O Taryà Ân (; 856âÂÂ944) was a Korean nobleman from Naju during the Later Three Kingdoms period. He was the father of Queen Janghwa and the father in-law of Wang Kà Ân, the founder of the Goryeo dynasty, and the maternal grandfather of Hyejong of Goryeo, son of Queen Janghwa and Wang Kà Ân. O Taryà Ân was an early supporter of Wang Kà Ân, aiding him in the conquest of the Naju area.
O Taryà Ân was the son of O Pudon (). His family was thought to be wealthy maritime traders of non-aristocratic origins, similar to that of Wang Kà Ân's ancestors. The character of pu () in his father's name means wealth, symbolizing the wealth of Naju O clan. O Taryà Ân married the daughter of a local Silla sagan () Yà Ân Wi (), who was presumably from a powerful local hojok family.