Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
SIMMONS HAROLD C
   2. Issuer Name and Ticker or Trading Symbol
KRONOS WORLDWIDE INC [KRO] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director __X__ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Chairman of the Board & CEO
(Last)
(First)
(Middle)
THREE LINCOLN CENTRE, 5430 LBJ FREEWAY STE 1700		 3. Date of Earliest Transaction (Month/Day/Year)
11/27/2007
(Street)

DALLAS, TX 75240-2697		 4. If Amendment, Date Original Filed(Month/Day/Year)
 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)		 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)		 4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)		 5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)		 6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)		 7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Common Stock $0.01 par value 11/27/2007   P   600 A $ 15.58 105,067 D  
Common Stock $0.01 par value 11/27/2007   P   100 A $ 15.6 105,167 D  
Common Stock $0.01 par value 11/27/2007   P   100 A $ 15.62 105,267 D  
Common Stock $0.01 par value 11/27/2007   P   400 A $ 15.75 105,667 D  
Common Stock $0.01 par value 11/27/2007   P   200 A $ 15.85 105,867 D  
Common Stock $0.01 par value 11/27/2007   P   700 A $ 15.88 106,567 D  
Common Stock $0.01 par value 11/27/2007   P   200 A $ 15.91 106,767 D  
Common Stock $0.01 par value 11/27/2007   P   100 A $ 15.93 106,867 D  
Common Stock $0.01 par value 11/27/2007   P   300 A $ 15.94 107,167 D  
Common Stock $0.01 par value 11/27/2007   P   2,400 A $ 15.95 109,567 D  
Common Stock $0.01 par value 11/27/2007   P   500 A $ 15.99 110,067 D  
Common Stock $0.01 par value 11/27/2007   P   1,400 A $ 16 111,467 D  
Common Stock $0.01 par value               28,995,021 I By Valhi (1)
Common Stock $0.01 par value               17,516,312 I By NL (2)
Common Stock $0.01 par value               5,203 I By TFMC (3)
Common Stock $0.01 par value               36,356 I By Spouse (4)

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)		 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)		 5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)		 6. Date Exercisable and Expiration Date
(Month/Day/Year)		 7. Title and Amount of Underlying Securities
(Instr. 3 and 4)		 8. Price of Derivative Security
(Instr. 5)		 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)		 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)		 11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
SIMMONS HAROLD C
THREE LINCOLN CENTRE
5430 LBJ FREEWAY STE 1700
DALLAS, TX 75240-2697		   X   X   Chairman of the Board & CEO  

Signatures

 A. Andrew R. Louis, Attorney-in-fact, for Harold C. Simmons   11/29/2007
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) Directly held by Valhi, Inc. See the Additional Information filed as Exhibit 99 to this statement for a description of the relationships among the persons joining in this filing.
(2) Directly held by NL Industries, Inc. See the Additional Information filed as Exhibit 99 to this statement for a description of the relationships among the persons joining in this filing.
(3) Directly held by TIMET Finance Management Company. See the Additional Information filed as Exhibit 99 to this statement for a description of the relationships among the persons joining in this filing.
(4) Directly held by the Reporting Person's spouse. The Reporting Person disclaims beneficial ownership of these shares.
 
Remarks:
Exhibit Index
99 Additional Information

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