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                          January 13, 2023

       Jay Short
       Co-Founder, Chief Executive Officer and Chairman
       BioAtla, Inc.
       11085 Torreyana Road
       San Diego, California, 92121

                                                        Re: BioAtla, Inc.
                                                            Registration
Statement on Form S-3
                                                            Filed on January 6,
2023
                                                            File No. 333-269148

       Dear Jay Short:

              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 Arzhang
Navai at 202-551-4676 with any questions.




                          Sincerely,


                          Division of Corporation Finance

                          Office of Life Sciences
       cc:                                              Nikki Fang, Esq.