Cosmas (Hungarian: Kozma; died after 1222) was a Hungarian prelate in the first half of the 13th century, who served as Bishop of Győr from around 1219 to 1222.
Cosmas was born into an ethnic Hungarian medium landowner noble family originated from Somogy County.
[1] Prior to his bishopric, he was a canon or provost of the Székesfehérvár Chapter, an important place of authentication in the kingdom.
Consequently, he was presumably a royal chaplain during the reign of Andrew II of Hungary.
[4] Following that he resigned from his office and retired to the Fehérvár Chapter, where he lived for years,[5] according to a letter of Pope Honorius III.