Namesakes
Austrian Dukes and Emperors:
1 duke
Duke Ottokar II 1251-1276 
Bohemian Kings:
2 kings
King Ottokar I 1198-1230
King Ottokar II 1253-1278
Notable Politicians and Statespeople:
1 politician
Boris Dittrich (a.k.a. Ottokar) 1955-