United States securities and exchange commission logo November 2, 2020 David Morris Chief Financial Officer RBB Bancorp 1055 Wilshire Boulevard Suite 1200 Los Angeles, California 90017 Re: RBB Bancorp Form 10-K for Fiscal Year Ended December 31, 2019 File No. 001-38149 Dear Mr. Morris: 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 Finance