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 - August  28,  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 September
22, 2006 to  stockholders  of record at the close of business  on  September  8,
2006.

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

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