William Carey Foster (April 1, 1936 – May 27, 2015) was an American college basketball coach who won over 500 games during a career that spanned 30 years.

Foster, a native of Palatka, Florida, compiled an overall record of 532–325 in 30 seasons.

He succeeded Tates Locke at Clemson University on April 9, 1975.

[1] Foster died of Parkinson's disease in Charlotte, North Carolina on May 27, 2015.

[2] He was one of two men's basketball head coaches named Bill Foster in the Atlantic Coast Conference from 1975 to 1980.