The Tamir River (Mongolian: Тамир гол) is a river flowing through the valleys of the Khangai Mountains in Arkhangai Province, Mongolia.

The river is the namesake of the Mongolian literature classic by Chadraabalyn Lodoidamba, The Clear Tamir River (Mongolian: Тунгалаг тамир, romanized: Tungalag tamir).

[1] The southern Tamir starts about 25 km to the south-west in the Bulgan sum at the end of the Khairkhny mountain range.

[3] The Tamir is a main tributary of the Orkhon River, which it meets in Ögii Nuur sum, opposite to the namesake Ögii Lake.

This article related to a river in Mongolia is a stub.