EXHIBIT 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in Registration Statements on Form S-8 (Registration Nos. 333-168252, 333-152250, and 333-111386) of RegeneRx Biopharmaceuticals, Inc. (“the Company”) of our report, which includes an explanatory paragraph relating to the Company’s ability to continue as a going concern, dated March 30, 2022, on our audits of the financial statements of RegeneRx Biopharmaceuticals, Inc. as of December 31, 2021 and 2020 and for the years then ended, included in this Annual Report on Form 10-K for the year ended December 31, 2021.

/s/ CohnReznick LLP

Tysons, Virginia

March 30, 2022