Namesakes
Norwegian Kings and Queens:
2 kings
King Oskar I 1844-1859 
King Oskar II 1872-1905
Notable Actors and Entertainers:
2 actors
Oscar Homolka (a.k.a. Oskar) 1898-1978
Oskar Werner 1922-1984
Notable Artists:
1 painter
Oskar Kokoschka 1886-1980
Notable Businesspeople:
1 businessperson
Oskar Schindler 1908-1974
Olympic Medalists:
3 bronze, 1 bronze/silver/gold, 1 gold
(bronze/silver/gold) Albin Stenroos (middle name Oskar) 1912; 1924 10000 m; cross country team; marathon
(bronze) Fred Warngård (a.k.a. Oskar) 1936 hammer throw
(bronze) Tuomas Grönman (middle name Oskar) 1998 ice hockey
(gold) Oskar Deecke 2012 field hockey
(bronze) Oskar Eriksson 2014 curling
Other Royalty:
2 princes
Oskar of Prussia 1888-1958 Prussia
Friedrich Leopold of Prussia (middle name Oskar) 1895-1959 Prussia