August 19, 2019 Michael McDonnell Executive Vice President and Chief Financial Officer IQVIA Holdings Inc. 83 Wooster Heights Road Danbury, Connecticut 06810 Re: IQVIA Holdings Inc. Form 10-K for the Fiscal Year Ended December 31, 2018 Filed February 19, 2019 File No. 001-35907 Dear Mr. McDonnell: 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 Beverages, Apparel and Mining