<?xml version="1.0" encoding="UTF-8"?><ns2:edgarSubmission xmlns:com="http://www.sec.gov/edgar/common" xmlns:ns2="http://www.sec.gov/edgar/ownership">
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                <ns2:filerCredentials>
                    <ns2:cik>0001024547</ns2:cik>
                    <ns2:ccc>XXXXXXXX</ns2:ccc>
                </ns2:filerCredentials>
            </ns2:filer>
            <ns2:liveTestFlag>LIVE</ns2:liveTestFlag>



        </ns2:filerInfo>
    </ns2:headerData>
    <ns2:formData>
        <ns2:issuerInfo>
            <ns2:issuerCik>0000822818</ns2:issuerCik>
            <ns2:issuerName>Clean Harbors, Inc.</ns2:issuerName>
            <ns2:secFileNumber>001-34223</ns2:secFileNumber>
            <ns2:issuerAddress>
                <com:street1>42 Longwater Drive</com:street1>
                <com:street2>P.0. Box 9149</com:street2>
                <com:city>Norwell</com:city>
                <com:stateOrCountry>MA</com:stateOrCountry>
                <com:zipCode>02061</com:zipCode>
            </ns2:issuerAddress>
            <ns2:issuerContactPhone>1-781-792-5000</ns2:issuerContactPhone>
            <ns2:nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Alan S. McKim</ns2:nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
            <ns2:relationshipsToIssuer>
                <ns2:relationshipToIssuer>Officer</ns2:relationshipToIssuer>
            </ns2:relationshipsToIssuer>
        </ns2:issuerInfo>
        <ns2:securitiesInformation>
            <ns2:securitiesClassTitle>Common</ns2:securitiesClassTitle>
            <ns2:brokerOrMarketmakerDetails>
                <ns2:name>Goldman Sachs &amp; Co. LLC</ns2:name>
                <ns2:address>
                    <com:street1>200 West Street</com:street1>
                    <com:city>New York</com:city>
                    <com:stateOrCountry>NY</com:stateOrCountry>
                    <com:zipCode>10282</com:zipCode>
                </ns2:address>
            </ns2:brokerOrMarketmakerDetails>
            <ns2:noOfUnitsSold>75000</ns2:noOfUnitsSold>
            <ns2:aggregateMarketValue>12473250</ns2:aggregateMarketValue>
            <ns2:noOfUnitsOutstanding>54086261</ns2:noOfUnitsOutstanding>
            <ns2:approxSaleDate>11/16/2023</ns2:approxSaleDate>
            <ns2:securitiesExchangeName>NYSE</ns2:securitiesExchangeName>
        </ns2:securitiesInformation>
        <ns2:securitiesToBeSold>
            <ns2:securitiesClassTitle>Common</ns2:securitiesClassTitle>
            <ns2:acquiredDate>11/11/2009</ns2:acquiredDate>
            <ns2:natureOfAcquisitionTransaction>Acquired from public market</ns2:natureOfAcquisitionTransaction>
            <ns2:nameOfPersonfromWhomAcquired>Public Market</ns2:nameOfPersonfromWhomAcquired>
            <ns2:isGiftTransaction>N</ns2:isGiftTransaction>
            <ns2:amountOfSecuritiesAcquired>75000</ns2:amountOfSecuritiesAcquired>
            <ns2:paymentDate>11/11/2009</ns2:paymentDate>
            <ns2:natureOfPayment>Cash</ns2:natureOfPayment>
        </ns2:securitiesToBeSold>
        <ns2:nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</ns2:nothingToReportFlagOnSecuritiesSoldInPast3Months>
        <ns2:remarks>All shares to be sold by Alan S. McKim 2007 Trust dtd 04/04/2007</ns2:remarks>
        <ns2:noticeSignature>
            <ns2:noticeDate>11/16/2023</ns2:noticeDate>
            <ns2:planAdoptionDates/>
            <ns2:signature>Goldman Sachs &amp; Co. LLC on behalf of Alan S. McKim</ns2:signature>
        </ns2:noticeSignature>
    </ns2:formData>
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144
0001024547
XXXXXXXX
LIVE
0000822818
Clean Harbors, Inc.
001-34223
42 Longwater Drive
P.0. Box 9149
Norwell
MA
02061
1-781-792-5000
Alan S. McKim
Officer
Common
Goldman Sachs & Co. LLC
200 West Street
New York
NY
10282
75000
12473250
54086261
11/16/2023
NYSE
Common
11/11/2009
Acquired from public market
Public Market
N
75000
11/11/2009
Cash
Y
All shares to be sold by Alan S. McKim 2007 Trust dtd 04/04/2007
11/16/2023
Goldman Sachs & Co. LLC on behalf of Alan S. McKim