King Yunan is a fictional king of one of the ancient Persian cities, in the province of Zuman, now modern Armenia who appears in The tale of the vizier and the Sage Duban. At the start of the story, Yunan is suffering from leprosy but he is cured by Duban the physician whom he rewards greatly. This makes Yunan's vizier becomes jealous and he persuades the King that Duban wants to overthrow him. At first Yunan doesn’t believe this and tells his vizier the Tale of the Husband and the Parrot to which the vizier responds by telling the Tale of the Prince and the Ogress. This convinces Yunan that Duban is guilty and he has him executed. Yunan later dies after reading a book of Duban's, the pages of which had been poisoned.