January 6, 2020 Craig Safian Chief Financial Officer Gartner, Inc. 56 Top Gallant Road Stamford, CT 06904-2212 Re: Gartner, Inc. Form 10-K for the Year Ended December 31, 2018 Filed February 22, 2019 File No. 001-14443 Dear Mr. Safian: 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 Trade & Services