Michael W. Punke (born December 7, 1964) is an American author, attorney, academic, and policy analyst. He is a former Deputy United States Trade Representative and U.S. Ambassador to the World Trade Organization in Geneva, Switzerland. In 2017, he became vice president for public policy at Amazon Web Services. As an author, Punke is best known for writing The Revenant: A Novel of Revenge (2002), which was adapted into film as The Revenant (2015), directed by Alejandro González Iñárritu, with a screenplay by Iñárritu and Mark L. Smith, and starring Leonardo DiCaprio and Tom Hardy.