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 * CROATTI CYNTHIA   2. Issuer Name and Ticker or Trading Symbol UNIFIRST CORP [UNF] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director __X__ 10% Owner __X__ Officer (give title below) _____ Other (specify below) Executive VP and Treasurer (Last) (First) (Middle) 68 JONSPIN ROAD 3. Date of Earliest Transaction (Month/Day/Year) 12/20/2017 (Street) WILMINGTON, MA 01887 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 12/20/2017   A   1,332 (1) A $ 0 1,332 (2) D   Class B Common Stock               2,750,703 (3) (4) (5) I By Partnership Class B Common Stock               52,734 (6) (7) I By Trust Common Stock               68,534 (8) I By LLC

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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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
CROATTI CYNTHIA 68 JONSPIN ROAD WILMINGTON, MA 01887	X	X	Executive VP and Treasurer

Signatures

/s/ David Whitman, Attorney-in-Fact		12/21/2017
**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)	Represents restricted stock units granted under the UniFirst Corporation Amended and Restated 2010 Stock Option and Incentive Plan. Such restricted stock units vest 100% on the fifth anniversary of the grant date.
(2)	Consists of 1,332 restricted stock units that vest 100% on December 20, 2022.
(3)	Represents 1,734,986 shares owned directly by The Queue Limited Partnership and indirectly by each of Queue Management Associates, Inc., The Ronald D. Croatti Trust - 1993, Cynthia Croatti and Cecelia Levenstein. Queue Management Associates, Inc. is the general partner of The Queue Limited Partnership. The Ronald D. Croatti Trust - 1993, Cynthia Croatti and Cecilia Levenstein are the sole shareholders of Queue Management Associates, Inc., and Carol Croatti, Cynthia Croatti and Cecelia Levenstein are directors of Queue Management Associates, Inc. Carol Croatti is a beneficiary, but not a trustee, of a trust holding a limited partnership interest in The Queue Limited Partnership. Cynthia Croatti and Cecelia Levenstein are trustees or beneficiaries of various trusts which hold limited partnership interests in The Queue Limited Partnership.
(4)	Also includes 1,015,717 shares owned directly by The Red Cat Limited Partnership and indirectly by each of Red Cat Management Associates, Inc., The Ronald D. Croatti Trust - 1993 and Cynthia Croatti. 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 directors of Red Cat Management Associates, Inc. Carol Croatti is the beneficiary, but not a trustee, of a trust holding a limited partnership interest in The Red Cat Limited Partnership. Cynthia Croatti and Cecelia Levenstein are trustees or beneficiaries of certain trusts which hold limited partnership interests in The Red Cat Limited Partnership.
(5)	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, 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.
(6)	Represents 4,374 shares owned directly by The Marie Croatti QTIP Trust. Cynthia Croatti is trustee of The Marie Croatti QTIP Trust. Cynthia Croatti disclaims beneficial ownership of these reported securities, except to the extent of her pecuniary interest therein, and this report shall not be deemed an admission that she is the beneficial owner of these securities for purposes of Section 16 or any other purpose.
(7)	Cynthia Croatti is a trustee of The Samuel E. Brown Gallo Trust - 1989 and The Nicholas C. Brown Gallo Trust - 1989, which as of the date of filing this report, each directly owns a portion of the 48,000 reported securities. Cynthia Croatti disclaims beneficial ownership of these reported securities, except to the extent of her pecuniary interest therein, and this report shall not be deemed an admission that she is the beneficial owner of the securities for purposes of Section 16 or any other purpose.
(8)	Cynthia Croatti is the manager of Trilogy Investment Partners LLC, which as of the date of filing this report, directly owns the reported securities. Cynthia Croatti disclaims beneficial ownership of these reported securities, except to the extent of her pecuniary interest therein, and this report shall not be deemed an admission that she is the beneficial owner of the securities for purposes of Section 16 or any other purpose.

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