-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 NLlStrCtOnLP38JbHhqzoR8VlYs/OtBI0pYjZ66TjBPLkLIMCns+USp3++2uv6M4
 QyB49Dj0PtFIZzts3Uk2bw==

<SEC-DOCUMENT>0001475858-10-000005.txt : 20101109
<SEC-HEADER>0001475858-10-000005.hdr.sgml : 20101109
<ACCEPTANCE-DATETIME>20101109125619
ACCESSION NUMBER:		0001475858-10-000005
CONFORMED SUBMISSION TYPE:	D/A
PUBLIC DOCUMENT COUNT:		1
ITEM INFORMATION:		Rule 506
FILED AS OF DATE:		20101109
DATE AS OF CHANGE:		20101109
EFFECTIVENESS DATE:		20101109

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Fidelity Institutional Liquidity Fund plc
		CENTRAL INDEX KEY:			0001475858
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			L2
		FISCAL YEAR END:			0831

	FILING VALUES:
		FORM TYPE:		D/A
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	021-135940
		FILM NUMBER:		101175349

	BUSINESS ADDRESS:	
		STREET 1:		MARCONI HOUSE, 1 DIGGES LANE
		CITY:			DUBLIN 2
		STATE:			L2
		ZIP:			NONE
		BUSINESS PHONE:		353 1 614 1204

	MAIL ADDRESS:	
		STREET 1:		MARCONI HOUSE, 1 DIGGES LANE
		CITY:			DUBLIN 2
		STATE:			L2
		ZIP:			NONE

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Fidelity Institutional Cash Fund plc
		DATE OF NAME CHANGE:	20091030
</SEC-HEADER>
<DOCUMENT>
<TYPE>D/A
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<edgarSubmission>

    <schemaVersion>X0704</schemaVersion>

    <submissionType>D/A</submissionType>

    <testOrLive>LIVE</testOrLive>

    <primaryIssuer>
        <cik>0001475858</cik>
        <entityName>Fidelity Institutional Liquidity Fund plc</entityName>
        <issuerAddress>
            <street1>MARCONI HOUSE, 1 DIGGES LANE</street1>
            <city>DUBLIN 2</city>
            <stateOrCountry>L2</stateOrCountry>
            <stateOrCountryDescription>IRELAND</stateOrCountryDescription>
            <zipCode>NONE</zipCode>
        </issuerAddress>
        <issuerPhoneNumber>353 1 614 1204</issuerPhoneNumber>
        <jurisdictionOfInc>IRELAND</jurisdictionOfInc>
        <edgarPreviousNameList>
            <previousName>Fidelity Institutional Cash Fund plc</previousName>
        </edgarPreviousNameList>
        <entityType>Other</entityType>
        <entityTypeOtherDesc>PLC formed in Ireland</entityTypeOtherDesc>
        <yearOfInc>
            <overFiveYears>true</overFiveYears>
        </yearOfInc>
    </primaryIssuer>

    <relatedPersonsList>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Jon</firstName>
                <lastName>Boyle</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>MARCONI HOUSE, 1 DIGGES LANE</street1>
                <city>DUBLIN 2</city>
                <stateOrCountry>L2</stateOrCountry>
                <stateOrCountryDescription>IRELAND</stateOrCountryDescription>
                <zipCode>00000</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>David</firstName>
                <lastName>Dillon</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>MARCONI HOUSE, 1 DIGGES LANE</street1>
                <city>DUBLIN 2</city>
                <stateOrCountry>L2</stateOrCountry>
                <stateOrCountryDescription>IRELAND</stateOrCountryDescription>
                <zipCode>00000</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Allan</firstName>
                <lastName>Pelvang</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>MARCONI HOUSE, 1 DIGGES LANE</street1>
                <city>DUBLIN 2</city>
                <stateOrCountry>L2</stateOrCountry>
                <stateOrCountryDescription>IRELAND</stateOrCountryDescription>
                <zipCode>00000</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
    </relatedPersonsList>

    <offeringData>
        <industryGroup>
            <industryGroupType>Pooled Investment Fund</industryGroupType>
            <investmentFundInfo>
                <investmentFundType>Other Investment Fund</investmentFundType>
                <is40Act>false</is40Act>
            </investmentFundInfo>
        </industryGroup>
        <issuerSize>
            <aggregateNetAssetValueRange>Over $100,000,000</aggregateNetAssetValueRange>
        </issuerSize>
        <federalExemptionsExclusions>
            <item>06</item>
        </federalExemptionsExclusions>
        <typeOfFiling>
            <newOrAmendment>
                <isAmendment>true</isAmendment>
                <previousAccessionNumber>0001475858-09-000001</previousAccessionNumber>
            </newOrAmendment>
            <dateOfFirstSale>
                <value>1997-12-24</value>
            </dateOfFirstSale>
        </typeOfFiling>
        <durationOfOffering>
            <moreThanOneYear>true</moreThanOneYear>
        </durationOfOffering>
        <typesOfSecuritiesOffered>
            <isOtherType>true</isOtherType>
            <descriptionOfOtherType>Money market fund</descriptionOfOtherType>
        </typesOfSecuritiesOffered>
        <businessCombinationTransaction>
            <isBusinessCombinationTransaction>false</isBusinessCombinationTransaction>
            <clarificationOfResponse></clarificationOfResponse>
        </businessCombinationTransaction>
        <minimumInvestmentAccepted>100000</minimumInvestmentAccepted>
        <salesCompensationList>
            <recipient>
                <recipientName>Fidelity Investments Institutional Services Company, Inc</recipientName>
                <recipientCRDNumber>17507</recipientCRDNumber>
                <associatedBDName>None</associatedBDName>
                <associatedBDCRDNumber>None</associatedBDCRDNumber>
                <recipientAddress>
                    <street1>500 Salem St OS2N1</street1>
                    <city>Smithfield</city>
                    <stateOrCountry>RI</stateOrCountry>
                    <stateOrCountryDescription>RHODE ISLAND</stateOrCountryDescription>
                    <zipCode>02917</zipCode>
                </recipientAddress>
                <statesOfSolicitationList>
                    <value>All States</value>
                </statesOfSolicitationList>
                <foreignSolicitation>false</foreignSolicitation>
            </recipient>
        </salesCompensationList>
        <offeringSalesAmounts>
            <totalOfferingAmount>Indefinite</totalOfferingAmount>
            <totalAmountSold>7681087578</totalAmountSold>
            <totalRemaining>Indefinite</totalRemaining>
            <clarificationOfResponse>The amount stated above is the net asset value of the fund as of October 29, 2010.</clarificationOfResponse>
        </offeringSalesAmounts>
        <investors>
            <hasNonAccreditedInvestors>false</hasNonAccreditedInvestors>
            <totalNumberAlreadyInvested>1943</totalNumberAlreadyInvested>
        </investors>
        <salesCommissionsFindersFees>
            <salesCommissions>
                <dollarAmount>484819</dollarAmount>
                <isEstimate>true</isEstimate>
            </salesCommissions>
            <findersFees>
                <dollarAmount>0</dollarAmount>
            </findersFees>
            <clarificationOfResponse>Above amount is derived from aggregate amount paid as of February 2010 for amounts owing as of December 31, 2009.</clarificationOfResponse>
        </salesCommissionsFindersFees>
        <useOfProceeds>
            <grossProceedsUsed>
                <dollarAmount>0</dollarAmount>
            </grossProceedsUsed>
            <clarificationOfResponse></clarificationOfResponse>
        </useOfProceeds>
        <signatureBlock>
            <authorizedRepresentative>false</authorizedRepresentative>
            <signature>
                <issuerName>Fidelity Institutional Liquidity Fund plc</issuerName>
                <signatureName>Jon Boyle</signatureName>
                <nameOfSigner>Jon Boyle</nameOfSigner>
                <signatureTitle>Director</signatureTitle>
                <signatureDate>2010-11-09</signatureDate>
            </signature>
        </signatureBlock>
    </offeringData>
</edgarSubmission>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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