeds>
        </securitiesSoldInPast3Months>
        <noticeSignature>
            <noticeDate>08/02/2023</noticeDate>
            <planAdoptionDates/>
            <signature>/s/ Elizabeth Crain</signature>
        </noticeSignature>
    </formData>
</edgarSubmission>
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144
0001604659
XXXXXXXX
LIVE
0001596967
MOELIS & CO.
001-36418
399 Park Avenue
4th Floor
New York
NY
10022
(212) 883-3800
ELIZABETH A CRAIN
Officer
Common
Morgan Stanley Smith Barney LLC Executive Financial Services
1 New York Plaza
38th Floor
New York
NY
10004
5588
268569.34
66573485
08/02/2023
NYSE
Common
02/22/2023
Restricted Stock Units Vested under Issuer S-8 Registered Plan
Issuer
N
5588
02/22/2023
Services Rendered
N
ELIZABETH A CRAIN
399 Park Avenue
4th Floor
New York
NY
10022
Common
07/31/2023
5588
268768.27
08/02/2023
/s/ Elizabeth Crain