Eretna (Turkish plural; Eretnaoğulları) was an Anatolian Turkish Beylik that succeeded the Ilkhanid rulers in Anatolia and that ruled in a large region extending between Kayseri, Sivas and Amasya in Central Anatolia between 1328-1381.
The Beylik's last ruler was replaced by his vizier Kadı Burhaneddin who reigned in the same region for another three decades, a period some consider as a continuation of the same institutional structure.
The dynasty's founder, Eretna, was an officer of Uygur origin in the service of Demirtaş, the Ilkhanid governor of Anatolia, and who revolted in 1326 to found his own dynasty.
Although short-lived, the Beylik of Eretna legated important works of architecture from its period of existence.