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:
6 bronze, 3 silver, 1 gold
(bronze) Gustaf Blomgren 1912 diving - platform
(bronze) Gösta Holmér 1912 decathlon
(gold) Gustaf Lindblom 1912 triple jump
(silver) Gustaf Adolf Boltenstern Sr. 1912 equestrian
(bronze) Gustaf Mattsson 1920 cross country team
(bronze) Bertil Ohlson (a.k.a. Gustaf) 1920 decathlon
(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