Uchur River (Russian: Учур) is a river in Khabarovsk Krai and Yakutia in Russia, a right tributary of the Aldan River (Lena's basin). The length of the river is 812 km. The area of its drainage basin is 113,000 km². The Uchur freezes up in November and breaks up in May. Its main tributaries are the Uyan, Tyrkan, Gonam, and Gynym Rivers.