William Dwyer may refer to:William Dwyer (1887–1951), Irish independent politician Bill Dwyer (mobster) (1883–1946), American Prohibition-era gangster Bil Dwyer (1907–1987), American cartoonist and humorist William Lee Dwyer (1929–2002), U.S. federal judge Ubi Dwyer, Windsor Free Festival organiser Bil Dwyer, American actor and comedian William A. Dwyer Jr. (1914–1982), American lawyer, judge, and politician from Philadelphia William Gerard Dwyer, American mathematician Bill Dwyer (sprinter), winner of the 60 yards at the 1949 USA Indoor Track and Field Championships Bill Dwyer (1887–1943), English comedian in the double act Clapham and Dwyer