Mark Ein

American businessman (born 1964)

Mark David Ein is an American venture capitalist and sports entrepreneur. He is a limited partner of the National Football League (NFL) team Washington Commanders and is an investment partner in the English football club Leeds United and the Major League Baseball (MLB) team Baltimore Orioles. Ein founded the World TeamTennis (WTT) team Washington Kastles in 2008 and has chaired the DC Open tournament since 2019. He also owns the Washington City Paper, serves as chairman of the President's Export Council, and is a member of the Federal City Council, World Economic Forum, and Gridiron Club.