<?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/ownership" xmlns:com="http://www.sec.gov/edgar/common">
  <headerData>
    <submissionType>144</submissionType>
    <filerInfo>
      <filer>
        <filerCredentials>
          <cik>0001213244</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>


    </filerInfo>
  </headerData>
  <formData>
    <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>7308</noOfUnitsSold>
      <aggregateMarketValue>453096.00</aggregateMarketValue>
      <noOfUnitsOutstanding>3833823</noOfUnitsOutstanding>
      <approxSaleDate>08/17/2026</approxSaleDate>
      <securitiesExchangeName>AMEX</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>08/14/2026</acquiredDate>
      <natureOfAcquisitionTransaction>Stock Award</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>7308</amountOfSecuritiesAcquired>
      <paymentDate>08/14/2026</paymentDate>
      <natureOfPayment>Compensation</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Brian Olschan</name>
        <address>
          <com:street1>36 Woodlawn Ave</com:street1>
          <com:city>Madison</com:city>
          <com:stateOrCountry>CT</com:stateOrCountry>
          <com:zipCode>06443</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <saleDate>05/27/2026</saleDate>
      <amountOfSecuritiesSold>1578</amountOfSecuritiesSold>
      <grossProceeds>66242.00</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Brian Olschan</name>
        <address>
          <com:street1>36 Woodlawn Ave,</com:street1>
          <com:city>Madison</com:city>
          <com:stateOrCountry>CT</com:stateOrCountry>
          <com:zipCode>06443</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <saleDate>05/28/2026</saleDate>
      <amountOfSecuritiesSold>3255</amountOfSecuritiesSold>
      <grossProceeds>136707.51</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Brian Olschan</name>
        <address>
          <com:street1>36 Woodlawn Ave,,</com:street1>
          <com:city>Madison</com:city>
          <com:stateOrCountry>CT</com:stateOrCountry>
          <com:zipCode>06443</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <saleDate>08/03/2026</saleDate>
      <amountOfSecuritiesSold>1</amountOfSecuritiesSold>
      <grossProceeds>58.00</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Brian Olschan</name>
        <address>
          <com:street1>36 Woodlawn Ave,</com:street1>
          <com:city>Madison</com:city>
          <com:stateOrCountry>CT</com:stateOrCountry>
          <com:zipCode>06443</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <saleDate>08/04/2026</saleDate>
      <amountOfSecuritiesSold>981</amountOfSecuritiesSold>
      <grossProceeds>55671.75</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Brian Olschan</name>
        <address>
          <com:street1>36 Woodlawn Ave,</com:street1>
          <com:city>Madison</com:city>
          <com:stateOrCountry>CT</com:stateOrCountry>
          <com:zipCode>06443</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <saleDate>08/05/2026</saleDate>
      <amountOfSecuritiesSold>4000</amountOfSecuritiesSold>
      <grossProceeds>222040.00</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Brian Olschan</name>
        <address>
          <com:street1>36 Woodlawn Ave,</com:street1>
          <com:city>Madison</com:city>
          <com:stateOrCountry>CT</com:stateOrCountry>
          <com:zipCode>06443</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <saleDate>08/07/2026</saleDate>
      <amountOfSecuritiesSold>125</amountOfSecuritiesSold>
      <grossProceeds>6965.00</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Brian Olschan</name>
        <address>
          <com:street1>36 Woodlawn Ave,</com:street1>
          <com:city>Madison</com:city>
          <com:stateOrCountry>CT</com:stateOrCountry>
          <com:zipCode>06443</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <saleDate>08/10/2026</saleDate>
      <amountOfSecuritiesSold>5304</amountOfSecuritiesSold>
      <grossProceeds>302699.28</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Brian Olschan</name>
        <address>
          <com:street1>36 Woodlawn Ave,</com:street1>
          <com:city>Madison</com:city>
          <com:stateOrCountry>CT</com:stateOrCountry>
          <com:zipCode>06443</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <saleDate>08/11/2026</saleDate>
      <amountOfSecuritiesSold>159</amountOfSecuritiesSold>
      <grossProceeds>9220.41</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Brian Olschan</name>
        <address>
          <com:street1>36 Woodlawn Ave,</com:street1>
          <com:city>Madison</com:city>
          <com:stateOrCountry>CT</com:stateOrCountry>
          <com:zipCode>06443</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <saleDate>08/12/2026</saleDate>
      <amountOfSecuritiesSold>339</amountOfSecuritiesSold>
      <grossProceeds>19794.21</grossProceeds>
    </securitiesSoldInPast3Months>
    <noticeSignature>
      <noticeDate>08/17/2026</noticeDate>
      <signature>/s/ Cristina Garcia, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for OLSCHAN BRIAN S</signature>
    </noticeSignature>
  </formData>
</edgarSubmission>
