Byokyo (; , Bökö) is a rural locality (a selo), the administrative centre of and one of two settlements, in addition to Soto, in Dogdoginsky Rural Okrug of Megino-Kangalassky District in the Sakha Republic, Russia. It is located from Nizhny Bestyakh, the administrative center of the district. Its population as of the 2002 Census was 352.