content: <?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/ownership" xmlns:com="http://www.sec.gov/edgar/common">
    <!-- Generated by Workiva -->
    <headerData>
      <submissionType>144</submissionType>
      <filerInfo>
        <filer>
          <filerCredentials>
            <cik>0002006102</cik>
            <ccc>XXXXXXXX</ccc>
          </filerCredentials>
        </filer>
        <liveTestFlag>LIVE</liveTestFlag>
  
  
  
      </filerInfo>
    </headerData>
    <formData>
      <issuerInfo>
        <issuerCik>0001780232</issuerCik>
        <issuerName>GFL Environmental Inc.</issuerName>
        <secFileNumber>001-39240</secFileNumber>
        <issuerAddress>
          <com:street1>100 New Park Place, Suite 500</com:street1>
          <com:city>Vaughan, Ontario</com:city>
          <com:stateOrCountry>Z4</com:stateOrCountry>
          <com:zipCode>L4K 0H9</com:zipCode>
        </issuerAddress>
        <issuerContactPhone>905-326-0101</issuerContactPhone>
        <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Gregory Gerald Yorston</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
        <relationshipsToIssuer>
          <relationshipToIssuer>Affiliate</relationshipToIssuer>
        </relationshipsToIssuer>
      </issuerInfo>
      <securitiesInformation>
        <securitiesClassTitle>Subordinate Voting Shares</securitiesClassTitle>
        <brokerOrMarketmakerDetails>
          <name>J.P. Morgan Securities LLC</name>
          <address>
            <com:street1>390 Madison Avenue - 6th Floor</com:street1>
            <com:city>New York</com:city>
            <com:stateOrCountry>NY</com:stateOrCountry>
            <com:zipCode>10017</com:zipCode>
          </address>
        </brokerOrMarketmakerDetails>
        <noOfUnitsSold>66410</noOfUnitsSold>
        <aggregateMarketValue>2296457.8</aggregateMarketValue>
        <noOfUnitsOutstanding>357342405</noOfUnitsOutstanding>
        <approxSaleDate>12/28/2023</approxSaleDate>
        <securitiesExchangeName>NYSE</securitiesExchangeName>
      </securitiesInformation>
      <securitiesToBeSold>
        <securitiesClassTitle>Subordinate Voting Shares</securitiesClassTitle>
        <acquiredDate>09/01/2023</acquiredDate>
        <natureOfAcquisitionTransaction>Vested Restricted Stock Units</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>42708</amountOfSecuritiesAcquired>
        <paymentDate>09/01/2023</paymentDate>
        <natureOfPayment>Compensation for Services Rendered</natureOfPayment>
      </securitiesToBeSold>
      <securitiesToBeSold>
        <securitiesClassTitle>Subordinate Voting Shares</securitiesClassTitle>
        <acquiredDate>09/04/2020</acquiredDate>
        <natureOfAcquisitionTransaction>Vested Restricted Stock Units</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>23702</amountOfSecuritiesAcquired>
        <paymentDate>09/04/2020</paymentDate>
        <natureOfPayment>Compensation for Services Rendered</natureOfPayment>
      </securitiesToBeSold>
      <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
      <remarks>The shares filed today will be sold by the Gregory Gerald Yorston Trust UAD 01/28/2017, Gregory Gerald Yorston as Trustee</remarks>
      <noticeSignature>
        <noticeDate>12/28/2023</noticeDate>
        <signature>/s/ J.P. Morgan Securities LLC as agent and attorney-in-fact for Gregory Gerald Yorston</signature>
      </noticeSignature>
    </formData>
  </edgarSubmission>
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text: 144
  0002006102
  XXXXXXXX
  LIVE
  0001780232
  GFL Environmental Inc.
  001-39240
  100 New Park Place, Suite 500
  Vaughan, Ontario
  Z4
  L4K 0H9
  905-326-0101
  Gregory Gerald Yorston
  Affiliate
  Subordinate Voting Shares
  J.P. Morgan Securities LLC
  390 Madison Avenue - 6th Floor
  New York
  NY
  10017
  66410
  2296457.8
  357342405
  12/28/2023
  NYSE
  Subordinate Voting Shares
  09/01/2023
  Vested Restricted Stock Units
  Issuer
  N
  42708
  09/01/2023
  Compensation for Services Rendered
  Subordinate Voting Shares
  09/04/2020
  Vested Restricted Stock Units
  Issuer
  N
  23702
  09/04/2020
  Compensation for Services Rendered
  Y
  The shares filed today will be sold by the Gregory Gerald Yorston Trust UAD 01/28/2017, Gregory Gerald Yorston as Trustee
  12/28/2023
  /s/ J.P. Morgan Securities LLC as agent and attorney-in-fact for Gregory Gerald Yorston