United States securities and exchange commission logo September 14, 2023 Kabir Nath Chief Executive Officer COMPASS Pathways plc 33 Broadwick Street London W1F 0DQ United Kingdom Re: COMPASS Pathways plc Registration Statement on Form S-3 Filed September 8, 2023 File No. 333-274436 Dear Kabir Nath: This is to advise you that we have not reviewed and will not review your registration statement. Please refer to Rules 460 and 461 regarding requests for acceleration. We remind you that the company and its management are responsible for the accuracy and adequacy of their disclosures, notwithstanding any review, comments, action or absence of action by the staff. Please contact Dillon Hagius at 202-551-7967 with any questions. Sincerely, Division of Corporation Finance Office of Life Sciences cc: Benjamin Marsh