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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
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 WW/roXevv3V6vSRyfYnfSQ==

<SEC-DOCUMENT>0001257640-04-000099.txt : 20041221
<SEC-HEADER>0001257640-04-000099.hdr.sgml : 20041221
<ACCEPTANCE-DATETIME>20041221184141
ACCESSION NUMBER:		0001257640-04-000099
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20040302
FILED AS OF DATE:		20041221
DATE AS OF CHANGE:		20041221

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			KRONOS WORLDWIDE INC
		CENTRAL INDEX KEY:			0001257640
		STANDARD INDUSTRIAL CLASSIFICATION:	INDUSTRIAL INORGANIC CHEMICALS [2810]
		IRS NUMBER:				760294959

	BUSINESS ADDRESS:	
		STREET 1:		5430 LBJ FREEWAY
		STREET 2:		SUITE 1700
		CITY:			DALLAS
		STATE:			TX
		ZIP:			75240
		BUSINESS PHONE:		9722331700

	MAIL ADDRESS:	
		STREET 1:		5430 LBJ FREEWAY
		STREET 2:		SUITE 1700
		CITY:			DALLAS
		STATE:			TX
		ZIP:			75240

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	KRONOS INC
		DATE OF NAME CHANGE:	20030730

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			SIMMONS HAROLD C
		CENTRAL INDEX KEY:			0001037854
		STATE OF INCORPORATION:			TX
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-31763
		FILM NUMBER:		041218741

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		9722331700

	MAIL ADDRESS:	
		STREET 1:		THREE LINCOLN CENTRE
		STREET 2:		5430 LBJ FREEWAY STE 1700
		CITY:			DALLAS
		STATE:			TX
		ZIP:			75240-2697
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>hcsf4kro40302_ex.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2004-03-02</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001257640</issuerCik>
        <issuerName>KRONOS WORLDWIDE INC</issuerName>
        <issuerTradingSymbol>KRO</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001037854</rptOwnerCik>
            <rptOwnerName>SIMMONS HAROLD C</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>THREE LINCOLN CENTRE</rptOwnerStreet1>
            <rptOwnerStreet2>5430 LBJ FREEWAY STE 1700</rptOwnerStreet2>
            <rptOwnerCity>DALLAS</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>75240-2697</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chairman of the Board &amp; CEO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common stock, $0.01 par value per share</value>
            </securityTitle>
            <transactionDate>
                <value>2004-03-02</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>400</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>32.5</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>34337</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>by Spouse</value>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common stock, $0.01 par value per share</value>
            </securityTitle>
            <transactionDate>
                <value>2004-03-02</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>100</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>32.4</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>34237</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>by Spouse</value>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common stock, $0.01 par value per share</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>15701494</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>by Valhi</value>
                    <footnoteId id="F3"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common stock, $0.01 par value per share</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>25047507</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>by NL</value>
                    <footnoteId id="F4"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common stock, $0.01 par value per share</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>5107770</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>by Tremont</value>
                    <footnoteId id="F5"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common stock, $0.01 par value per share</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>3000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Open market sale by Reporting Person's spouse.</footnote>
        <footnote id="F2">Directly held by the Reporting Person's spouse. The Reporting Person disclaims beneficial ownership of these shares.</footnote>
        <footnote id="F3">Directly held by Valhi, Inc. See the Additional Information filed as Exhibit 99 to this statement for a description of the
relationships among the persons joining in this filing.</footnote>
        <footnote id="F4">Directly held by NL Industries, Inc. See the Additional Information filed as Exhibit 99 to this statement for a description
of the relationships among the persons joining in this filing.</footnote>
        <footnote id="F5">Directly held by Tremont LLC. See the Additional Information filed as Exhibit 99 to this statement for a description of the
relationships among the persons joining in this filing.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>A. Andrew R. Louis, Attorney-in-fact, for Harold C. Simmons</signatureName>
        <signatureDate>2004-12-21</signatureDate>
    </ownerSignature>
</ownershipDocument>

</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99
<SEQUENCE>2
<FILENAME>kro40302.htm
<DESCRIPTION>ADDITIONAL INFORMATION AS OF 03/02/2004
<TEXT>
<HTML><HEAD><TITLE></TITLE>
</HEAD>
<BODY><A name=A001></A>
<P align=left><FONT face="Times New Roman, Times, Serif" size=2>Additional
Information as of 03/02/2004</FONT></P><!-- MARKER FORMAT-SHEET="Para Flush" FSL="Default" -->
<P><FONT face="Times New Roman, Times, Serif" size=2>NL, Industries, Inc.
("NL"), Valhi, Inc. ("Valhi") and Tremont LLC ("Tremont") are the holders of
51.2%, 32.1% and 10.4%, respectively, of the outstanding shares of common stock,
par value $0.01 per share ("Common Stock"), of the issuer. </FONT></P><!-- MARKER FORMAT-SHEET="Para Flush" FSL="Default" -->
<P><FONT face="Times New Roman, Times, Serif" size=2>Valhi and Tremont are the
direct holders of approximately 62.4% and 21.2%, respectively, of the
outstanding common stock of NL. Valhi is the direct holder of 100% of the
membership interests of Tremont. Valhi Group, Inc. ("VGI"), National City Lines,
Inc. ("National"), Contran, the Harold Simmons Foundation, Inc. (the
"Foundation"), the Contran Deferred Compensation Trust No. 2 (the "CDCT No. 2")
and The Combined Master Retirement Trust (the "CMRT") are the direct holders of
approximately 77.6%, 9.1%, 3.1%, 0.9%, 0.4% and 0.1%, respectively, of the
outstanding shares of Valhi common stock. National, NOA, Inc. ("NOA") and Dixie
Holding Company ("Dixie Holding") are the direct holders of approximately 73.3%,
11.4% and 15.3%, respectively, of the outstanding common stock of VGI. Contran
and NOA are the direct holders of approximately 85.7% and 14.3%, respectively,
of the outstanding common stock of National. Contran and Southwest Louisiana
Land Company, Inc. ("Southwest") are the direct holders of approximately 48.9%
and 51.1%, respectively, of the outstanding common stock of NOA. Dixie Rice
Agricultural Corporation, Inc. ("Dixie Rice") is the direct holder of 100% of
the outstanding common stock of Dixie Holding. Contran is the holder of 100% of
the outstanding common stock of Dixie Rice and approximately 88.9% of the
outstanding common stock of Southwest. </FONT></P><!-- MARKER FORMAT-SHEET="Para Flush" FSL="Default" -->
<P><FONT face="Times New Roman, Times, Serif" size=2>Substantially all of
Contran's outstanding voting stock is held by trusts established for the benefit
of certain children and grandchildren of Harold C. Simmons (the "Trusts"), of
which Mr. Simmons is the sole trustee. As sole trustee of each of the Trusts,
Mr. Simmons has the power to vote and direct the disposition of the shares of
Contran stock held by each of the Trusts. </FONT></P><!-- MARKER FORMAT-SHEET="Para Flush" FSL="Default" -->
<P><FONT face="Times New Roman, Times, Serif" size=2>Harold C. Simmons is the
chairman of the board and chief executive officer of each of the issuer and NL
and the chairman of the board of each of Tremont, Valhi, VGI, National, NOA,
Dixie Holding, Dixie Rice, Southwest and Contran. </FONT></P><!-- MARKER FORMAT-SHEET="Para Flush" FSL="Default" -->
<P><FONT face="Times New Roman, Times, Serif" size=2>The Foundation directly
holds approximately 0.9% of the outstanding shares of Valhi common stock. The
Foundation is a tax-exempt foundation organized for charitable purposes. Harold
C. Simmons is the chairman of the board of the Foundation. </FONT></P><!-- MARKER FORMAT-SHEET="Para Flush" FSL="Default" -->
<P><FONT face="Times New Roman, Times, Serif" size=2>The CDCT No. 2 directly
holds approximately 0.4% of the outstanding shares of Valhi common stock. U.S.
Bank National Association serves as the trustee of the CDCT No. 2. Contran
established the CDCT No. 2 as an irrevocable "rabbi trust" to assist Contran in
meeting certain deferred compensation obligations that it owes to Harold C.
Simmons. If the CDCT No. 2 assets are insufficient to satisfy such obligations,
Contran is obligated to satisfy the balance of such obligations as they come
due. Pursuant to the terms of the CDCT No. 2, Contran (i) retains the power to
vote the shares of Valhi common stock held directly by the CDCT No. 2, (ii)
retains dispositive power over such shares and (iii) may be deemed the indirect
beneficial owner of such shares. </FONT></P><!-- MARKER FORMAT-SHEET="Para Flush" FSL="Default" -->
<P><FONT face="Times New Roman, Times, Serif" size=2>The CMRT directly holds
approximately 0.1% of the outstanding shares of Valhi common stock. Valhi
established the CMRT to permit the collective investment by master trusts that
maintain the assets of certain employee benefit plans Valhi and related
companies adopt. Harold C. Simmons is the sole trustee of the CMRT and a member
of the trust investment committee for the CMRT. Valhi's board of directors
selects the trustee and members of the trust investment committee for the CMRT.
Harold C. Simmons disclaims beneficial ownership of the shares of Valhi common
stock held by the CMRT, except to the extent of his individual vested beneficial
interest, if any, in the assets held by the CMRT. </FONT></P><!-- MARKER FORMAT-SHEET="Para Flush" FSL="Default" -->
<P><FONT face="Times New Roman, Times, Serif" size=2>By virtue of the holding of
the offices, the stock ownership and his services as trustee, all as described
above, (a) Harold C. Simmons may be deemed to control such entities and (b) Mr.
Simmons and certain of such entities may be deemed to possess indirect
beneficial ownership of shares directly held by certain of such other entities.
However, Mr. Simmons disclaims such beneficial ownership of the shares
beneficially owned directly or indirectly by any of such entities, except to the
extent of his vested beneficial interest, if any, in shares held by the CMRT and
his interest as a beneficiary of the CDCT No. 2. Mr. Harold Simmons disclaims
beneficial ownership of all shares of Common Stock that NL, Valhi or Tremont
directly holds. </FONT></P><!-- MARKER FORMAT-SHEET="Para Flush" FSL="Default" -->
<P><FONT face="Times New Roman, Times, Serif" size=2>Harold C. Simmon' spouse
is the direct owner of 34,237 shares of Common Stock and 69,475 shares of NL
common stock. Mr. Simmons may be deemed to share indirect beneficial ownership
of such shares. Mr. Simmons disclaims all such beneficial ownership. </FONT></P><!-- MARKER FORMAT-SHEET="Para Flush" FSL="Default" -->
<P><FONT face="Times New Roman, Times, Serif" size=2>Harold C. Simmons directly
holds 3,000 shares of Common Stock, 31,800 shares of NL common stock (including
stock options exercisable for 8,000 shares) and 3,383 shares of Valhi common
stock. </FONT></P><!-- MARKER FORMAT-SHEET="Para Flush" FSL="Default" -->
<P><FONT face="Times New Roman, Times, Serif" size=2>Valmont Insurance Company
("Valmont"), NL and a subsidiary of NL directly own 1,000,000, 3,522,967 and
1,186,200 shares of Valhi common stock, respectively. Valhi is the direct holder
of 100% of the outstanding common stock of Valmont. Pursuant to Delaware law,
Valhi treats the shares of Valhi common stock that Valmont, NL, and the
subsidiary of NL own as treasury stock for voting purposes. For the purposes of
the percentage calculations herein, such shares are not deemed outstanding.
</FONT></P></BODY></HTML>

</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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