W. G. G. Duncan Smith, English captain and pilot (d. 1996)

Group Captain Wilfrid George Gerald Duncan Smith, (28 May 1914 – 11 December 1996) was a Royal Air Force flying ace of the Second World War. He was the father of Iain Duncan Smith, a Member of Parliament (MP) since 1992 and Leader of the Conservative Party from 2001 to 2003.