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 *   Croatti Matthew 2. Date of Event Requiring Statement (Month/Day/Year) 09/21/2017 3. Issuer Name and Ticker or Trading Symbol UNIFIRST CORP [UNF] (Last) (First) (Middle) 68 JONSPIN ROAD 4. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director __X__ 10% Owner _____ Officer (give title below) _____ Other (specify below) 5. If Amendment, Date Original Filed(Month/Day/Year) (Street) WILMINGTON, MA 01887 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)

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
Stock Appreciation Right	10/26/2020	10/27/2025	Common Stock ($0.10 par value)	1,000	$ 104.67	D	Â
Stock Appreciation Right	10/24/2021	10/25/2026	Common Stock ($0.10 par value)	1,000	$ 119	D	Â
Stock Appreciation Right	10/23/2022	10/24/2027	Common Stock ($0.10 par value)	1,500	$ 156.05	D	Â
Class B Common Stock	  (1)	  (1)	Common Stock ($0.10 par value)	2,750,905	$ (1)	I (2) (3) (4)	By Partnership
Class B Common Stock	  (1)	  (1)	Common Stock ($0.10 par value)	70,000	$ (1)	D	Â

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Croatti Matthew 68 JONSPIN ROAD WILMINGTON, MA 01887	Â	  X	Â	Â

Signatures

/s/ David Whitman, Attorney-in-Fact		03/29/2018
**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 share of Class B Common Stock is convertible at any time by the holder into one share of Common Stock. Each share of Class B Common Stock automatically converts into one share of Common Stock upon transfer to a recipient that is not a permitted transferee or upon termination of the Class B Common Stock, in each case in accordance with the terms of the charter of UniFirst Corporation.
(2)	Includes 1,734,986 shares owned directly by The Queue Limited Partnership and 199 shares owned directly by Queue Management Associates, Inc. Queue Management Associates, Inc. is the general partner of The Queue Limited Partnership. The Ronald D. Croatti Trust - 1993 (of which Carol Croatti and Matthew Croatti are the trustees and Carol Croatti is the beneficiary), Cynthia Croatti and Cecilia Levenstein are the sole shareholders of Queue Management Associates, Inc., and Carol Croatti, Cynthia Croatti and Cecelia Levenstein are the directors of Queue Management Associates, Inc. Cynthia Croatti and Cecelia Levenstein are trustees, co-trustees and in some cases beneficiaries, and in some cases their children are beneficiaries, of various trusts which hold limited partnership interests in The Queue Limited Partnership. Ronald D. Croatti's children, including Matthew Croatti, are beneficiaries of certain trusts which hold limited partnership interests in The Queue Limited Partnership.
(3)	Includes 1,015,717 shares owned directly by The Red Cat Limited Partnership and 3 shares owned directly by Red Cat Management Associates, Inc. Red Cat Management Associates, Inc. is the general partner of The Red Cat Limited Partnership. The Ronald D. Croatti Trust - 1993 and Cynthia Croatti are the sole shareholders of Red Cat Management Associates, Inc. and Carol Croatti and Cynthia Croatti are the directors of Red Cat Management Associates, Inc. Cynthia Croatti and Cecelia Levenstein are trustees, co-trustees and in the case of Cynthia Croatti a beneficiary of certain trusts which hold limited partnership interests in The Red Cat Limited Partnership. Ronald D. Croatti's children, including Matthew Croatti, are beneficiaries of a trust which hold limited partnership interests in The Red Cat Limited Partnership.
(4)	Each of the aforementioned reporting persons disclaims beneficial ownership of these reported securities, except to the extent of his, her or its pecuniary interest therein, if any, and this report shall not be deemed an admission that such persons are the beneficial owners of these securities for purposes of Section 16 or any other purpose.

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