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                          June 29, 2023

       Michael D. Kandris
       Chief Executive Officer
       Alto Ingredients, Inc.
       1300 South Second Street
       Pekin, Illinois 61554

                                                        Re: Alto Ingredients,
Inc.
                                                            Registration
Statement on Form S-3
                                                            Filed June 23, 2023
                                                            File No. 333-272884

       Dear Michael D. Kandris:

              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 Benjamin
Richie at 202-551-7857 with any questions.




                          Sincerely,


                          Division of Corporation Finance

                          Office of Industrial Applications and

                          Services
       cc:                                              Larry A. Cerutti