KRONOS WORLDWIDE, INC.               Contact: Gregory M. Swalwell
Three Lincoln Centre                          Vice President,  Finance and Chief
5430 LBJ Freeway, Suite 1700                  Financial Officer
Dallas, Texas   75240-2697                    (972) 233-1700
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                                 PRESS RELEASE
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FOR IMMEDIATE RELEASE


               KRONOS WORLDWIDE, INC. ANNOUNCES QUARTERLY DIVIDEND


     DALLAS,  TEXAS - February 21, 2006 - Kronos  Worldwide,  Inc.  (NYSE:  KRO)
announced that its board of directors has declared a regular quarterly  dividend
of twenty five cents ($0.25) per share on its common stock, payable on March 27,
2006 to stockholders of record at the close of business on March 10, 2006.

     Kronos  Worldwide,  Inc.  is a major  international  producer  of  titanium
dioxide pigments.

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