<?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>0001270606</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>



    </filerInfo>
  </headerData>
  <formData>
    <issuerInfo>
      <issuerCik>0001370450</issuerCik>
      <issuerName>Willdan Group, Inc.</issuerName>
      <secFileNumber>001-33076</secFileNumber>
      <issuerAddress>
        <com:street1>2401 EAST KATELLA AVENUE, SUITE 300</com:street1>
        <com:city>ANAHEIM</com:city>
        <com:stateOrCountry>CA</com:stateOrCountry>
        <com:zipCode>92806</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>800-424-9144</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>BIEBER MICHAEL A</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Officer</relationshipToIssuer>
      </relationshipsToIssuer>
    </issuerInfo>
    <securitiesInformation>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>Morgan Stanley Smith Barney LLC Executive Services</name>
        <address>
          <com:street1>200 W Civic Center Dr - 4th Floor</com:street1>
          <com:city>Sandy</com:city>
          <com:stateOrCountry>UT</com:stateOrCountry>
          <com:zipCode>84070</com:zipCode>
        </address>
      </brokerOrMarketmakerDetails>
      <noOfUnitsSold>12000</noOfUnitsSold>
      <aggregateMarketValue>437400.00</aggregateMarketValue>
      <noOfUnitsOutstanding>14000000</noOfUnitsOutstanding>
      <approxSaleDate>08/06/2024</approxSaleDate>
      <securitiesExchangeName>NASDAQ</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>COMMON</securitiesClassTitle>
      <acquiredDate>08/06/2024</acquiredDate>
      <natureOfAcquisitionTransaction>STOCK OPTION EXERCISE</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>ISSUER</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>12000</amountOfSecuritiesAcquired>
      <paymentDate>08/06/2024</paymentDate>
      <natureOfPayment>COMPENSATION</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>MICHAEL BIEBER</name>
        <address>
          <com:street1>2401 EAST KATELLA AVENUE, SUITE 300</com:street1>
          <com:city>ANAHEIM,</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>92806</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>STOCK OPTION EXERCISE</securitiesClassTitle>
      <saleDate>06/13/2024</saleDate>
      <amountOfSecuritiesSold>4460</amountOfSecuritiesSold>
      <grossProceeds>135235.89</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>MICHAEL BIEBER</name>
        <address>
          <com:street1>2401 EAST KATELLA AVENUE, SUITE 300,</com:street1>
          <com:city>ANAHEIM</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>92806</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>STOCK OPTION EXERCISE</securitiesClassTitle>
      <saleDate>06/12/2024</saleDate>
      <amountOfSecuritiesSold>4394</amountOfSecuritiesSold>
      <grossProceeds>136110.19</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>MICHAEL BIEBER</name>
        <address>
          <com:street1>2401 EAST KATELLA AVENUE, SUITE 300,,</com:street1>
          <com:city>ANAHEIM</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>92806</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>STOCK OPTION EXERCISE</securitiesClassTitle>
      <saleDate>06/11/2024</saleDate>
      <amountOfSecuritiesSold>4464</amountOfSecuritiesSold>
      <grossProceeds>135044.04</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>MICHAEL BIEBER</name>
        <address>
          <com:street1>2401 EAST KATELLA AVENUE, SUITE 300</com:street1>
          <com:city>ANAHEIM</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>92806</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>STOCK OPTION EXERCISE</securitiesClassTitle>
      <saleDate>06/10/2024</saleDate>
      <amountOfSecuritiesSold>3333</amountOfSecuritiesSold>
      <grossProceeds>103438.21</grossProceeds>
    </securitiesSoldInPast3Months>
    <noticeSignature>
      <noticeDate>08/07/2024</noticeDate>
      <signature>/s/ Michael A Bieber</signature>
    </noticeSignature>
  </formData>
</edgarSubmission>
