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