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                          August 8, 2023

       Steven W. Spector, Esq.
       General Counsel
       Longboard Pharmaceuticals, Inc.
       4275 Executive Square, Suite 950
       La Jolla, California 92037

                                                        Re: Longboard
Pharmaceuticals, Inc.
                                                            Registration
Statement on Form S-3
                                                            Filed August 4,
2023
                                                            File No. 333-273712

       Dear Steven W. Spector:

              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 Joshua
Gorsky at 202-551-7836 with any questions.




                          Sincerely,


                          Division of Corporation Finance

                          Office of Life Sciences
       cc:                                              Steven M. Przesmicki,
Esq.