Stefan M. Selig (born 1963) is an American investment banker, and past Under Secretary of Commerce for International Trade at the U.S. Department of Commerce from June 2014 to June 2016. In his role, he was responsible for promoting trade and investment to strengthen the competitiveness of U.S. industry and "improve the global business environment". He advocated for the Trans-Pacific Partnership, negotiated the Transatlantic Trade and Investment Partnership and expanded SelectUSA.