William J. Reinhart (August 2, 1896 – February 14, 1971) was an American college basketball, football, and baseball coach at the George Washington University, the University of Oregon, and the United States Merchant Marine Academy.

[1] At George Washington, he compiled a 319–237 record in basketball, or .574 winning percentage, including a 23–3 season in 1953–54.

[2] Players he coached at George Washington included future Basketball Hall of Famer Red Auerbach and future National Basketball Association (NBA) players Joe Holup, Corky Devlin and Gene Guarilia[2] and at Oregon he coached Howard Hobson.

Auerbach said Reinhart's coaching and fast break offenses were "15 years ahead of their time.

Conference tournament champion Pound sign (#) denotes interim head coach.