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      <liveTestFlag>LIVE</liveTestFlag>
      <filer>
        <credentials>
          <cik>0001710065</cik>
          <ccc>XXXXXXXX</ccc>
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      <periodOfReport>09-30-2022</periodOfReport>
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      <reportCalendarOrQuarter>09-30-2022</reportCalendarOrQuarter>
      <isAmendment>true</isAmendment>
      <amendmentNo>1</amendmentNo>
      <amendmentInfo>
        <amendmentType>RESTATEMENT</amendmentType>
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      <filingManager>
        <name>AJU IB Investment Co., Ltd.</name>
        <address>
          <com:street1>5F, AJU BUILDING</com:street1>
          <com:street2>201 TEHERAN-RO, GANGNAM-GU</com:street2>
          <com:city>SEOUL</com:city>
          <com:stateOrCountry>M5</com:stateOrCountry>
          <com:zipCode>06141</com:zipCode>
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      </filingManager>
      <reportType>13F HOLDINGS REPORT</reportType>
      <form13FFileNumber>028-21185</form13FFileNumber>
      <provideInfoForInstruction5>N</provideInfoForInstruction5>
    </coverPage>
    <signatureBlock>
      <name>Jiyong Choe</name>
      <title>Compliance Team Manager</title>
      <phone>82234519227</phone>
      <signature>/s/ Jiyong Choe</signature>
      <city>Seoul</city>
      <stateOrCountry>M5</stateOrCountry>
      <signatureDate>11-03-2022</signatureDate>
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