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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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<SEC-DOCUMENT>0000902664-10-001078.txt : 20100223
<SEC-HEADER>0000902664-10-001078.hdr.sgml : 20100223
<ACCEPTANCE-DATETIME>20100223155849
ACCESSION NUMBER:		0000902664-10-001078
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:		20100223
DATE AS OF CHANGE:		20100223
EFFECTIVENESS DATE:		20100223

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			NEWSMITH JAPAN NEW HORIZONS FUND L.P.
		CENTRAL INDEX KEY:			0001428889
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		D/A
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	021-115475
		FILM NUMBER:		10625952

	BUSINESS ADDRESS:	
		STREET 1:		C/O NEWSMITH JAPAN LONG SHORT GENERAL LT
		STREET 2:		UGLAND HOUSE, SOUTH CHURCH ST.,POBOX 309
		CITY:			GEORGE TOWN
		STATE:			E9
		ZIP:			CAYMAN
		BUSINESS PHONE:		1646 520 2900

	MAIL ADDRESS:	
		STREET 1:		C/O NEWSMITH JAPAN LONG SHORT GENERAL LT
		STREET 2:		UGLAND HOUSE, SOUTH CHURCH ST.,POBOX 309
		CITY:			GEORGE TOWN
		STATE:			E9
		ZIP:			CAYMAN

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	NEWSMITH SPHERE JAPAN LONG SHORT FUND L.P.
		DATE OF NAME CHANGE:	20100222

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	NEWSMITH SPHERE JAPAN LONG SHORT FUND LP
		DATE OF NAME CHANGE:	20080305
</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>0001428889</cik>
        <entityName>NEWSMITH JAPAN NEW HORIZONS FUND L.P.</entityName>
        <issuerAddress>
            <street1>C/O NEWSMITH JAPAN LONG SHORT GENERAL LT</street1>
            <street2>UGLAND HOUSE, SOUTH CHURCH ST.,POBOX 309</street2>
            <city>GEORGE TOWN</city>
            <stateOrCountry>E9</stateOrCountry>
            <zipCode>CAYMAN</zipCode>
        </issuerAddress>
        <issuerPhoneNumber>1646 520 2900</issuerPhoneNumber>
        <jurisdictionOfInc>DELAWARE</jurisdictionOfInc>
        <issuerPreviousNameList>
            <previousName>NewSmith Sphere Japan Long Short Fund L.P.</previousName>
        </issuerPreviousNameList>
        <edgarPreviousNameList>
            <previousName>NEWSMITH SPHERE JAPAN LONG SHORT FUND L.P.</previousName>
            <previousName>NEWSMITH SPHERE JAPAN LONG SHORT FUND LP</previousName>
        </edgarPreviousNameList>
        <entityType>Limited Partnership</entityType>
        <yearOfInc>
            <withinFiveYears>true</withinFiveYears>
            <value>2006</value>
        </yearOfInc>
    </primaryIssuer>

    <relatedPersonsList>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>NewSmith Sphere Japan Long Short General Partner Limited</firstName>
                <lastName>NewSmith Sphere Japan Long Short General Partner Limited</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>Ugland House, South Church Street</street1>
                <street2>PO Box 309GT</street2>
                <city>George Town, Grand Cayman</city>
                <stateOrCountry>E9</stateOrCountry>
                <zipCode>KY1-1102</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>General Partner</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Christopher</firstName>
                <middleName>V.</middleName>
                <lastName>Greetham</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>Ugland House, South Church Street</street1>
                <street2>PO Box 309GT</street2>
                <city>George Town, Grand Cayman</city>
                <stateOrCountry>E9</stateOrCountry>
                <zipCode>KY1-1102</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Member of the General Partner</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>John</firstName>
                <middleName>G.</middleName>
                <lastName>Heimann</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>Ugland House, South Church Street</street1>
                <street2>PO Box 309GT</street2>
                <city>George Town, Grand Cayman</city>
                <stateOrCountry>E9</stateOrCountry>
                <zipCode>KY1-1102</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Member of the General Partner</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Dominic</firstName>
                <middleName>C.</middleName>
                <lastName>La Valla</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>Ugland House, South Church Street</street1>
                <street2>PO Box 309GT</street2>
                <city>George Town, Grand Cayman</city>
                <stateOrCountry>E9</stateOrCountry>
                <zipCode>KY1-1102</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Member of the General Partner</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Clifford</firstName>
                <middleName>J.</middleName>
                <lastName>Shaw</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>Ugland House, South Church Street</street1>
                <street2>PO Box 309GT</street2>
                <city>George Town, Grand Cayman</city>
                <stateOrCountry>E9</stateOrCountry>
                <zipCode>KY1-1102</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Member of the General Partner</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Stephen</firstName>
                <middleName>A.</middleName>
                <lastName>Zimmerman</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>Ugland House, South Church Street</street1>
                <street2>PO Box 309GT</street2>
                <city>George Town, Grand Cayman</city>
                <stateOrCountry>E9</stateOrCountry>
                <zipCode>KY1-1102</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Member of the General Partner</relationshipClarification>
        </relatedPersonInfo>
    </relatedPersonsList>

    <offeringData>
        <industryGroup>
            <industryGroupType>Pooled Investment Fund</industryGroupType>
            <investmentFundInfo>
                <investmentFundType>Hedge Fund</investmentFundType>
                <is40Act>false</is40Act>
            </investmentFundInfo>
        </industryGroup>
        <issuerSize>
            <aggregateNetAssetValueRange>Decline to Disclose</aggregateNetAssetValueRange>
        </issuerSize>
        <federalExemptionsExclusions>
            <item>06</item>
            <item>3C</item>
            <item>3C.7</item>
        </federalExemptionsExclusions>
        <typeOfFiling>
            <newOrAmendment>
                <isAmendment>true</isAmendment>
                <previousAccessionNumber>9999999997-09-009994</previousAccessionNumber>
            </newOrAmendment>
            <dateOfFirstSale>
                <value>2008-02-01</value>
            </dateOfFirstSale>
        </typeOfFiling>
        <durationOfOffering>
            <moreThanOneYear>true</moreThanOneYear>
        </durationOfOffering>
        <typesOfSecuritiesOffered>
            <isPooledInvestmentFundType>true</isPooledInvestmentFundType>
        </typesOfSecuritiesOffered>
        <businessCombinationTransaction>
            <isBusinessCombinationTransaction>false</isBusinessCombinationTransaction>
        </businessCombinationTransaction>
        <minimumInvestmentAccepted>0</minimumInvestmentAccepted>
        <salesCompensationList></salesCompensationList>
        <offeringSalesAmounts>
            <totalOfferingAmount>Indefinite</totalOfferingAmount>
            <totalAmountSold>1000000</totalAmountSold>
            <totalRemaining>Indefinite</totalRemaining>
        </offeringSalesAmounts>
        <investors>
            <hasNonAccreditedInvestors>false</hasNonAccreditedInvestors>
            <totalNumberAlreadyInvested>1</totalNumberAlreadyInvested>
        </investors>
        <salesCommissionsFindersFees>
            <salesCommissions>
                <dollarAmount>0</dollarAmount>
            </salesCommissions>
            <findersFees>
                <dollarAmount>0</dollarAmount>
            </findersFees>
        </salesCommissionsFindersFees>
        <useOfProceeds>
            <grossProceedsUsed>
                <dollarAmount>0</dollarAmount>
            </grossProceedsUsed>
            <clarificationOfResponse>The fund charges a management fee that is described in the fund's offering documents.</clarificationOfResponse>
        </useOfProceeds>
        <signatureBlock>
            <authorizedRepresentative>false</authorizedRepresentative>
            <signature>
                <issuerName>NEWSMITH JAPAN NEW HORIZONS FUND L.P.</issuerName>
                <signatureName>/s/  Ronald J. Carlson</signatureName>
                <nameOfSigner>Ronald J. Carlson</nameOfSigner>
                <signatureTitle>Director of the General Partner</signatureTitle>
                <signatureDate>2010-02-22</signatureDate>
            </signature>
        </signatureBlock>
    </offeringData>
</edgarSubmission>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----