William Fitch (born May 19, 1934 in Davenport, Iowa) is an American former NBA coach who has been successful in making teams playoff contenders throughout his coaching career. Before entering the professional ranks he coached college ball at the University of Minnesota, Bowling Green State University, the University of North Dakota, and his alma mater, Coe College. Fitch's teams twice qualified for the NCAA tournament. Fitch also coached the Cleveland Cavaliers, New Jersey Nets and Los Angeles Clippers. During his first year with the Cavaliers, the team lost its first 15 games.