United States securities and exchange commission logo November 2, 2020 Brian Achenbach Chief Financial Officer MUSTANG BIO, INC. 377 Plantation Street Worcester, MA 01605 Re: MUSTANG BIO, INC. Registration Statement on Form S-3 Filed October 23, 2020 File No. 333-249657 Dear Mr. Achenbach: 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 Laura Crotty at 202-551-7614 with any questions. Sincerely, Division of Corporation Finance Office of Life Sciences cc: Mark F. McElreath