Namesakes
Finnish Presidents and Prime Ministers:
1 president
(president) Carl Gustaf Emil Mannerheim 1944-1946 
Nobel Prize Winners:
1 physics
(physics) Gustaf Dalén 1912
Notable Actors and Entertainers:
1 actor
Gustaf Skarsgård 1980-
Notable Artists:
1 drawer, 1 painter
Gustaf Fjæstad 1868-1948
Gustaf Tenggren 1896-1970
Notable Military Figures:
1 commander
Carl Gustaf Emil Mannerheim 1867-1951
Notable Politicians and Statespeople:
1 statesperson
Gustaf Adolf Reuterholm 1756-1813
Notable Scientists and Inventors:
1 inventor
Gustaf Dalén 1869-1937
Olympic Medalists:
4 bronze, 3 silver, 1 gold
(bronze) Gustaf Blomgren 1912 diving - platform
(gold) Gustaf Lindblom 1912 triple jump
(silver) Gustaf Adolf Boltenstern Sr. 1912 equestrian
(bronze) Gustaf Mattsson 1920 cross country team
(silver) Gustaf Wejnarth 1924 4x400 m relay
(bronze) Bertil Albertsson (a.k.a. Gustaf) 1948 10000 m
(bronze) Gustaf Jansson 1952 marathon
(silver) Kjell Svensson (a.k.a. Gustaf) 1964 ice hockey
Other Royalty:
2 princes
Gustaf Adolf of Sweden 1906-1947 Sweden
Nicolas of Sweden (a.k.a. Gustaf) 2015- Sweden
Swedish Kings and Queens:
3 kings
King Gustav V (a.k.a. Gustaf) 1907-1950
King Gustaf VI Adolf 1950-1973
King Carl XVI Gustaf 1973-
Swedish Prime Ministers:
4 prime ministers
Gustaf Åkerhielm 1889-1891
Erik Gustaf Boström 1891-1900; 1902-1905
Carl Swartz (a.k.a. Gustaf) 1917
Carl Gustaf Ekman 1926-1928; 1930-1932