William Francis "Bo" Ryan, Jr. (born December 20, 1947) is an American college basketball coach and former player. He is the current head coach of the University of Wisconsin–Madison Badgers men's basketball team, a position he has held since 2001. Ryan served as the head men's basketball coach at the University of Wisconsin–Platteville from 1984 to 1999 and at the University of Wisconsin–Milwaukee from 1999 to 2001. On February 14, 2015, Bo Ryan was named a finalist to be considered for election in the Class of 2015 for the Naismith Memorial Basketball Hall of Fame. On June 29, 2015, Ryan announced that he would retire after the 2015-16 season. A month and a half later, Ryan announced he's "not totally sure" whether or not he will retire.