William Samuel Frieder (born March 3, 1942) is a former basketball coach at Michigan (1981–1989) and Arizona State (1989–1997). Frieder's 1985–86 team was the last Michigan team to win a Big Ten Championship until the 2011–12 team. Frieder resigned from Arizona State in 1997 following a point-shaving scandal that involved games from the school’s 1994 season.