Ottokar is the medieval German form of the Germanic name Audovacar.

People with the name Ottokar include: Two kings of Bohemia, members of the Přemyslid dynasty Ottokar I of Bohemia (–1230) Ottokar II of Bohemia (–1278) Four Styrian margraves, members of the Otakar dynasty Ottokar I of Styria (died 1075) Ottokar II of Styria (died 1122) Ottokar III of Styria (died 1164) Ottokar IV, Duke of Styria (1163–1192) Ottokar Chiari (1853–1918), Austrian laryngologist Ottokar Czernin (1872–1932), Austro-Hungarian diplomat Ottokar Domma (1924–2007), German journalist and writer Ottokar Fischer (1873–1940), Austrian magician Ottokar Lorenz (1832–1904), Austrian-German historian and genealogist Ottokar Nováček (1866–1900), Austro-Hungarian violinist Ottokár Prohászka (1858–1927), Hungarian Roman Catholic theologian and bishop Ottokar Runze (1925–2018), German film producer Ottokar Tumlirz (1856–1928), Austrian physicist Ottokar Weise (), German Olympic sailor

Fictional characters King Ottokar IV of Syldavia, from the Tintin comic book King Ottokar's Sceptre The prince in Carl Maria von Weber's opera Der Freischütz

See also Otakar King Ottocar: His Rise and Fall, a play by Franz Grillparzer