Exhibit 23.1

Consent of Independent Registered Public Accounting Firm

We consent to the reference to our firm under the caption “Experts” in this Registration Statement (Form S-3) and related Prospectus of Century Therapeutics, Inc. for the registration of 176,086,947 shares of its common stock, and to the incorporation by reference therein of our report dated March 19, 2025, with respect to the consolidated financial statements of Century Therapeutics, Inc. included in its Annual Report (Form 10-K) for the year ended December 31, 2024, filed with the Securities and Exchange Commission.

/s/ Ernst & Young LLP

Philadelphia, Pennsylvania

February 5, 2026