United States securities and exchange commission logo November 30, 2022 D. James Carpenter Chairman RMG Acquisition Corp. III 57 Ocean, Suite 403 5775 Collins Avenue Miami Beach, FL 33140 Re: RMG Acquisition Corp. III Preliminary Proxy Statement on Schedule 14A Filed November 17, 2022 File No. 001-40013 Dear D. James Carpenter: We have completed our review of your filing. 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. Sincerely, Division of Corporation Finance Office of Real Estate & Construction cc: David S. Allinson, Esq.