John Beilein (pronounced bee-line; born February 5, 1953) is an American college basketball coach and current men's basketball head coach at the University of Michigan. He is the 16th head coach of the Michigan Wolverines. The 2011–12 season is his fifth at Michigan, with whom he has a six-year contract. Beilein has won 567 career games at four-year universities (including games that were not at the Division I level) and 642 games including those at the junior-college level. He has previously coached the West Virginia Mountaineers (2002–2007), Richmond Spiders (1997–2002), Canisius College Golden Griffins (1992–1997) in Division I as well as Le Moyne College (1983–1992), Nazareth College (1982–1983) and Erie Community College (1978–1982).

Beilein is the only active collegiate coach to have achieved 20-win seasons at four different levels—junior college, NAIA, NCAA Division II and NCAA Division I. He has been recognized as Coach of the Year four times: in 1981 at Erie Community College, in 1988 at LeMoyne, in 1994 at Canisius, and in 1998 at Richmond. In addition, Beilein was the seventh of only eight coaches in history (along with Lefty Driesell, Jim Harrick, Lon Kruger, Rick Pitino, Tubby Smith, Eddie Sutton and later Tom Penders) to have taken four different schools to the NCAA Men's Division I Basketball Championship Tournament.