Austrian Dukes and Emperors: 1 duke
Duke Ottokar II (a.k.a. Otakar)   1251-1276  
Bohemian Kings: 1 king
King Ottokar II (a.k.a. Otakar)   1253-1278  
Notable Writers: 1 poet
Otokar Březina (a.k.a. Otakar)   1868-1929  
Olympic Medalists: 2 bronze
(bronze) Otakar Vindyš   1920   ice hockey  
(bronze) Otakar Janecký   1992   ice hockey