Bill Foster may refer to:
Sports Bill Foster (baseball) (1904–1978), Negro leagues baseball player Bill Foster (basketball, born 1929) (1929–2016), college basketball head coach at Rutgers, Utah, Duke, South Carolina, and Northwestern Bill Foster (basketball, born 1936) (1936–2015), college basketball head coach at Charlotte, Miami, Clemson, and Virginia Tech
Politics Bill I. Foster (1946–2025), American politician, Missouri state senator Bill Foster (politician) (born 1955), U.S. Congressman (D-IL), physicist Bill Foster (mayor) (born 1963), mayor of St. Petersburg, Florida
Entertainment Bill Foster (director) (1932–2011), television director Bill Foster (character), Marvel Comics superhero known variously as Black Goliath, Giant-Man, and Goliath
See also Billy Foster (1937–1967), Canadian racecar driver William Foster (disambiguation)