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)
                                  April 5, 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)


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


             (Former name or 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 1.01 Entry into a Material Definitive Agreement.

Item 1.02 Termination of a Material Definitive Agreement

Item 2.03 Creation of a Direct  Financial  Obligation or an Obligation  under an
          Off-Balance Sheet Arrangement of a Registrant.

Item 2.04 Triggering  Events  That  Accelerate  or  Increase a Direct  Financial
          Obligation or an Obligation under an Off-Balance  Sheet Arrangement of
          a Registrant.

     Effective April 5, 2006, Kronos International, Inc., a Delaware corporation
and a wholly owned subsidiary of the registrant ("KII"), entered into a Purchase
Agreement (the  "Purchase  Agreement")  with Deutsche Bank AG London  ("Deutsche
Bank")  pursuant to which KII agreed to issue and sell to Deutsche Bank euro 400
million of 6.5% Senior  Secured  Notes due 2013 (the "Notes") at the issue price
of 99.306%.  The closing of the issuance and sale of the Notes occurred on April
11,  2006.  Also  pursuant  to  the  Purchase  Agreement,  KII  entered  into  a
Registration  Rights  Agreement,  dated as of April 11, 2006 (the  "Registration
Rights  Agreement"),  with  Deutsche  Bank for the benefit of the holders of the
Notes.

     The Notes were issued pursuant to an Indenture (the "Indenture"),  dated as
of April 11, 2006, between KII and The Bank of New York, as trustee.

     It is expected that KII will use all of the net proceeds of the offering of
the Notes,  together with  approximately  $2.1 million of cash on hand, to repay
euro 375 million  principal  amount of its 8.875% senior  secured notes due 2009
(the "Existing Notes") at the stated redemption price of 104.437%,  plus accrued
and unpaid  interest.  KII has satisfied its  obligations  under the  Indenture,
dated as of June 22, 2004 (the "Existing Indenture"), between the registrant and
The Bank of New York, as trustee,  and the trustee has  discharged  the Existing
Indenture and released the liens on collateral thereunder.

     Pursuant to the Purchase Agreement,  Deutsche Bank has agreed to resell the
Notes under the Securities Act of 1933, as amended (the  "Securities  Act"),  to
qualified  institutional  buyers in the United  States of America in reliance on
Rule 144A and to persons  outside of the United States in reliance on Regulation
S. The Notes will not be  registered  under the  Securities  Act and,  unless so



registered,  may not be offered or sold in the United States except  pursuant to
an  exemption  from,  or in a  transaction  not  subject  to,  the  registration
requirements of the Securities Act and applicable securities laws.

     Pursuant to the Registration  Rights Agreement,  KII agreed to use its best
efforts,  and at its cost,  to (i) file within 120 days of the issue date of the
Notes a registration statement to register under the Securities Act notes of KII
with terms  substantially  identical in all material  respects to the Notes (the
"Exchange  Notes"),  (ii)  cause  such  registration  statement  to be  declared
effective  within 270 days of the issue date of the Notes and (iii)  complete an
offer to exchange the Notes for the Exchange  Notes within 300 days of the issue
date of the Notes.

     The  descriptions  herein of the Purchase  Agreement  and the  Registration
Rights  Agreement  are  qualified in their  entirety,  and the terms thereof are
incorporated herein, by reference to the Purchase Agreement and the Registration
Rights  Agreement  filed as Exhibits 4.4 and 4.5,  respectively,  to the Current
Report  on Form 8-K of KII (File No.  333-100047)  that was filed  with the U.S.
Securities and Exchange Commission on April 11, 2006.

     For a description  of the terms of, and  collateral  related to, the Notes,
please see:

     (1)  the Indenture  (which is  incorporated  herein by reference to Exhibit
          4.1 to the  Current  Report on Form 8-K of KII  (File No.  333-100047)
          that was filed with the U.S.  Securities  and Exchange  Commission  on
          April 11, 2006 (the "Form 8-K"));

     (2)  Collateral Agency  Agreement,  dated April 11, 2006, among The Bank of
          New York,  U.S. Bank,  N.A. and Kronos  International,  Inc. (which is
          incorporated herein by reference to Exhibit 4.6 to the Form 8-K);

     (3)  Security Over Shares Agreement (shares of Kronos Limited), dated April
          11, 2006, between Kronos International,  Inc. and The Bank of New York
          (which is incorporated  herein by reference to Exhibit 4.7 to the Form
          8-K);

     (4)  Pledge of Shares (shares in Kronos Denmark ApS), dated April 11, 2006,
          between  Kronos  International,  Inc. and U.S.  Bank,  N.A.  (which is
          incorporated herein by reference to Exhibit 4.8 to the Form 8-K);


     (5)  Pledge  Agreement  (shares in Societe  Industrielle  du Titane  S.A.),
          dated April 11,  2006,  between  Kronos  International,  Inc. and U.S.
          Bank, N.A.  (which is incorporated  herein by reference to Exhibit 4.9
          to the Form 8-K); and

     (6)  Share Pledge Agreement (shares in Kronos Titan GmbH),  dated April 11,
          2006, between Kronos International, Inc. and U.S. Bank, N.A. (which is
          incorporated herein by reference to Exhibit 4.10 to the Form 8-K).

The Purchase Agreement,  the Registration Rights Agreement,  and each of the six
agreements and instruments noted directly above are incorporated by reference to
provide  information  regarding their respective terms. They are not intended to
provide any other factual  information  about the matters covered therein.  Such
agreements and instruments  contain  representations  and warranties the parties
thereto  made to,  and  solely  for,  the  benefit of each other and not for the
benefit of any other party. The assertions embodied in those representations and
warranties are qualified by information in confidential  disclosure schedules or
other  information that the parties exchanged prior to and/or in connection with
the execution of such  agreements and  instruments.  Accordingly,  investors and
stockholders  should  not  rely  on  those  representations  and  warranties  as
characterizations  of the actual state of facts, since they were only made as of
the  date  of  such  agreements  and  the  closing,  as  applicable,  and may be
materially   modified  or  qualified  by  the  disclosure   schedules  or  other
information  or may merely  reflect  agreed-upon  allocations  of risk among the
parties to such agreements.  Moreover, information concerning the subject matter
of those  representations  and warranties  may change  subsequent to the date of
such agreements or documents or the closing.

Item 9.01           Financial Statements and Exhibits.

         (c) Exhibits.

    Item No.         Exhibit Index
   ----------     ----------------------------------------

      4.1      Indenture governing the 6.5% Senior Secured Notes due 2013, dated
               as of April 11, 2006, between Kronos International,  Inc. and The
               Bank of New  York,  as  trustee  (incorporated  by  reference  to
               Exhibit  4.1  to  the  Current  Report  on  Form  8-K  of  Kronos



               International, Inc. (File No. 333-100047) that was filed with the
               U.S. Securities and Exchange Commission on April 11, 2006).

      4.2      Form of certificate of Series A 6.5% Senior Secured Note due 2013
               (incorporated  by reference to Exhibit 4.2 to the Current  Report
               on Form 8-K of Kronos  International,  Inc. (File No. 333-100047)
               that was filed with the U.S.  Securities and Exchange  Commission
               on April 11, 2006).

      4.3      Form of certificate of Series B 6.5% Senior Secured Note due 2013
               (incorporated  by reference to Exhibit 4.3 to the Current  Report
               on Form 8-K of Kronos  International,  Inc. (File No. 333-100047)
               that was filed with the U.S.  Securities and Exchange  Commission
               on April 11, 2006).

      4.4      Purchase   Agreement   dated   April  5,  2006   between   Kronos
               International,  Inc. and Deutsche Bank AG London (incorporated by
               reference  to Exhibit  4.1 to the  Current  Report on Form 8-K of
               Kronos  International,  Inc. (File No. 333-100047) that was filed
               with the U.S.  Securities  and Exchange  Commission  on April 11,
               2006).

      4.5      Registration  Rights Agreement dated as of April 11, 2006 between
               Kronos   International,   Inc.  and   Deutsche   Bank  AG  London
               (incorporated  by reference to Exhibit 4.5 to the Current  Report
               on Form 8-K of Kronos  International,  Inc. (File No. 333-100047)
               that was filed with the U.S.  Securities and Exchange  Commission
               on April 11, 2006)

      4.6      Collateral Agency Agreement, dated April 11, 2006, among The Bank
               of New York,  U.S.  Bank,  N.A.  and Kronos  International,  Inc.
               (incorporated  by reference to Exhibit 4.6 to the Current  Report



               on Form 8-K of Kronos  International,  Inc. (File No. 333-100047)
               that was filed with the U.S.  Securities and Exchange  Commission
               on April 11, 2006).

      4.7      Security  Over Shares  Agreement,  dated April 11, 2006,  between
               Kronos International, Inc. and The Bank of New York (incorporated
               by reference to Exhibit 4.7 to the Current  Report on Form 8-K of
               Kronos  International,  Inc. (File No. 333-100047) that was filed
               with the U.S.  Securities  and Exchange  Commission  on April 11,
               2006).

      4.8      Pledge of Shares (shares in Kronos Denmark ApS),  dated April 11,
               2006,  between Kronos  International,  Inc. and U.S.  Bank,  N.A.
               (incorporated  by reference to Exhibit 4.8 to the Current  Report
               on Form 8-K of Kronos  International,  Inc. (File No. 333-100047)
               that was filed with the U.S.  Securities and Exchange  Commission
               on April 11, 2006).

      4.9      Pledge Agreement (shares in Societe Industrielle du Titane S.A.),
               dated April 11, 2006, between Kronos International, Inc. and U.S.
               Bank,  N.A.  (incorporated  by  reference  to Exhibit  4.9 to the
               Current  Report on Form 8-K of Kronos  International,  Inc. (File
               No.  333-100047)  that was  filed  with the U.S.  Securities  and
               Exchange Commission on April 11, 2006)

      4.10     Share Pledge Agreement (shares in Kronos Titan GmbH), dated April
               11, 2006, between Kronos International,  Inc. and U.S. Bank, N.A.
               (incorporated  by reference to Exhibit 4.10 to the Current Report
               on Form 8-K of Kronos  International,  Inc. (File No. 333-100047)
               that was filed with the U.S.  Securities and Exchange  Commission
               on April 11, 2006).


                                    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:  April 11, 2006





                                INDEX TO EXHIBITS


Exhibit No.       Description
-----------       --------------------------------------------------
      4.1      Indenture governing the 6.5% Senior Secured Notes due 2013, dated
               as of April 11, 2006, between Kronos International,  Inc. and The
               Bank of New  York,  as  trustee  (incorporated  by  reference  to
               Exhibit  4.1  to  the  Current  Report  on  Form  8-K  of  Kronos
               International, Inc. (File No. 333-100047) that was filed with the
               U.S. Securities and Exchange Commission on April 11, 2006).

      4.2      Form of certificate of Series A 6.5% Senior Secured Note due 2013
               (incorporated  by reference to Exhibit 4.2 to the Current  Report
               on Form 8-K of Kronos  International,  Inc. (File No. 333-100047)
               that was filed with the U.S.  Securities and Exchange  Commission
               on April 11, 2006).

      4.3      Form of certificate of Series B 6.5% Senior Secured Note due 2013
               (incorporated  by reference to Exhibit 4.3 to the Current  Report
               on Form 8-K of Kronos  International,  Inc. (File No. 333-100047)
               that was filed with the U.S.  Securities and Exchange  Commission
               on April 11, 2006).

      4.4      Purchase   Agreement   dated   April  5,  2006   between   Kronos
               International,  Inc. and Deutsche Bank AG London (incorporated by
               reference  to Exhibit  4.1 to the  Current  Report on Form 8-K of
               Kronos  International,  Inc. (File No. 333-100047) that was filed
               with the U.S.  Securities  and Exchange  Commission  on April 11,
               2006).

      4.5      Registration  Rights Agreement dated as of April 11, 2006 between
               Kronos   International,   Inc.  and   Deutsche   Bank  AG  London
               (incorporated  by reference to Exhibit 4.5 to the Current  Report
               on Form 8-K of Kronos  International,  Inc. (File No. 333-100047)
               that was filed with the U.S.  Securities and Exchange  Commission
               on April 11, 2006)

      4.6      Collateral Agency Agreement, dated April 11, 2006, among The Bank
               of New York,  U.S.  Bank,  N.A.  and Kronos  International,  Inc.



               (incorporated  by reference to Exhibit 4.6 to the Current  Report
               on Form 8-K of Kronos  International,  Inc. (File No. 333-100047)
               that was filed with the U.S.  Securities and Exchange  Commission
               on April 11, 2006).

      4.7      Security  Over Shares  Agreement,  dated April 11, 2006,  between
               Kronos International, Inc. and The Bank of New York (incorporated
               by reference to Exhibit 4.7 to the Current  Report on Form 8-K of
               Kronos  International,  Inc. (File No. 333-100047) that was filed
               with the U.S.  Securities  and Exchange  Commission  on April 11,
               2006).

      4.8      Pledge of Shares (shares in Kronos Denmark ApS),  dated April 11,
               2006,  between Kronos  International,  Inc. and U.S.  Bank,  N.A.
               (incorporated  by reference to Exhibit 4.8 to the Current  Report
               on Form 8-K of Kronos  International,  Inc. (File No. 333-100047)
               that was filed with the U.S.  Securities and Exchange  Commission
               on April 11, 2006).

      4.9      Pledge Agreement (shares in Societe Industrielle du Titane S.A.),
               dated April 11, 2006, between Kronos International, Inc. and U.S.
               Bank,  N.A.  (incorporated  by  reference  to Exhibit  4.9 to the
               Current  Report on Form 8-K of Kronos  International,  Inc. (File
               No.  333-100047)  that was  filed  with the U.S.  Securities  and
               Exchange Commission on April 11, 2006)

      4.10     Share Pledge Agreement (shares in Kronos Titan GmbH), dated April
               11, 2006, between Kronos International,  Inc. and U.S. Bank, N.A.
               (incorporated  by reference to Exhibit 4.10 to the Current Report
               on Form 8-K of Kronos  International,  Inc. (File No. 333-100047)
               that was filed with the U.S.  Securities and Exchange  Commission
               on April 11, 2006).