Name College Years Reign Ref
Seretse Khama Balliol 1945 King of the BagammaNgwato people (1925); afterwards first President of Botswana (1966–1980)
Jigme Khesar Namgyal Wangchuck Magdalen 2000–? King of Bhutan (2006 onwards) [1]
Abdullah II of Jordan Pembroke King of Jordan (1999 onwards)
Sultan Ahmad Shah Worcester 1948–? King of Malaysia (1979–1984) and Sultan of Pahang (1979 onwards) [2]
Tuanku Abdul Halim Wadham –1954 King of Malaysia (1970–1975) and Sultan of Kedah (1958 onwards) [3]
Tuanku Jaafar Balliol King of Malaysia (1994–1999) and Yang di-Pertuan Besar of Negeri Sembilan (1968 onwards)
William II of the Netherlands King of the Netherlands and Grand Duke of Luxembourg (1840–1849)
Harald V of Norway Balliol 1960–1962 King of Norway (1991 onwards) [4]
Olav V of Norway Balliol 1924–1926 King of Norway (1957–1991) [5][6]
Vajiravhud Christ Church 1900–1901 King of Siam (1910–1925) [7]
Andrew Bertie Christ Church Prince and Grand Master of the Sovereign Military Order of Malta (1988-2008) [8][9]
George Tupou V King of Tonga (2006-2012)