United States securities and exchange commission logo December 21, 2021 Raj Mehra Chief Executive Officer Seelos Therapeutics, Inc. 300 Park Avenue, 2nd Floor New York, NY 10022 Re: SEELOS THERAPEUTICS, INC. Registration Statement on Form S-3 Filed December 13, 2021 File No. 333-261621 Dear Dr. Mehra: 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 Jordan Nimitz at 202-551-5831 with any questions. Sincerely, Division of Corporation Finance Office of Life Sciences