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    <submissionType>13F-HR/A</submissionType>
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        <credentials>
          <cik>0001040508</cik>
          <ccc>XXXXXXXX</ccc>
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      <periodOfReport>12-31-2015</periodOfReport>
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    <coverPage>
      <reportCalendarOrQuarter>12-31-2015</reportCalendarOrQuarter>
      <isAmendment>true</isAmendment>
      <amendmentNo>1</amendmentNo>
      <amendmentInfo>
        <amendmentType>RESTATEMENT</amendmentType>
      </amendmentInfo>
      <filingManager>
        <name>BAIN CAPITAL INVESTORS LLC</name>
        <address>
          <com:street1>JOHN HANCOCK TOWER</com:street1>
          <com:street2>200 CLARENDON STREET</com:street2>
          <com:city>BOSTON</com:city>
          <com:stateOrCountry>MA</com:stateOrCountry>
          <com:zipCode>02116</com:zipCode>
        </address>
      </filingManager>
      <reportType>13F HOLDINGS REPORT</reportType>
      <form13FFileNumber>028-11185</form13FFileNumber>
      <provideInfoForInstruction5>Y</provideInfoForInstruction5>
      <additionalInformation>This Amendment No. 1 to form 13F is being filed to replace the prior reporting of FISERV INC shares with the correct holdings of FIDELITY NATL INFORMATION SV shares. All other reported holdings remain unchanged.

Bain Capital Investors, LLC is the (i) general partner of Bain Capital Partners X, L.P., which is the general partner of Bain Capital Fund X, L.P. and the holder of all of the Class A shares of Glory Investments B Limited, (ii) general partner of Bain Capital Integral Investors 2008, L.P., (iii) general partner of Bain Capital Partners Europe III, L.P., which is the general partner of Bain Capital Europe Fund III, L.P., which is the sole shareholder of Bain Capital Everest Manager S.a.r.l., which is the general partner of Bain Capital Everest Manager Holding S.C.A., (iv) general partner of Bain Capital Partners VII, L.P., which is the general partner of Bain Capital Fund VII, L.P., (v) general partner of Bain Capital VII Coinvestment Fund, L.P., (vi) general partner of Bain Capital Partners Asia II, L.P., which holds all of the Class A shares of Glory Investments A Limited, (vii) general partner of Bain Capital Partners VIII, L.P., which is the general partner of Bain Capital Fund VIII, L.P., which is the sole member of Bain Capital Fund VIII, LLC, (viii) administrative member of Bain Capital Integral Investors 2006, LLC, and (ix) administrative member of Bain Capital Integral Investors, LLC. Bain Capital Fund VII, L.P. and Bain Capital VII Coinvestment Fund, L.P. have the right to appoint two of the three members of UWW Holdings, LLC's board of managers, which acts by majority vote. Bain Capital Europe Fund III, L.P. and Bain Capital Fund X, L.P. each beneficially own 50% of Atalaya Luxco S.a.r.l., which is the general partner of Atalaya Luxco Topco S.C.A., which wholly owns Atalaya PIKco S.a.r.l., which is the general partner of Atalaya Luxco PIKco SCA.</additionalInformation>
    </coverPage>
    <signatureBlock>
      <name>Michael D. Ward</name>
      <title>Managing Director of Bain Capital Investors, LLC</title>
      <phone>(617) 516-2000</phone>
      <signature>/s/ Michael D. Ward</signature>
      <city>Boston</city>
      <stateOrCountry>MA</stateOrCountry>
      <signatureDate>03-16-2016</signatureDate>
    </signatureBlock>
    <summaryPage>
      <otherIncludedManagersCount>23</otherIncludedManagersCount>
      <tableEntryTotal>11</tableEntryTotal>
      <tableValueTotal>7166442</tableValueTotal>
      <isConfidentialOmitted>false</isConfidentialOmitted>
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        <otherManager2>
          <sequenceNumber>1</sequenceNumber>
          <otherManager>
            <form13FFileNumber>028-15506</form13FFileNumber>
            <name>Bain Capital Partners X, L.P.</name>
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        <otherManager2>
          <sequenceNumber>2</sequenceNumber>
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            <form13FFileNumber>028-15509</form13FFileNumber>
            <name>Bain Capital Fund X, L.P.</name>
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        <otherManager2>
          <sequenceNumber>3</sequenceNumber>
          <otherManager>
            <form13FFileNumber>028-15576</form13FFileNumber>
            <name>Bain Capital Integral Investors 2008, L.P.</name>
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        </otherManager2>
        <otherManager2>
          <sequenceNumber>4</sequenceNumber>
          <otherManager>
            <form13FFileNumber>028-16250</form13FFileNumber>
            <name>Bain Capital Partners Europe III, L.P.</name>
          </otherManager>
        </otherManager2>
        <otherManager2>
          <sequenceNumber>5</sequenceNumber>
          <otherManager>
            <form13FFileNumber>028-16251</form13FFileNumber>
            <name>Bain Capital Europe Fund III, L.P.</name>
          </otherManager>
        </otherManager2>
        <otherManager2>
          <sequenceNumber>6</sequenceNumber>
          <otherManager>
            <form13FFileNumber>028-16255</form13FFileNumber>
            <name>Bain Capital Everest Manager S.a.r.l.</name>
          </otherManager>
        </otherManager2>
        <otherManager2>
          <sequenceNumber>7</sequenceNumber>
          <otherManager>
            <form13FFileNumber>028-16248</form13FFileNumber>
            <name>Bain Capital Everest Manager Holding SCA</name>
          </otherManager>
        </otherManager2>
        <otherManager2>
          <sequenceNumber>8</sequenceNumber>
          <otherManager>
            <form13FFileNumber>028-11660</form13FFileNumber>
            <name>Bain Capital Partners VII, L.P.</name>
          </otherManager>
        </otherManager2>
        <otherManager2>
          <sequenceNumber>9</sequenceNumber>
          <otherManager>
            <form13FFileNumber>028-16799</form13FFileNumber>
            <name>Bain Capital Fund VII, L.P.</name>
          </otherManager>
        </otherManager2>
        <otherManager2>
          <sequenceNumber>10</sequenceNumber>
          <otherManager>
            <form13FFileNumber>028-11661</form13FFileNumber>
            <name>Bain Capital VII Coinvestment Fund, L.P.</name>
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        </otherManager2>
        <otherManager2>
          <sequenceNumber>11</sequenceNumber>
          <otherManager>
            <form13FFileNumber>028-16331</form13FFileNumber>
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          </otherManager>
        </otherManager2>
        <otherManager2>
          <sequenceNumber>12</sequenceNumber>
          <otherManager>
            <form13FFileNumber>028-14482</form13FFileNumber>
            <name>Bain Capital Integral Investors 2006, LLC</name>
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        </otherManager2>
        <otherManager2>
          <sequenceNumber>13</sequenceNumber>
          <otherManager>
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            <name>Bain Capital Partners Asia II, L.P.</name>
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        </otherManager2>
        <otherManager2>
          <sequenceNumber>14</sequenceNumber>
          <otherManager>
            <form13FFileNumber>028-16334</form13FFileNumber>
            <name>Glory Investments A Limited</name>
          </otherManager>
        </otherManager2>
        <otherManager2>
          <sequenceNumber>15</sequenceNumber>
          <otherManager>
            <form13FFileNumber>028-16335</form13FFileNumber>
            <name>Glory Investments B Limited</name>
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        </otherManager2>
        <otherManager2>
          <sequenceNumber>16</sequenceNumber>
          <otherManager>
            <form13FFileNumber>028-16793</form13FFileNumber>
            <name>Atalaya Luxco S.a.r.l.</name>
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        <otherManager2>
          <sequenceNumber>17</sequenceNumber>
          <otherManager>
            <form13FFileNumber>028-16798</form13FFileNumber>
            <name>Atalaya Luxco Topco S.C.A.</name>
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        <otherManager2>
          <sequenceNumber>18</sequenceNumber>
          <otherManager>
            <form13FFileNumber>028-16792</form13FFileNumber>
            <name>Atalaya PIKco S.a.r.l.</name>
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        <otherManager2>
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            <form13FFileNumber>028-16750</form13FFileNumber>
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          <otherManager>
            <form13FFileNumber>028-13947</form13FFileNumber>
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            <name>Bain Capital Integral Investors, LLC</name>
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