The Uchur (Russian: Учур; Yakut: Учур, Uçur) is a river in Khabarovsk Krai and Yakutia in Russia, a right tributary of the Aldan (Lena's basin).

The area of its drainage basin is 113,000 square kilometres (44,000 sq mi).

Its main tributaries are the Uyan, Tyrkan, Gonam, and Gynym.

The Gynym, a tributary of the Uchur, marks the southern border of the Sunnagyn Range.

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