Namesakes
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