Ottokar I of Styria

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Ottokar I
Margrave of Styria
Donor portrait of Margrave Ottokar and his sister Abbess Ata, Traunkirchen Abbey
Died	(1075-03-29)29 March 1075 Rome
Noble family	Otakars
Spouse(s)	Willibirg of Eppenstein
Father	Count Otakar V in the Chiemgau
Mother	(?), Countess of Wels-Lambach

Ottokar I, also Otakar (died 29 March 1075) was count in the Bavarian Chiemgau and Margrave of Styria from 1056 until his death. He became progenitor of the dynasty of the Otakars.