November 19, 2018 Mark A. Culhane Executive Vice President and Chief Financial Officer Teradata Corporation 17095 Via Del Campo San Diego, California 92127 Re: Teradata Corporation Form 10-K for Fiscal Year Ended December 31, 2017 Filed February 23, 2018 Form 10-Q for Quarterly Period Ended June 30, 2018 Filed August 6, 2018 File No. 001-33458 Dear Mr. Culhane: We have completed our review of your filings. 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 Information Technologies and Services