Company: MMTIF
Filing Date: 2025-06-20
Form Type: 6-K
Source: 0001062993-25-011974
Chunk: 0

Company: MICROMEM TECHNOLOGIES INC
Filing Date: 2025-06-20
Form: 6-K
Chunk 0
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UNITED STATES
SECURITIES AND EXCHANGE COMMISSIONWashington,
D.C. 20549

FORM 6-K

Report of Foreign Private Issuer
Pursuant to Rule 13a-16 or 15d-16 of
the Securities Exchange Act of 1934

June 2025

Commission File Number 0-26005

MICROMEM TECHNOLOGIES INC.

121 Richmond Street West, Suite 602, Toronto, ON M5H 2K1

[Indicate by checkmark whether the
registrant files or will file annual reports under cover Form 20-F or Form
40-F.]

Form 20-F [X]
Form 40-F [ ]

[Indicate by check mark whether
the registrant by furnishing the information contained in this Form is also
thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b)
under the Securities Exchange Act of 1934.]

Yes [ ]
No [X]

[If "Yes"
is marked, indicate below the file number assigned to the registrant in
connection with rule 12g3-2(b): N/A

This report on Form 6-K is hereby incorporated by reference
in the registration statement on Form F-3 (Registration No. 333-134309) of
Micromem Technologies Inc. and in the prospectus contained therein, and this
report on Form 6-K shall be deemed a part of such registration statement from
the date on which this report is filed, to the extent not superseded by
documents or reports subsequently filed or furnished by Micromem Technologies
Inc. under the Securities Act of 1933 or the Securities Exchange Act of 1934.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of
1934, the registrant has duly caused this report to be signed on its behalf by
the undersigned, thereunto duly authorized.

| Date: June 20, 2025 | MICROMEM TECHNOLOGIES INC.       
 By:                              
 /s/ Joseph Fuda                  
 Name: Joseph Fuda                |
|:--------------------|:---------------------------------|
|                     | Title:   Chief Executive Officer |