The Velikaya River, also known as Bolshaya and Onemen (Russian: Великая, Большая, Онемен), is a 556 km long river in Chukotka Autonomous Okrug in Russia. It flows north-eastwards from the Koryak Range through the Anadyrskiy Liman (the Anadyr River estuary) into the Bering Sea at the Gulf of Anadyr. The area of its drainage basin is 31,000 square kilometres (12,000 sq mi). Velikaya (Великая) translates to great in the Russian Language.