William Oliver Hamilton (c. 1876 – December 29, 1951) was an American basketball coach, track coach, and college athletics administrator. He served as the third head basketball coach at the University of Kansas, coaching the Jayhawks from 1909 to 1919.
Hamilton later worked as a car dealer in Lawrence, Kansas. He died there of December 29, 1951 at the age of 75.
National champion Postseason invitational champion Conference regular season champion Conference regular season and conference tournament champion Division regular season champion Division regular season and conference tournament champion Conference tournament champion