Mark Ein

Mark Ein
Ein in 2024
Born	Mark David Ein (1964-12-31) December 31, 1964 (age 59) Chevy Chase, Maryland, U.S.
Education	Wharton School (BS, 1987) Harvard Business School (MBA, 1992)
Occupations	Venture capitalist sports entrepreneur
Organizations	Federal City Council World Economic Forum Gridiron Club President's Export Council
Title	Owner Washington Kastles (WTT) Washington Justice (OWL) Washington City Paper CEO Venturehouse Group Capitol Investment DC Open Limited partner Washington Commanders (NFL)
Board member of	Kastle Systems United States Tennis Association (USTA)
Spouse	Sally Stiebel ​ (m. 2013)​
Awards	Key to D.C. Mid-Atlantic Tennis Hall of Fame Outstanding Public Service in Professional Sports Washington Business Hall of Fame

Mark David Ein (born December 31, 1964) is an American venture capitalist and sports entrepreneur. He owns the Washington City Paper and is a limited partner of the Washington Commanders of the National Football League (NFL). An enthusiast of tennis, Ein briefly played semi-professionally in his 40s, founded the World TeamTennis (WTT) team Washington Kastles in 2008, and has chaired the DC Open since 2019. He is also chairman of the President's Export Council and a member of the Federal City Council, World Economic Forum, and Gridiron Club.