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                        March 9, 2023

       Jeff Trigilio
       Chief Financial Officer
       Cullinan Oncology, Inc.
       One Main Street, Suite 1350
       Cambridge, MA 02142

                                                        Re: Cullinan Oncology,
Inc.
                                                            Registration
Statement on Form S-3
                                                            Filed March 9, 2023
                                                            File No. 333-270384

       Dear Jeff Trigilio:

              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 Jimmy
McNamara at 202-551-7349 with any questions.




                        Sincerely,


                        Division of Corporation Finance

                        Office of Life Sciences
       cc:                                              Thomas J. Danielski