 Ust-Yansky District

Ust-Yansky District (; , "Usuyana uluuha", ) is an administrative and municipal district (raion, or "ulus"), one of the thirty-four in the Sakha Republic, Russia.It is located in the north of the republic in the Yana River delta on the coast of the Laptev Sea and borders with Allaikhovsky and Abyysky Districts in the east, Momsky District in the south, Verkhoyansky District in the southwest, and with Bulunsky District in the west.