<?xml version="1.0"?>
<edgarSubmission>

    <schemaVersion>X0708</schemaVersion>

    <submissionType>D/A</submissionType>

    <testOrLive>LIVE</testOrLive>

    <primaryIssuer>
        <cik>0001705984</cik>
        <entityName>LIME ROCK PARTNERS VIII, L.P.</entityName>
        <issuerAddress>
            <street1>C/O LIME ROCK PARTNERS GP VIII, L.P.</street1>
            <street2>274 RIVERSIDE AVENUE, 3RD FLOOR</street2>
            <city>WESTPORT</city>
            <stateOrCountry>CT</stateOrCountry>
            <stateOrCountryDescription>CONNECTICUT</stateOrCountryDescription>
            <zipCode>06880</zipCode>
        </issuerAddress>
        <issuerPhoneNumber>203-293-2750</issuerPhoneNumber>
        <jurisdictionOfInc>CAYMAN ISLANDS</jurisdictionOfInc>
        <issuerPreviousNameList>
            <value>None</value>
        </issuerPreviousNameList>
        <edgarPreviousNameList>
            <value>None</value>
        </edgarPreviousNameList>
        <entityType>Other</entityType>
        <entityTypeOtherDesc>An exempted limited partnership organized under the
laws of the Cayman Islands.</entityTypeOtherDesc>
        <yearOfInc>
            <withinFiveYears>true</withinFiveYears>
            <value>2017</value>
        </yearOfInc>
    </primaryIssuer>

    <relatedPersonsList>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>n/a</firstName>
                <lastName>Lime Rock Partners GP VIII, L.P.</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>274 Riverside Avenue</street1>
                <street2>3rd Floor</street2>
                <city>Westport</city>
                <stateOrCountry>CT</stateOrCountry>
                <stateOrCountryDescription>CONNECTICUT</stateOrCountryDescription>
                <zipCode>06880</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
                <relationship>Promoter</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>The General Partner of the Issuer.</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>n/a</firstName>
                <lastName>Lime Rock Management LP</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>274 Riverside Avenue</street1>
                <street2>3rd Floor</street2>
                <city>Westport</city>
                <stateOrCountry>CT</stateOrCountry>
                <stateOrCountryDescription>CONNECTICUT</stateOrCountryDescription>
                <zipCode>06880</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Promoter</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>The Manager of the Issuer.</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Jonathan</firstName>
                <lastName>Farber</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>274 Riverside Avenue</street1>
                <street2>3rd Floor</street2>
                <city>Westport</city>
                <stateOrCountry>CT</stateOrCountry>
                <stateOrCountryDescription>CONNECTICUT</stateOrCountryDescription>
                <zipCode>06880</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
                <relationship>Promoter</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Mr. Farber is a director of the general partner of the General Partner of the Issuer and the co-founder and managing director of the Manager of the Issuer.</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>John</firstName>
                <lastName>Reynolds</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>274 Riverside Avenue</street1>
                <street2>3rd Floor</street2>
                <city>Westport</city>
                <stateOrCountry>CT</stateOrCountry>
                <stateOrCountryDescription>CONNECTICUT</stateOrCountryDescription>
                <zipCode>06880</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
                <relationship>Promoter</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Mr. Reynolds is a director of the general partner of the General Partner of the Issuer and the co-founder and managing director of the Manager of the Issuer.</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Susan</firstName>
                <lastName>Oswald</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>274 Riverside Avenue</street1>
                <street2>3rd Floor</street2>
                <city>Westport</city>
                <stateOrCountry>CT</stateOrCountry>
                <stateOrCountryDescription>CONNECTICUT</stateOrCountryDescription>
                <zipCode>06880</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Ms. Oswald is the Chief Financial Officer, Secretary and an authorized signatory of the general partner of the General Partner of the Issuer.</relationshipClarification>
        </relatedPersonInfo>
    </relatedPersonsList>

    <offeringData>
        <industryGroup>
            <industryGroupType>Pooled Investment Fund</industryGroupType>
            <investmentFundInfo>
                <investmentFundType>Private Equity Fund</investmentFundType>
                <is40Act>false</is40Act>
            </investmentFundInfo>
        </industryGroup>
        <issuerSize>
            <revenueRange>Decline to Disclose</revenueRange>
        </issuerSize>
        <federalExemptionsExclusions>
            <item>06b</item>
            <item>3C.7</item>
        </federalExemptionsExclusions>
        <typeOfFiling>
            <newOrAmendment>
                <isAmendment>true</isAmendment>
                <previousAccessionNumber>0001140361-17-019606</previousAccessionNumber>
            </newOrAmendment>
            <dateOfFirstSale>
                <value>2017-05-15</value>
            </dateOfFirstSale>
        </typeOfFiling>
        <durationOfOffering>
            <moreThanOneYear>true</moreThanOneYear>
        </durationOfOffering>
        <typesOfSecuritiesOffered>
            <isPooledInvestmentFundType>true</isPooledInvestmentFundType>
            <isOtherType>true</isOtherType>
            <descriptionOfOtherType>Limited Partnership Interests.  The General Partner reserves the right to accept lesser amounts than the amount reflected in Item 11.</descriptionOfOtherType>
        </typesOfSecuritiesOffered>
        <businessCombinationTransaction>
            <isBusinessCombinationTransaction>false</isBusinessCombinationTransaction>
        </businessCombinationTransaction>
        <minimumInvestmentAccepted>5000000</minimumInvestmentAccepted>
        <salesCompensationList>
            <recipient>
                <recipientName>None</recipientName>
                <recipientCRDNumber>None</recipientCRDNumber>
                <associatedBDName>Eaton Partners, LLC</associatedBDName>
                <associatedBDCRDNumber>31170</associatedBDCRDNumber>
                <recipientAddress>
                    <street1>131 Rowayton Avenue</street1>
                    <city>Rowayton</city>
                    <stateOrCountry>CT</stateOrCountry>
                    <stateOrCountryDescription>CONNECTICUT</stateOrCountryDescription>
                    <zipCode>06853</zipCode>
                </recipientAddress>
                <statesOfSolicitationList>
                    <state>CA</state>
                    <description>CALIFORNIA</description>
                    <state>CT</state>
                    <description>CONNECTICUT</description>
                    <state>NJ</state>
                    <description>NEW JERSEY</description>
                    <state>NY</state>
                    <description>NEW YORK</description>
                    <state>OH</state>
                    <description>OHIO</description>
                    <state>PA</state>
                    <description>PENNSYLVANIA</description>
                </statesOfSolicitationList>
                <foreignSolicitation>true</foreignSolicitation>
            </recipient>
            <recipient>
                <recipientName>None</recipientName>
                <recipientCRDNumber>None</recipientCRDNumber>
                <associatedBDName>Evercore Group L.L.C.</associatedBDName>
                <associatedBDCRDNumber>42405</associatedBDCRDNumber>
                <recipientAddress>
                    <street1>55 East 52nd Street</street1>
                    <city>New York</city>
                    <stateOrCountry>NY</stateOrCountry>
                    <stateOrCountryDescription>NEW YORK</stateOrCountryDescription>
                    <zipCode>10055</zipCode>
                </recipientAddress>
                <statesOfSolicitationList>
                    <state>AK</state>
                    <description>ALASKA</description>
                    <state>AL</state>
                    <description>ALABAMA</description>
                    <state>AR</state>
                    <description>ARKANSAS</description>
                    <state>AZ</state>
                    <description>ARIZONA</description>
                    <state>CA</state>
                    <description>CALIFORNIA</description>
                    <state>CO</state>
                    <description>COLORADO</description>
                    <state>CT</state>
                    <description>CONNECTICUT</description>
                    <state>DC</state>
                    <description>DISTRICT OF COLUMBIA</description>
                    <state>DE</state>
                    <description>DELAWARE</description>
                    <state>FL</state>
                    <description>FLORIDA</description>
                    <state>GA</state>
                    <description>GEORGIA</description>
                    <state>HI</state>
                    <description>HAWAII</description>
                    <state>IA</state>
                    <description>IOWA</description>
                    <state>ID</state>
                    <description>IDAHO</description>
                    <state>IL</state>
                    <description>ILLINOIS</description>
                    <state>IN</state>
                    <description>INDIANA</description>
                    <state>KS</state>
                    <description>KANSAS</description>
                    <state>KY</state>
                    <description>KENTUCKY</description>
                    <state>LA</state>
                    <description>LOUISIANA</description>
                    <state>MA</state>
                    <description>MASSACHUSETTS</description>
                    <state>MD</state>
                    <description>MARYLAND</description>
                    <state>ME</state>
                    <description>MAINE</description>
                    <state>MI</state>
                    <description>MICHIGAN</description>
                    <state>MN</state>
                    <description>MINNESOTA</description>
                    <state>MO</state>
                    <description>MISSOURI</description>
                    <state>MS</state>
                    <description>MISSISSIPPI</description>
                    <state>MT</state>
                    <description>MONTANA</description>
                    <state>NC</state>
                    <description>NORTH CAROLINA</description>
                    <state>ND</state>
                    <description>NORTH DAKOTA</description>
                    <state>NE</state>
                    <description>NEBRASKA</description>
                    <state>NH</state>
                    <description>NEW HAMPSHIRE</description>
                    <state>NJ</state>
                    <description>NEW JERSEY</description>
                    <state>NM</state>
                    <description>NEW MEXICO</description>
                    <state>NV</state>
                    <description>NEVADA</description>
                    <state>NY</state>
                    <description>NEW YORK</description>
                    <state>OH</state>
                    <description>OHIO</description>
                    <state>OK</state>
                    <description>OKLAHOMA</description>
                    <state>OR</state>
                    <description>OREGON</description>
                    <state>PA</state>
                    <description>PENNSYLVANIA</description>
                    <state>PR</state>
                    <description>PUERTO RICO</description>
                    <state>RI</state>
                    <description>RHODE ISLAND</description>
                    <state>SC</state>
                    <description>SOUTH CAROLINA</description>
                    <state>SD</state>
                    <description>SOUTH DAKOTA</description>
                    <state>TX</state>
                    <description>TEXAS</description>
                    <state>UT</state>
                    <description>UTAH</description>
                    <state>VA</state>
                    <description>VIRGINIA</description>
                    <state>VT</state>
                    <description>VERMONT</description>
                    <state>WA</state>
                    <description>WASHINGTON</description>
                    <state>WI</state>
                    <description>WISCONSIN</description>
                    <state>WV</state>
                    <description>WEST VIRGINIA</description>
                    <state>WY</state>
                    <description>WYOMING</description>
                </statesOfSolicitationList>
                <foreignSolicitation>false</foreignSolicitation>
            </recipient>
        </salesCompensationList>
        <offeringSalesAmounts>
            <totalOfferingAmount>1000000000</totalOfferingAmount>
            <totalAmountSold>337840000</totalAmountSold>
            <totalRemaining>662160000</totalRemaining>
        </offeringSalesAmounts>
        <investors>
            <hasNonAccreditedInvestors>false</hasNonAccreditedInvestors>
            <totalNumberAlreadyInvested>33</totalNumberAlreadyInvested>
        </investors>
        <salesCommissionsFindersFees>
            <salesCommissions>
                <dollarAmount>0</dollarAmount>
                <isEstimate>true</isEstimate>
            </salesCommissions>
            <findersFees>
                <dollarAmount>0</dollarAmount>
            </findersFees>
            <clarificationOfResponse>The persons named in Item 12 will receive fees for the sale of the Issuer's limited partnership interests.  Such amounts cannot be estimated at this time</clarificationOfResponse>
        </salesCommissionsFindersFees>
        <useOfProceeds>
            <grossProceedsUsed>
                <dollarAmount>0</dollarAmount>
                <isEstimate>true</isEstimate>
            </grossProceedsUsed>
            <clarificationOfResponse>Certain persons named in Item 3 or affiliates thereof may receive payments deemed to be made from the proceeds of the offering, including management fees. The amount of such fees cannot be estimated at this time.</clarificationOfResponse>
        </useOfProceeds>
        <signatureBlock>
            <authorizedRepresentative>false</authorizedRepresentative>
            <signature>
                <issuerName>LIME ROCK PARTNERS VIII, L.P.</issuerName>
                <signatureName>/s/ Susan Oswald</signatureName>
                <nameOfSigner>Susan Oswald</nameOfSigner>
                <signatureTitle>Authorized Signatory of the GP of the GP of the Issuer</signatureTitle>
                <signatureDate>2017-12-11</signatureDate>
            </signature>
        </signatureBlock>
    </offeringData>
</edgarSubmission>
