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                    July 31, 2020

       Sheri L. Savage
       Chief Financial Officer
       Ultra Clean Holdings, Inc.
       26462 Corporate Avenue
       Hayward, CA 94545

                                                        Re: Ultra Clean
Holdings, Inc.
                                                            Form 10-K for they
Year Ended December 31, 2019
                                                            Filed March 11,
2020
                                                            File No. 000-50646

       Dear Ms. Savage:

              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 Manufacturing
       cc:                                              K. Uhrinova