Exhibit 23.1
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We consent to the incorporation by reference in the Registration Statement (Form S-8) pertaining to the 2023 Stock Option Plan and the 2023 Free Shares Plan of Cellectis S.A., of our reports dated March 14, 2023, with respect to the consolidated financial statements of Cellectis S.A. and the effectiveness of internal control over financial reporting of Cellectis S.A., included in its Annual Report (Form 20-F) for the year ended December 31, 2022, filed with the Securities and Exchange Commission.
| /s/ ERNST & YOUNG et Autres |
| Paris La Défense, France |
| August 7, 2023 |
