content: <?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/ownership" xmlns:com="http://www.sec.gov/edgar/common">
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      <submissionType>144</submissionType>
      <filerInfo>
        <filer>
          <filerCredentials>
            <cik>0001213244</cik>
            <ccc>XXXXXXXX</ccc>
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        </filer>
        <liveTestFlag>LIVE</liveTestFlag>
  
  
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    </headerData>
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      <issuerInfo>
        <issuerCik>0000002098</issuerCik>
        <issuerName>ACME UNITED CORP</issuerName>
        <secFileNumber>001-07698</secFileNumber>
        <issuerAddress>
          <com:street1>1 WATERVIEW DRIVE</com:street1>
          <com:city>SHELTON</com:city>
          <com:stateOrCountry>CT</com:stateOrCountry>
          <com:zipCode>06484</com:zipCode>
        </issuerAddress>
        <issuerContactPhone>203-254-6060</issuerContactPhone>
        <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>OLSCHAN BRIAN S</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
        <relationshipsToIssuer>
          <relationshipToIssuer>Officer</relationshipToIssuer>
        </relationshipsToIssuer>
      </issuerInfo>
      <securitiesInformation>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <brokerOrMarketmakerDetails>
          <name>Fidelity Brokerage Services LLC</name>
          <address>
            <com:street1>245 Summer Street</com:street1>
            <com:city>Boston</com:city>
            <com:stateOrCountry>MA</com:stateOrCountry>
            <com:zipCode>02110</com:zipCode>
          </address>
        </brokerOrMarketmakerDetails>
        <noOfUnitsSold>3149</noOfUnitsSold>
        <aggregateMarketValue>123692.00</aggregateMarketValue>
        <noOfUnitsOutstanding>3645200</noOfUnitsOutstanding>
        <approxSaleDate>07/26/2024</approxSaleDate>
        <securitiesExchangeName>AMEX</securitiesExchangeName>
      </securitiesInformation>
      <securitiesToBeSold>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <acquiredDate>07/22/2024</acquiredDate>
        <natureOfAcquisitionTransaction>Stock Award</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>3149</amountOfSecuritiesAcquired>
        <paymentDate>07/22/2024</paymentDate>
        <natureOfPayment>Compensation</natureOfPayment>
      </securitiesToBeSold>
      <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name>Brian Olschan</name>
          <address>
            <com:street1>1 Waterview Drive</com:street1>
            <com:city>Shelton</com:city>
            <com:stateOrCountry>CT</com:stateOrCountry>
            <com:zipCode>06484</com:zipCode>
          </address>
        </sellerDetails>
        <securitiesClassTitle>Acme United Corp</securitiesClassTitle>
        <saleDate>05/24/2024</saleDate>
        <amountOfSecuritiesSold>186</amountOfSecuritiesSold>
        <grossProceeds>7407.00</grossProceeds>
      </securitiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name>Brian Olschan</name>
          <address>
            <com:street1>1 Waterview Drive</com:street1>
            <com:city>Shelton</com:city>
            <com:stateOrCountry>CT</com:stateOrCountry>
            <com:zipCode>06484</com:zipCode>
          </address>
        </sellerDetails>
        <securitiesClassTitle>Acme United Corp</securitiesClassTitle>
        <saleDate>05/21/2024</saleDate>
        <amountOfSecuritiesSold>1219</amountOfSecuritiesSold>
        <grossProceeds>49091.46</grossProceeds>
      </securitiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name>Brian Olschan</name>
          <address>
            <com:street1>1 Waterview Drive</com:street1>
            <com:city>Shelton</com:city>
            <com:stateOrCountry>CT</com:stateOrCountry>
            <com:zipCode>06484</com:zipCode>
          </address>
        </sellerDetails>
        <securitiesClassTitle>Acme United Corp</securitiesClassTitle>
        <saleDate>05/20/2024</saleDate>
        <amountOfSecuritiesSold>3086</amountOfSecuritiesSold>
        <grossProceeds>124390.76</grossProceeds>
      </securitiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name> Brian Olschan</name>
          <address>
            <com:street1>1 Waterview Drive</com:street1>
            <com:city>Shelton</com:city>
            <com:stateOrCountry>CT</com:stateOrCountry>
            <com:zipCode>06484</com:zipCode>
          </address>
        </sellerDetails>
        <securitiesClassTitle>Acme United Corp</securitiesClassTitle>
        <saleDate>05/16/2024</saleDate>
        <amountOfSecuritiesSold>2</amountOfSecuritiesSold>
        <grossProceeds>47.55</grossProceeds>
      </securitiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name>Brian Olschan</name>
          <address>
            <com:street1>1 Waterview Drive</com:street1>
            <com:city>Shelton</com:city>
            <com:stateOrCountry>CT</com:stateOrCountry>
            <com:zipCode>06484</com:zipCode>
          </address>
        </sellerDetails>
        <securitiesClassTitle>Acme United Corp</securitiesClassTitle>
        <saleDate>05/15/2024</saleDate>
        <amountOfSecuritiesSold>1517</amountOfSecuritiesSold>
        <grossProceeds>61025.82</grossProceeds>
      </securitiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name> Brian Olschan</name>
          <address>
            <com:street1>1 Waterview Drive</com:street1>
            <com:city>Shelton</com:city>
            <com:stateOrCountry>CT</com:stateOrCountry>
            <com:zipCode>06484</com:zipCode>
          </address>
        </sellerDetails>
        <securitiesClassTitle>Acme United Corp</securitiesClassTitle>
        <saleDate>05/14/2024</saleDate>
        <amountOfSecuritiesSold>7800</amountOfSecuritiesSold>
        <grossProceeds>314472.52</grossProceeds>
      </securitiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name> Brian Olschan</name>
          <address>
            <com:street1>1 Waterview Drive</com:street1>
            <com:city>Shelton</com:city>
            <com:stateOrCountry>CT</com:stateOrCountry>
            <com:zipCode>06484</com:zipCode>
          </address>
        </sellerDetails>
        <securitiesClassTitle>Acme United Corp</securitiesClassTitle>
        <saleDate>05/09/2024</saleDate>
        <amountOfSecuritiesSold>1320</amountOfSecuritiesSold>
        <grossProceeds>55511.04</grossProceeds>
      </securitiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name>Brian Olschan</name>
          <address>
            <com:street1>1 Waterview Drive</com:street1>
            <com:city>Shelton</com:city>
            <com:stateOrCountry>CT</com:stateOrCountry>
            <com:zipCode>06484</com:zipCode>
          </address>
        </sellerDetails>
        <securitiesClassTitle>Acme United Corp</securitiesClassTitle>
        <saleDate>05/08/2024</saleDate>
        <amountOfSecuritiesSold>400</amountOfSecuritiesSold>
        <grossProceeds>17215.65</grossProceeds>
      </securitiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name> Brian Olschan</name>
          <address>
            <com:street1>1 Waterview Drive</com:street1>
            <com:city>Shelton</com:city>
            <com:stateOrCountry>CT</com:stateOrCountry>
            <com:zipCode>06484</com:zipCode>
          </address>
        </sellerDetails>
        <securitiesClassTitle>Acme United Corp</securitiesClassTitle>
        <saleDate>05/07/2024</saleDate>
        <amountOfSecuritiesSold>4649</amountOfSecuritiesSold>
        <grossProceeds>202694.49</grossProceeds>
      </securitiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name> Brian Olschan</name>
          <address>
            <com:street1>1 Waterview Drive</com:street1>
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            <com:stateOrCountry>CT</com:stateOrCountry>
            <com:zipCode>06484</com:zipCode>
          </address>
        </sellerDetails>
        <securitiesClassTitle>Acme United Corp</securitiesClassTitle>
        <saleDate>05/06/2024</saleDate>
        <amountOfSecuritiesSold>5566</amountOfSecuritiesSold>
        <grossProceeds>239026.91</grossProceeds>
      </securitiesSoldInPast3Months>
      <noticeSignature>
        <noticeDate>07/26/2024</noticeDate>
        <signature>/s/ Christian Nasser as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Brian Olschan</signature>
      </noticeSignature>
    </formData>
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metadata_documents: [{"type": "144", "sequence": "1", "filename": "primary_doc.xml", "secsgml_size_bytes": 8697}]
text: 144
  0001213244
  XXXXXXXX
  LIVE
  0000002098
  ACME UNITED CORP
  001-07698
  1 WATERVIEW DRIVE
  SHELTON
  CT
  06484
  203-254-6060
  OLSCHAN BRIAN S
  Officer
  Common
  Fidelity Brokerage Services LLC
  245 Summer Street
  Boston
  MA
  02110
  3149
  123692.00
  3645200
  07/26/2024
  AMEX
  Common
  07/22/2024
  Stock Award
  Issuer
  N
  3149
  07/22/2024
  Compensation
  N
  Brian Olschan
  1 Waterview Drive
  Shelton
  CT
  06484
  Acme United Corp
  05/24/2024
  186
  7407.00
  Brian Olschan
  1 Waterview Drive
  Shelton
  CT
  06484
  Acme United Corp
  05/21/2024
  1219
  49091.46
  Brian Olschan
  1 Waterview Drive
  Shelton
  CT
  06484
  Acme United Corp
  05/20/2024
  3086
  124390.76
  Brian Olschan
  1 Waterview Drive
  Shelton
  CT
  06484
  Acme United Corp
  05/16/2024
  2
  47.55
  Brian Olschan
  1 Waterview Drive
  Shelton
  CT
  06484
  Acme United Corp
  05/15/2024
  1517
  61025.82
  Brian Olschan
  1 Waterview Drive
  Shelton
  CT
  06484
  Acme United Corp
  05/14/2024
  7800
  314472.52
  Brian Olschan
  1 Waterview Drive
  Shelton
  CT
  06484
  Acme United Corp
  05/09/2024
  1320
  55511.04
  Brian Olschan
  1 Waterview Drive
  Shelton
  CT
  06484
  Acme United Corp
  05/08/2024
  400
  17215.65
  Brian Olschan
  1 Waterview Drive
  Shelton
  CT
  06484
  Acme United Corp
  05/07/2024
  4649
  202694.49
  Brian Olschan
  1 Waterview Drive
  Shelton
  CT
  06484
  Acme United Corp
  05/06/2024
  5566
  239026.91
  07/26/2024
  /s/ Christian Nasser as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Brian Olschan