KRONOS WORLDWIDE, INC.                  Contact:  Gregory M. Swalwell
Three Lincoln Centre                              Vice President,  Finance
5430 LBJ Freeway, Suite 1700                         and Chief 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 - May 19,  2005 - 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 June 23,
2005 to stockholders of record at the close of business on June 10, 2005.

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

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