-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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 JGjC3vqQV5Yoahdp7AazfQ==

<SEC-DOCUMENT>0000950172-03-002203.txt : 20030703
<SEC-HEADER>0000950172-03-002203.hdr.sgml : 20030703
<ACCEPTANCE-DATETIME>20030703141936
ACCESSION NUMBER:		0000950172-03-002203
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20030626
FILED AS OF DATE:		20030703

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			TREASURE ISLAND ROYALTY TRUST
		CENTRAL INDEX KEY:			0001175872
		STANDARD INDUSTRIAL CLASSIFICATION:	CRUDE PETROLEUM & NATURAL GAS [1311]
		IRS NUMBER:				026148888
		STATE OF INCORPORATION:			TX
		FISCAL YEAR END:			1231

	MAIL ADDRESS:	
		STREET 1:		363 N. SAM HOUSTON PARKWAY E.
		STREET 2:		SUITE 2020
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77060

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			MCKENZIE RICHARD C JR
		CENTRAL INDEX KEY:			0001004823

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	333-91014-01
		FILM NUMBER:		03774985

	BUSINESS ADDRESS:	
		STREET 1:		NONE
		STREET 2:		NONE
		CITY:			NONE
		STATE:			CA
		ZIP:			NONE
		BUSINESS PHONE:		NONE

	MAIL ADDRESS:	
		STREET 1:		16850 PARK ROW
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77084
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>

<ownershipDocument>

    <documentType>4</documentType>

    <periodOfReport>2003-06-26</periodOfReport>


    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001175872</issuerCik>
        <issuerName>TREASURE ISLAND ROYALTY TRUST</issuerName>
        <issuerTradingSymbol>TISDZ.PK</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001004823</rptOwnerCik>
            <rptOwnerName>MCKENZIE RICHARD C JR</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>  </rptOwnerStreet1>
            <rptOwnerStreet2>  </rptOwnerStreet2>
            <rptOwnerCity>  </rptOwnerCity>
            <rptOwnerState>  </rptOwnerState>
            <rptOwnerZipCode>  </rptOwnerZipCode>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeSecurity>
        <securityTitle>
            <value>Trust Units</value>
        </securityTitle>
        <transactionDate>
            <value>2003-06-26</value>
        </transactionDate>
        <transactionCoding>
            <transactionFormType>4</transactionFormType>
            <transactionCode>S</transactionCode>
            <equitySwapInvolved>0</equitySwapInvolved>
        </transactionCoding>
        <transactionTimeliness>
            <value></value>
        </transactionTimeliness>
        <transactionAmounts>
            <transactionShares>
                <value>98117</value>
            </transactionShares>
            <transactionValue>
                <value>0.26</value>
            </transactionValue>
            <transactionAcquiredDisposedCode>
                <value>D</value>
            </transactionAcquiredDisposedCode>
        </transactionAmounts>
        <postTransactionAmounts>
            <sharesOwnedFollowingTransaction>
                <value>17971644</value>
            </sharesOwnedFollowingTransaction>
        </postTransactionAmounts>
        <ownershipNature>
            <directOrIndirectOwnership>
                <value>D</value>
            </directOrIndirectOwnership>
        </ownershipNature>
    </nonDerivativeSecurity>

    <nonDerivativeSecurity>
        <securityTitle>
            <value>Trust Units</value>
        </securityTitle>
        <transactionDate>
            <value>2003-06-26</value>
        </transactionDate>
        <transactionCoding>
            <transactionFormType>4</transactionFormType>
            <transactionCode>S</transactionCode>
            <equitySwapInvolved>0</equitySwapInvolved>
        </transactionCoding>
        <transactionTimeliness>
            <value></value>
        </transactionTimeliness>
        <transactionAmounts>
            <transactionShares>
                <value>401883</value>
            </transactionShares>
            <transactionValue>
                <value>0.26</value>
            </transactionValue>
            <transactionAcquiredDisposedCode>
                <value>D</value>
            </transactionAcquiredDisposedCode>
        </transactionAmounts>
        <postTransactionAmounts>
            <sharesOwnedFollowingTransaction>
                <value>17569761</value>
                <footnoteId id="F1"/>
            </sharesOwnedFollowingTransaction>
        </postTransactionAmounts>
        <ownershipNature>
            <directOrIndirectOwnership>
                <value>D</value>
            </directOrIndirectOwnership>
        </ownershipNature>
    </nonDerivativeSecurity>

    <footnotes>
        <footnote id="F1">11,031,430 Trust Units held directly in individual retirement accounts through a custodian; 6,320,119 Trust Units held as trustee of the Richard C. McKenzie Jr. 1997 Trust; 198,912 Trust Units directly held as co-trustee (with wife Margaret Byrne McKenzie) of the Charitable Lead Annuity Trust 2000; 19,300 Trust Units directly held as co-trustee (with wife Margaret Byrne McKenzie) of the Charitable Lead Annuity Trust 2001.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Kathryn Smith</signatureName>
        <signatureDate>2003-07-03</signatureDate>
    </ownerSignature>

</ownershipDocument>

</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----