FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF 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 *   Holmes Christopher D 2. Date of Event Requiring Statement (Month/Day/Year) 05/23/2011 3. Issuer Name and Ticker or Trading Symbol 3M CO [MMM] (Last) (First) (Middle) 3M CENTER 4. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) EXEC VP INDUSTRIAL & TRANS 5. If Amendment, Date Original Filed(Month/Day/Year) (Street) ST. PAUL, MN 55144-1000 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 Beneficially Owned

1.Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5) Common Stock 91 D Â

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.			SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Units	  (2)	  (2)	Common Stock	6,371	$ 0 (1)	D	Â
Restricted Stock Units	  (3)	  (3)	Common Stock	2,426	$ 0 (1)	D	Â
Restricted Stock Units	  (4)	  (4)	Common Stock	1,271	$ 0 (1)	D	Â
Restricted Stock Units	  (5)	  (5)	Common Stock	1,213	$ 0 (1)	D	Â
Non-qualified Stock Option (Right to Buy)	05/12/2005	05/09/2014	Common Stock	7,005	$ 84.4	D	Â
Non-qualified Stock Option (Right to Buy)	05/10/2006	05/08/2015	Common Stock	5,120	$ 76.8	D	Â
Non-qualified Stock Option (Right to Buy)	05/09/2007	05/09/2016	Common Stock	11,370	$ 87.35	D	Â
Non-qualified Stock Option (Right to Buy)	05/08/2008	05/08/2017	Common Stock	7,736	$ 84.78	D	Â
Non-qualified Stock Option (Right to Buy)	05/13/2009	05/13/2018	Common Stock	8,440	$ 77.18	D	Â
Non-qualified Stock Option (Right to Buy) (6)	02/09/2010	02/08/2019	Common Stock	11,100	$ 54.11	D	Â
Non-qualified Stock Option (Right to Buy) (7)	02/09/2011	02/07/2020	Common Stock	9,410	$ 78.72	D	Â
Non-qualified Stock Option (Right to Buy) (8)	02/08/2012	02/08/2021	Common Stock	10,067	$ 89.47	D	Â

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Holmes Christopher D 3M CENTER ST. PAUL, MN 55144-1000	Â	Â	  EXEC VP INDUSTRIAL & TRANS	Â

Signatures

/s/ George Ann Biros, attorney-in-fact for Christopher D. Holmes		05/26/2011
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 5(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)	Each restricted stock unit represents a contingent right to receive one share of 3M common stock.
(2)	The restricted stock units will vest on 3/3/2013
(3)	The restricted stock units will vest on 2/9/2012.
(4)	The restricted stock units will vest in equal installments on 2/9/2012 and 2/9/2013.
(5)	The restricted stock units will vest on 1/2/14.
(6)	This option became exercisable in equal installments on each of the first three anniversaries of the grant date (2/9/2009).
(7)	This option became exercisable in equal installments on each of the first three anniversaries of the grant date (2/9/2010).
(8)	This option becomes exercisable in equal installments on each of the first three anniversaries of the grant date (2/8/2011).

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