William Robert "Slick" Leonard (July 17, 1932 – April 13, 2021) was an American professional basketball player, coach and color commentator. He played college basketball for the Indiana Hoosiers, where he was a two-time All-American and a member of their national championship squad in 1953. After playing professionally in the National Basketball Association (NBA), Leonard coached the Indiana Pacers to three American Basketball Association (ABA) championships. He was inducted into the Naismith Memorial Basketball Hall of Fame as a coach in 2014.