William Quinn Buckner – born August 20, 1954 – is an American former professional basketball player and coach.
He played collegiate basketball for the Indiana University Hoosiers, and won a national championship in 1976.
He was a captain of both the last undefeated NCAA Division I basketball champion and the 1976 Olympics gold medal team.
Buckner was selected by the Milwaukee Bucks with the 7th pick of the 1976 NBA draft.
He had a ten-year NBA career for three teams (the Bucks, the Boston Celtics, and the Indiana Pacers).
In 1984, he won an NBA title with the Celtics.