William Rankin may refer to:
William Rankin (1920–2009), aviator and the only known survivor of falling through a thunderstorm cloud William Rankin (screenwriter) (1900–1966), American screenwriter of I've Got Your Number William Rankin (Medal of Honor), on List of Medal of Honor recipients for the Indian Wars William Rankin (boxer) (1898–1967), Scottish-Canadian featherweight boxer William Boyd Rankin, cricketer Willie Rankin (footballer, born 1895) (1895–1950), Scottish footballer with Motherwell, Cowdenbeath, Clyde Willie Rankin (footballer, born 1900) (1900–1968), Scottish footballer with Dundee, Blackburn, Charlton
See also Macquorn Rankine (William John Macquorn Rankine, 1820–1872), Scottish engineer William Rankins ( 1590s), English writer