UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM 8-K

                                 CURRENT REPORT

                Pursuant to Section 13 OR 15(d) of the Securities
                              Exchange Act of 1934

              Date of Report (Date of the earliest event reported)
                                  May 19, 2005
                                ----------------

                             Kronos Worldwide, Inc.
             ------------------------------------------------------
             (Exact name of Registrant as specified in its charter)

     Delaware                        1-31763                    76-0294959
- -------------------              ------------------          -----------------
  (State or other                  (Commission                  (IRS Employer
  jurisdiction of                  File Number)                 Identification
   incorporation)                                                    No.)

  5430 LBJ Freeway, Suite 1700, Dallas, Texas                   75240-2697
- ----------------------------------------------                 ------------
  (Address of principal executive offices)                      (Zip Code)

               Registrant's telephone number, including area code
                                 (972) 233-1700
                                 --------------


              (Former name or former address, if changed since last
                                    report.)

Check  the  appropriate  box  below  if the  Form  8-K  filing  is  intended  to
simultaneously  satisfy the filing obligation of the registrant under any of the
following provisions (see General Instruction A.2):

[   ]      Written communications pursuant to Rule 425 under the Securities Act
           (17 CFR 230.425)

[   ]      Soliciting material pursuant to Rule 14a-12 under the Exchange Act
           (17 CFR 240.14a-12)

[   ]      Pre-commencement   communications   pursuant  to  Rule  14d-2(b)
           under  the  Exchange  Act  (17  CFR 240.14d-2(b))

[   ]      Pre-commencement   communications   pursuant  to  Rule  13e-4(c)
           under  the  Exchange  Act  (17  CFR 240.13e-4(c))


Item 7.01 Regulation FD Disclosure. The registrant hereby furnishes the information set forth in its press release issued on May 19, 2005, a copy of which is attached hereto as Exhibit 99.1 and incorporated herein by reference. The information, including the exhibit, the registrant furnishes in this report is not deemed "filed" for purposes of section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section. Registration statements or other documents filed with the Securities and Exchange Commission shall not incorporate this information by reference, except as otherwise expressly stated in such filing. Item 9.01 Financial Statements and Exhibits. (c) Exhibits. Item No. Exhibit Index ---------- ---------------------------------------- 99.1 Press Release dated May 19, 2005 issued by the registrant.

SIGNATURE Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. KRONOS WORLDWIDE, INC. (Registrant) By: /s/ A. Andrew R. Louis ----------------------- A. Andrew R. Louis Assistant Secretary Date: May 19, 2005

INDEX TO EXHIBITS Exhibit No. Description - ----------- -------------------------------------------------- 99.1 Press Release dated May 19, 2005 issued by the registrant.

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
- --------------------------------------------------------------------------------
PRESS RELEASE
- --------------------------------------------------------------------------------
[LOGO GOES HERE]




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.

                                    * * * * *