August 8, 2019

Ernest Loumaye
Chief Executive Officer
ObsEva SA
Chemin des Aulx, 12
1228 Plan-les-Ouates
Geneva, Switzerland

       Re: ObsEva SA
           Registration Statement on Form F-3
           Filed August 7, 2019
           File No. 333-233069

Dear Mr. Loumaye:

       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 Donald Field at 202-551-3680 with any questions.



                                                            Sincerely,

                                                            Division of
Corporation Finance
                                                            Office of
Healthcare & Insurance