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                              November 23, 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 reviewed your filing and have the following comment. In
our comment, we may
       ask you to provide us with information so we may better understand your
disclosure.

              Please respond to this comment within ten business days by
providing the requested
       information or advise us as soon as possible when you will respond. If
you do not believe our
       comment applies to your facts and circumstances, please tell us why in
your response.

                                                        After reviewing your
response to this comment, we may have additional comments.

       Preliminary Proxy Statement on Schedule 14A filed November 17, 2022

       General

   1.                                                   With a view toward
disclosure, please tell us whether your sponsor is, is controlled by, or
                                                        has substantial ties
with a non-U.S. person. If so, also include risk factor disclosure that
                                                        addresses how this fact
could impact your ability to complete your initial business
                                                        combination. For
instance, discuss the risk to investors that you may not be able to
                                                        complete an initial
business combination with a U.S. target company should the
                                                        transaction be subject
to review by a U.S. government entity, such as the Committee on
                                                        Foreign Investment in
the United States (CFIUS), or ultimately prohibited. Disclose that
                                                        as a result, the pool
of potential targets with which you could complete an initial business
                                                        combination may be
limited. Further, disclose that the time necessary for government
                                                        review of the
transaction or a decision to prohibit the transaction could prevent you from
                                                        completing an initial
business combination and require you to liquidate. Disclose the
 D. James Carpenter
RMG Acquisition Corp. III
November 23, 2022
Page 2
      consequences of liquidation to investors, such as the losses of the
investment opportunity
      in a target company, any price appreciation in the combined company, and
the warrants,
      which would expire worthless.
        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 Kibum Park at 202-551-6836 or Jeffrey Gabor at
202-551-2544 with any
questions.



                                                           Sincerely,
FirstName LastNameD. James Carpenter
                                                           Division of
Corporation Finance
Comapany NameRMG Acquisition Corp. III
                                                           Office of Real
Estate & Construction
November 23, 2022 Page 2
cc:       David S. Allinson, Esq.
FirstName LastName