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
OMB APPROVAL
OMB Number: 3235-0287
Expires: January 31, 2005
Estimated average burden hours per response... 0.5

(Print or Type Responses)
1. Name and Address of Reporting Person *
Molson Andrew Thomas
  2. Issuer Name and Ticker or Trading Symbol
MOLSON COORS BREWING CO [TAP.A; TAP]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
(Last)
(First)
(Middle)
C/O MOLSON COORS BREWING COMPANY, 311 10TH STREET, NH 311
3. Date of Earliest Transaction (Month/Day/Year)
05/12/2005
(Street)

GOLDEN, CO 80401-0300
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
Class B Common Stock (non-voting) 05/12/2005   A   1,500 A (5) 1,500 D  

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number. SEC 1474 (9-02)

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
Class A exchangeable shares of Molson Coors Canada Inc. (2)             02/09/2005   (1) Class A Common Stock 50   50 D  
Class A Common Stock (3) (2)             02/09/2005   (4) Class B Common Stock 50   50 D  
Class B exchangeable shares of Molson Coors Canada Inc. (2)             02/09/2005   (1) Class B Common Stock 93   93 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
Molson Andrew Thomas
C/O MOLSON COORS BREWING COMPANY
311 10TH STREET, NH 311
GOLDEN, CO 80401-0300
  X      

Signatures

 Annita M. Menogan as agent for Andrew T. Molson   05/16/2005
**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) The Class A exchangeable shares and Class B exchangeable shares are redeemable by a subsidiary of Molson Coors Brewing Company at any time after February 9, 2045, for the corresponding class of Molson Coors Brewing Company Common Stock or, for non-affiliates only, the equivalent value in cash.
(2) These shares are convertible on a 1-for-1 basis.
(3) These shares of Class A Common Stock are not outstanding but are issuable upon conversion of the Class A exchangeable shares of Molson Coors Canada Inc.
(4) No expiration date.
(5) These shares were issued as a restricted stock unit under the Issuer's Incentive Compensation Plan and shall vest on the third anniversary following the date of grant, subject to acceleration or cancellation upon the occurrence of certain events.

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

Potential persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB number.