United States securities and exchange commission logo May 11, 2021 Robert D. Wright President and Chief Executive Officer Potbelly Corp. 111 N. Canal Street, Suite 325 Chicago, Illinois 60606 Re: Potbelly Corp. Registration Statement on Form S-3 Filed May 6, 2021 File No. 333-255845 Dear Mr. Wright: 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 Scott Anderegg at 202-551-3342 with any questions. Sincerely, Division of Corporation Finance Office of Trade & Services