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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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 5BGatHmI12wrQpWsBKvrRQ==

<SEC-DOCUMENT>0001053497-10-000001.txt : 20100316
<SEC-HEADER>0001053497-10-000001.hdr.sgml : 20100316
<ACCEPTANCE-DATETIME>20100316120244
ACCESSION NUMBER:		0001053497-10-000001
CONFORMED SUBMISSION TYPE:	D/A
PUBLIC DOCUMENT COUNT:		1
ITEM INFORMATION:		Rule 506
ITEM INFORMATION:		Investment Company Act Section 3(c)
ITEM INFORMATION:		Section 3(c)(7)
FILED AS OF DATE:		20100316
DATE AS OF CHANGE:		20100316
EFFECTIVENESS DATE:		20100316

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			PECONIC TRIUMPH FUND II L.P.
		CENTRAL INDEX KEY:			0001053497
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			NY
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		D/A
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	021-129484
		FILM NUMBER:		10684386

	BUSINESS ADDRESS:	
		STREET 1:		506 MONTAUK HIGHWAY, P.O. BOX 3002
		CITY:			EAST QUOGUE
		STATE:			NY
		ZIP:			11942
		BUSINESS PHONE:		212-904-0445

	MAIL ADDRESS:	
		STREET 1:		506 MONTAUK HIGHWAY, P.O. BOX 3002
		CITY:			EAST QUOGUE
		STATE:			NY
		ZIP:			11942

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	TRIUMPH FUND II L P
		DATE OF NAME CHANGE:	19980122
</SEC-HEADER>
<DOCUMENT>
<TYPE>D/A
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<edgarSubmission>

    <schemaVersion>X0603</schemaVersion>

    <submissionType>D/A</submissionType>

    <testOrLive>LIVE</testOrLive>

    <primaryIssuer>
        <cik>0001053497</cik>
        <entityName>PECONIC TRIUMPH FUND II L.P.</entityName>
        <issuerAddress>
            <street1>506 MONTAUK HIGHWAY</street1>
            <street2>BOX 3002</street2>
            <city>EAST QUOGUE</city>
            <stateOrCountry>NY</stateOrCountry>
            <zipCode>11942</zipCode>
        </issuerAddress>
        <issuerPhoneNumber>212-904-0445</issuerPhoneNumber>
        <jurisdictionOfInc>NEW YORK</jurisdictionOfInc>
        <edgarPreviousNameList>
            <previousName>TRIUMPH FUND II L P</previousName>
        </edgarPreviousNameList>
        <entityType>Limited Partnership</entityType>
        <yearOfInc>
            <overFiveYears>true</overFiveYears>
        </yearOfInc>
    </primaryIssuer>

    <relatedPersonsList>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>William</firstName>
                <middleName>F.</middleName>
                <lastName>Harnisch</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>506 Montauk Highway</street1>
                <street2>Box 3002</street2>
                <city>East Quogue</city>
                <stateOrCountry>NY</stateOrCountry>
                <zipCode>11942</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Wook</firstName>
                <lastName>Lee</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>506 Montauk Highway</street1>
                <street2>Box 3002</street2>
                <city>East Quogue</city>
                <stateOrCountry>NY</stateOrCountry>
                <zipCode>11942</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
    </relatedPersonsList>

    <offeringData>
        <industryGroup>
            <industryGroupType>Pooled Investment Fund</industryGroupType>
            <investmentFundInfo>
                <investmentFundType>Hedge Fund</investmentFundType>
                <is40Act>false</is40Act>
            </investmentFundInfo>
        </industryGroup>
        <issuerSize>
            <aggregateNetAssetValueRange>$50,000,001 - $100,000,000</aggregateNetAssetValueRange>
        </issuerSize>
        <federalExemptionsExclusions>
            <item>06</item>
            <item>3C</item>
            <item>3C.7</item>
        </federalExemptionsExclusions>
        <typeOfFiling>
            <newOrAmendment>
                <isAmendment>true</isAmendment>
                <previousAccessionNumber>0001053497-09-000004</previousAccessionNumber>
            </newOrAmendment>
            <dateOfFirstSale>
                <value>1998-01-01</value>
            </dateOfFirstSale>
        </typeOfFiling>
        <durationOfOffering>
            <moreThanOneYear>true</moreThanOneYear>
        </durationOfOffering>
        <typesOfSecuritiesOffered>
            <isPooledInvestmentFundType>true</isPooledInvestmentFundType>
        </typesOfSecuritiesOffered>
        <businessCombinationTransaction>
            <isBusinessCombinationTransaction>false</isBusinessCombinationTransaction>
            <clarificationOfResponse></clarificationOfResponse>
        </businessCombinationTransaction>
        <minimumInvestmentAccepted>100000</minimumInvestmentAccepted>
        <salesCompensationList>
            <recipient>
                <recipientName>Harold K. Cohen</recipientName>
                <recipientCRDNumber>49888</recipientCRDNumber>
                <associatedBDName>HKC Securities, Inc.</associatedBDName>
                <associatedBDCRDNumber>29705</associatedBDCRDNumber>
                <recipientAddress>
                    <street1>230 Park Ave.</street1>
                    <city>New York</city>
                    <stateOrCountry>NY</stateOrCountry>
                    <zipCode>10169</zipCode>
                </recipientAddress>
                <statesOfSolicitationList>
                    <value>All States</value>
                </statesOfSolicitationList>
            </recipient>
        </salesCompensationList>
        <offeringSalesAmounts>
            <totalOfferingAmount>Indefinite</totalOfferingAmount>
            <totalAmountSold>60593000</totalAmountSold>
            <totalRemaining>Indefinite</totalRemaining>
            <clarificationOfResponse>The dollar amount disclosed above represents the Issuer's approximate net asset value as of January 31, 2010.  The number of investors disclosed below in Item 14 represents the historic total number of purchasers in the Issuer to date.</clarificationOfResponse>
        </offeringSalesAmounts>
        <investors>
            <hasNonAccreditedInvestors>true</hasNonAccreditedInvestors>
            <numberNonAccreditedInvestors>0</numberNonAccreditedInvestors>
            <totalNumberAlreadyInvested>109</totalNumberAlreadyInvested>
        </investors>
        <salesCommissionsFindersFees>
            <salesCommissions>
                <dollarAmount>102960</dollarAmount>
            </salesCommissions>
            <findersFees>
                <dollarAmount>0</dollarAmount>
            </findersFees>
            <clarificationOfResponse>The dollar amount disclosed above represents the approximate sales commission since inception.  This commission was paid outside the Issuer by the Investment Advisor.</clarificationOfResponse>
        </salesCommissionsFindersFees>
        <useOfProceeds>
            <grossProceedsUsed>
                <dollarAmount>7739461</dollarAmount>
                <isEstimate>true</isEstimate>
            </grossProceedsUsed>
            <clarificationOfResponse></clarificationOfResponse>
        </useOfProceeds>
        <signatureBlock>
            <authorizedRepresentative>false</authorizedRepresentative>
            <signature>
                <issuerName>PECONIC TRIUMPH FUND II L.P.</issuerName>
                <signatureName>Wook Lee</signatureName>
                <nameOfSigner>Wook Lee</nameOfSigner>
                <signatureTitle>Chief Compliance Officer, Chief Operating Officer and CTO</signatureTitle>
                <signatureDate>2010-03-16</signatureDate>
            </signature>
        </signatureBlock>
    </offeringData>
</edgarSubmission>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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