William Stein

William Stein may refer to:
 * William A. Stein (born 1974), computer programmer and mathematician
 * William Howard Stein (1911–1980), biochemist
 * Willie Stein (died 2009), television producer and songwriter
 * Bill Stein (born 1947), American baseball player
 * Bill Stein (American football) (1899–1983), American football offensive lineman