Exhibit 23.1

Consent of Independent Registered Public Accounting Firm

We consent to the incorporation by reference in the following Registration Statements:

1) Registration Statement (Form S-1 Nos. 333-225410 and 333-225734) of Astria Therapeutics, Inc.,

2) Registration Statement (Form S-3 Nos. 333-254174 and 333-264911) of Astria Therapeutics, Inc., and

3) Registration Statement (Form S-8 Nos. 333-206394, 333-210229, 333-216793, 333-223721, 333-229643, 333-239114, 333-254151, 333-258633, and 333-263459) pertaining to the equity incentive plans of Astria Therapeutics, Inc.;

of our report dated March 22, 2023, with respect to the consolidated financial statements of Astria Therapeutics, Inc. included in this Annual Report (Form 10-K) of Astria Therapeutics, Inc. for the year ended December 31, 2022.

/s/ Ernst & Young LLP

Boston, Massachusetts

March 22, 2023