SEC Exhibit

We consent to the incorporation by reference in the Registration Statements (File Nos. 333-197041, 333-120312, and 333-119309) on Form S-8 of NewMarket Corporation of our report dated May 16, 2016, with respect to the statements of net assets available for benefits of the Savings Plan for the Employees of NewMarket Corporation and Affiliates as of December 31, 2015 and 2014, the related statements of changes in net assets available for benefits for the years then ended, and the related supplemental schedule of Schedule H, line 4i - schedule of assets (held at end of year) as of December 31, 2015, which appear in the December 31, 2015 annual report on Form 11-K of the Savings Plan for the Employees of NewMarket Corporation and Affiliates.