William Farley
William Farley may refer to:

William Farley (director), American film director
William Farley (Medal of Honor) (1835–?), Union Navy sailor and Medal of Honor recipient
William F. Farley (born 1942), owner of private equity firm Farley Industries
William Wallace Farley (1874–1952), New York Democratic state chairman
Bill Farley (1944–2018), American swimming coach and swimmer