- Statement of Changes in Beneficial Ownership (4)

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	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response... 0.5
	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(f) of the Investment Company Act of 1940

1. Name and Address of Reporting Person ^* Maier Donald R.	2. Issuer Name and Ticker or Trading Symbol ARMSTRONG WORLD INDUSTRIES INC [ AWI ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __ X __ Officer (give title below) _____ Other (specify below) Sr. VP Global Operations
(Last) (First) (Middle) C/O ARMSTRONG WORLD INDUSTRIES, INC., 2500 COLUMBIA AVE	3. Date of Earliest Transaction (MM/DD/YYYY) 4/10/2012
(Street) LANCASTER, PA 17603 (City) (State) (Zip)	4. If Amendment, Date Original Filed (MM/DD/YYYY)	6. Individual or Joint/Group Filing (Check Applicable Line) _ X _ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security (Instr. 3)	2. Trans. Date	2A. Deemed Execution Date, if any	3. Trans. 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)
1.Title of Security (Instr. 3)	2. Trans. Date	2A. Deemed Execution Date, if any	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)

*Table II - Derivative Securities Beneficially Owned ( e.g.* , puts, calls, warrants, options, convertible securities)**
1. Title of Derivate Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Trans. Date	3A. Deemed Execution Date, if any	4. Trans. 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		7. Title and Amount of Securities Underlying Derivative Security (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)
1. Title of Derivate Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Trans. Date	3A. Deemed Execution Date, if any	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)			11. Nature of Indirect Beneficial Ownership (Instr. 4)
Stock Options	$26.21	4/10/2012		D ⁽¹⁾			10852	3/2/2011	3/2/2020	Common Stock	10852	⁽¹⁾	0	D
Stock Options	$22.48	4/10/2012		A ⁽¹⁾		12654		3/2/2011	3/2/2020	Common Stock	12654	⁽¹⁾	12654	D
Stock Options	$26.21	4/10/2012		D ⁽¹⁾			10852	3/2/2012	3/2/2020	Common Stock	10852	⁽¹⁾	0	D
Stock Options	$22.48	4/10/2012		A ⁽¹⁾		12654		3/2/2012	3/2/2020	Common Stock	12654	⁽¹⁾	12654	D
Stock Options	$26.21	4/10/2012		D ⁽¹⁾			10853	3/2/2013	3/2/2020	Common Stock	10853	⁽¹⁾	0	D
Stock Options	$22.48	4/10/2012		A ⁽¹⁾		12655		3/2/2013	3/2/2020	Common Stock	12655	⁽¹⁾	12655	D
Stock Options	$29.23	4/10/2012		D ⁽¹⁾			6582	4/1/2011	4/1/2020	Common Stock	6582	⁽¹⁾	0	D
Stock Options	$25.07	4/10/2012		A ⁽¹⁾		7675		4/1/2011	4/1/2020	Common Stock	7675	⁽¹⁾	7675	D
Stock Options	$29.23	4/10/2012		D ⁽¹⁾			6582	4/1/2012	4/1/2020	Common Stock	6582	⁽¹⁾	0	D
Stock Options	$25.07	4/10/2012		A ⁽¹⁾		7675		4/1/2012	4/1/2020	Common Stock	7675	⁽¹⁾	7675	D
Stock Options	$29.23	4/10/2012		D ⁽¹⁾			6582	12/31/2012	4/1/2020	Common Stock	6582	⁽¹⁾	0	D
Stock Options	$25.07	4/10/2012		A ⁽¹⁾		7676		12/31/2012	4/1/2020	Common Stock	7676	⁽¹⁾	7676	D
Stock Options	$41.47	4/10/2012		D ⁽¹⁾			6940	3/2/2012	3/2/2021	Common Stock	6940	⁽¹⁾	0	D
Stock Options	$35.57	4/10/2012		A ⁽¹⁾		8093		3/2/2012	3/2/2021	Common Stock	8093	⁽¹⁾	8093	D
Stock Options	$41.47	4/10/2012		D ⁽¹⁾			6941	3/2/2013	3/2/2021	Common Stock	6941	⁽¹⁾	0	D
Stock Options	$35.57	4/10/2012		A ⁽¹⁾		8094		3/2/2013	3/2/2021	Common Stock	8094	⁽¹⁾	8094	D
Stock Options	$41.47	4/10/2012		D ⁽¹⁾			6941	3/2/2014	3/2/2021	Common Stock	6941	⁽¹⁾	0	D
Stock Options	$35.57	4/10/2012		A ⁽¹⁾		8094		3/2/2014	3/2/2021	Common Stock	8094	⁽¹⁾	8094	D
Stock Options	$38.65	4/10/2012		D ⁽¹⁾			5168	11/1/2012	11/1/2021	Common Stock	5168	⁽¹⁾	0	D
Stock Options	$33.15	4/10/2012		A ⁽¹⁾		6026		11/1/2012	11/1/2021	Common Stock	6026	⁽¹⁾	6026	D
Stock Options	$38.65	4/10/2012		D ⁽¹⁾			5168	11/1/2013	11/1/2021	Common Stock	5168	⁽¹⁾	0	D
Stock Options	$33.15	4/10/2012		A ⁽¹⁾		6026		11/1/2013	11/1/2021	Common Stock	6026	⁽¹⁾	6026	D
Stock Options	$38.65	4/10/2012		D ⁽¹⁾			5168	11/1/2014	11/1/2021	Common Stock	5168	⁽¹⁾	0	D
Stock Options	$33.15	4/10/2012		A ⁽¹⁾		6026		11/1/2014	11/1/2021	Common Stock	6026	⁽¹⁾	6026	D
Stock Options	$50.38	4/10/2012		D ⁽¹⁾			9685	2/28/2013	2/28/2022	Common Stock	9685	⁽¹⁾	0	D
Stock Options	$43.21	4/10/2012		A ⁽¹⁾		11294		2/28/2013	2/28/2022	Common Stock	11294	⁽¹⁾	11294	D
Stock Options	$50.38	4/10/2012		D ⁽¹⁾			9685	2/28/2014	2/28/2022	Common Stock	9685	⁽¹⁾	0	D
Stock Options	$43.21	4/10/2012		A ⁽¹⁾		11294		2/28/2014	2/28/2022	Common Stock	11294	⁽¹⁾	11294	D
Stock Options	$50.38	4/10/2012		D ⁽¹⁾			9686	2/28/2015	2/28/2022	Common Stock	9686	⁽¹⁾	0	D
Stock Options	$43.21	4/10/2012		A ⁽¹⁾		11294		2/28/2015	2/28/2022	Common Stock	11294	⁽¹⁾	11294	D

Explanation of Responses:
( 1)	The reported transactions relate to an adjustment of outstanding stock options and exercise prices in connection with the Registrant's payment of a special cash dividend to shareholders on April 10, 2012, resulting in the deemed cancellation of the original options and the grant of replacement options. An adjustment is required under the terms of the underlying equity incentive plan.

Reporting Owners
Reporting Owner Name / Address	Relationships
Reporting Owner Name / Address	Director	10% Owner	Officer	Other
Maier Donald R. C/O ARMSTRONG WORLD INDUSTRIES, INC. 2500 COLUMBIA AVE LANCASTER, PA 17603			Sr. VP Global Operations

Signatures
/s/Christopher S. Parisi, Attorney-in-fact		4/12/2012
^** Signature of Reporting Person		Date

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
*	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).
Note:	File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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.

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- Statement of Changes in Beneficial Ownership (4)

- Statement of Changes in Beneficial Ownership (4)

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