Anyuy River (Russian: река Аню́й), also known as Onyuy River (Онюй) or Dondon River (Дондон) is a river in the Khabarovsk Krai in Russia. It is a right tributary of the Amur River. It originates on slope of Tordoki Yani in the Sikhote-Alin mountain range, and falls into the Amur between Khabarovsk and Komsomolsk-on-Amur.