Phillip Reginald Witherspoon (born February 21, 1961) is the head coach of the Canisius College men's basketball team and the former head coach of the University at Buffalo men's college basketball team. Witherspoon played college basketball at Erie Community College under John Beilein and then at Wheeling Jesuit under Jim O'Brien. In May 2016, Witherspoon was hired to replace the retiring Jim Baron at Canisius College.