-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
 B/UHPcosELTQVzkLF70zG6hyHR6ipzzM+HOpWiP/IFQdoz91VAehbQQuDATnpmOZ
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<SEC-DOCUMENT>0001214305-06-000025.txt : 20060531
<SEC-HEADER>0001214305-06-000025.hdr.sgml : 20060531
<ACCEPTANCE-DATETIME>20060531194736
ACCESSION NUMBER:		0001214305-06-000025
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20060530
FILED AS OF DATE:		20060531
DATE AS OF CHANGE:		20060531

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			PORTSMOUTH SQUARE INC
		CENTRAL INDEX KEY:			0000079661
		STANDARD INDUSTRIAL CLASSIFICATION:	LAND SUBDIVIDERS & DEVELOPERS (NO CEMETERIES) [6552]
		IRS NUMBER:				941674111
		STATE OF INCORPORATION:			CA
		FISCAL YEAR END:			0630

	BUSINESS ADDRESS:	
		STREET 1:		820 MORAGA DRIVE
		STREET 2:		N/A
		CITY:			LOS ANGELES
		STATE:			CA
		ZIP:			90049
		BUSINESS PHONE:		(310) 889-2500

	MAIL ADDRESS:	
		STREET 1:		820 MORAGA DRIVE
		STREET 2:		N/A
		CITY:			LOS ANGELES
		STATE:			CA
		ZIP:			90049

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			INTERGROUP CORP
		CENTRAL INDEX KEY:			0000069422
		STANDARD INDUSTRIAL CLASSIFICATION:	OPERATORS OF APARTMENT BUILDINGS [6513]
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0630

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-04057
		FILM NUMBER:		06878226

	BUSINESS ADDRESS:	
		STREET 1:		820 MORAGA DRIVE
		STREET 2:		-
		CITY:			LOS ANGELES,
		STATE:			CA
		ZIP:			90049-1632
		BUSINESS PHONE:		(310) 889-2500

	MAIL ADDRESS:	
		STREET 1:		820 MORAGA DRIVE
		CITY:			LOS ANGELES
		STATE:			CA
		ZIP:			90049-1632

	FORMER NAME:	
		FORMER CONFORMED NAME:	MUTUAL REAL ESTATE INVESTMENT TRUST
		DATE OF NAME CHANGE:	19860408

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			SANTA FE FINANCIAL CORP
		CENTRAL INDEX KEY:			0000086759
		STANDARD INDUSTRIAL CLASSIFICATION:	REAL ESTATE [6500]
		STATE OF INCORPORATION:			NV
		FISCAL YEAR END:			0630

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-04057
		FILM NUMBER:		06878227

	BUSINESS ADDRESS:	
		STREET 1:		820 MORAGA DRIVE
		CITY:			LOS ANGELES
		STATE:			CA
		ZIP:			90049
		BUSINESS PHONE:		(310) 889-2500

	MAIL ADDRESS:	
		STREET 1:		820 MORAGA DRIVE
		CITY:			LOS ANGELES
		STATE:			CA
		ZIP:			90049
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2006-05-30</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000079661</issuerCik>
        <issuerName>PORTSMOUTH SQUARE INC</issuerName>
        <issuerTradingSymbol>PRSI</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000086759</rptOwnerCik>
            <rptOwnerName>SANTA FE FINANCIAL CORP</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>820 MORAGA DRIVE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>LOS ANGELES</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>90049</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000069422</rptOwnerCik>
            <rptOwnerName>INTERGROUP CORP</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>820 MORAGA DRIVE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>LOS ANGELES</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>90049-1632</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2006-05-30</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>5200</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>34.25</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>578437</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Purchased by Santa Fe Financial Corporation's parent company The InterGroup Corporation.</footnote>
        <footnote id="F2">505,437 shares are owned by Santa Fe Financial Corporation and 73,000 shares are owned by Santa Fe's parent company, The InterGroup Corporation.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Santa Fe Financial Corporation by /s/ Michael G. Zybala, Vice President and Secretary</signatureName>
        <signatureDate>2006-05-31</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>The InterGroup Corporation by /s/ Michael G. Zybala, Asst. Secretary and Counsel</signatureName>
        <signatureDate>2006-05-31</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----