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<edgarSubmission xmlns="http://www.sec.gov/edgar/thirteenffiler" xmlns:com="http://www.sec.gov/edgar/common">
  <headerData>
    <submissionType>13F-HR</submissionType>
    <filerInfo>
      <liveTestFlag>LIVE</liveTestFlag>
      <flags>
        <confirmingCopyFlag>false</confirmingCopyFlag>
        <returnCopyFlag>true</returnCopyFlag>
        <overrideInternetFlag>false</overrideInternetFlag>
      </flags>
      <filer>
        <credentials>
          <cik>0001541536</cik>
          <ccc>XXXXXXXX</ccc>
        </credentials>
      </filer>
      <periodOfReport>12-31-2021</periodOfReport>
    </filerInfo>
  </headerData>
  <formData>
    <coverPage>
      <reportCalendarOrQuarter>12-31-2021</reportCalendarOrQuarter>
      <filingManager>
        <name>Minerva Advisors LLC</name>
        <address>
          <com:street1>50 MONUMENT ROAD</com:street1>
          <com:street2>SUITE 201</com:street2>
          <com:city>BALA CYNWYD</com:city>
          <com:stateOrCountry>PA</com:stateOrCountry>
          <com:zipCode>19004</com:zipCode>
        </address>
      </filingManager>
      <reportType>13F HOLDINGS REPORT</reportType>
      <form13FFileNumber>028-14665</form13FFileNumber>
      <provideInfoForInstruction5>Y</provideInfoForInstruction5>
      <additionalInformation>In the Information Table, shares reported as "SOLE" under Column 6 and Column 8 are held by Minerva Group, LP, a private fund managed by Minerva Advisors LLC. Shares reported as "OTR" under Column 6 and "SHARED" under Column 8 relate to managed accounts for which Minerva Advisors LLC is the investment advisor.</additionalInformation>
    </coverPage>
    <signatureBlock>
      <name>Beth N. Lowson</name>
      <title>Attorney-In-Fact for David P. Cohen, President of Minerva</title>
      <phone>212-335-2090</phone>
      <signature>Beth N. Lowson</signature>
      <city>New York</city>
      <stateOrCountry>NY</stateOrCountry>
      <signatureDate>02-14-2022</signatureDate>
    </signatureBlock>
    <summaryPage>
      <otherIncludedManagersCount>0</otherIncludedManagersCount>
      <tableEntryTotal>133</tableEntryTotal>
      <tableValueTotal>166310</tableValueTotal>
      <isConfidentialOmitted>false</isConfidentialOmitted>
    </summaryPage>
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