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)
                                  June 26, 2006

                             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 June 26, 2006, 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 June 26, 2006 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/ Gregory M. Swalwell ---------------------------- Gregory M. Swalwell Vice President, Finance and Chief Financial Officer Date: June 26, 2006

INDEX TO EXHIBITS Exhibit No. Description - ----------- -------------------------------------------------- 99.1 Press Release dated June 26, 2006 issued by the registrant.

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


- --------------------------------------------------------------------------------
                                  News Release
- --------------------------------------------------------------------------------


 KRONOS WORLDWIDE, INC. ANNOUNCES COMMENCEMENT OF EXCHANGE OFFER FOR (euro)400
  MILLION OF SENIOR SECURED NOTES OF ITS KRONOS INTERNATIONAL, INC. SUBSIDIARY



DALLAS, TX - June 26, 2006 - Kronos Worldwide,  Inc. (NYSE: KRO) today announced
that its wholly-owned  subsidiary,  Kronos  International,  Inc.,  commenced its
offer to holders of (euro)400 million  aggregate  principal amount of its 6 1/2%
Senior  Secured  Notes due 2013 issued on April 11, 2006 to exchange  such notes
for a like  principal  amount  of notes  that  have  been  registered  under the
Securities Act of 1933, as amended.  Kronos International,  Inc. conducts Kronos
Worldwide's titanium dioxide pigment operations in Europe.

The exchange  offer is scheduled to expire on July 24, 2006, at 12:00  midnight,
New York City time, unless further extended by Kronos International. The Bank of
New York in London has been  appointed  as the  exchange  agent for the exchange
offer.  Requests for  assistance or documents  should be directed to the Bank of
New York at 011 44(207) 964 6513 or 011 44(207) 964 7235.

The statements in this release relating to matters that are not historical facts
are  forward-looking   statements  that  represent   management's   beliefs  and
assumptions based on currently available information. Forward-looking statements
can be identified by the use of words such as "will," "anticipates,"  "expects,"
or comparable  terminology or by discussions of strategy or trends.  Although we
believe that the expectations  reflected in such forward-looking  statements are
reasonable,  it cannot give any assurances that these expectations will prove to
be correct.  Such  statements by their nature  involve risks and  uncertainties,
including,  but not  limited  to,  global  economic  and  political  conditions,
financial  market  conditions,  changes  in  foreign  currency  exchange  rates,
operating interruptions  (including,  but not limited to, labor disputes, leaks,
fires, explosions,  unscheduled downtime,  transportation interruptions, war and
terrorist  activities),  and  other  risks  and  uncertainties  detailed  in our
Securities and Exchange  Commission  filings.  Should one or more of these risks
materialize (or the  consequences of such a development  worsen),  or should the
underlying  assumptions prove incorrect,  actual results could differ materially
from those  forecasted  or expected.  We disclaim any intention or obligation to
update  publicly  or  revise  such  statements,  whether  as  a  result  of  new
information, future events or otherwise.

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

This news release does not  constitute an offer to sell or the  solicitation  of
any offer to buy any securities.