| Tamir River | |
| Name Etymology: | Mongolian tamir = strength, vigor |
| Subdivision Type1: | Country |
| Subdivision Name1: | Mongolia |
| Subdivision Type2: | Aimag |
| Subdivision Name2: | Arkhangai |
| Subdivision Type5: | Major City |
| Subdivision Name5: | Tsetserleg |
| Source1: | Northern Tamir |
| Source1 Location: | Ikh-Tamir |
| Source1 Coordinates: | 47.0986°N 100.6056°W |
| Source2: | Southern Tamir |
| Source2 Location: | Bulgan |
| Source2 Coordinates: | 46.9278°N 100.8264°W |
| Source Confluence Location: | Battsengel |
| Source Confluence Coordinates: | 47.7694°N 102.0167°W |
| Mouth: | Orkhon River |
| Mouth Location: | Ögii Lake, Ögiinuur |
| Mouth Coordinates: | 47.7917°N 102.6111°W |
| Mapframe-Zoom: | 6 |
The Tamir River (pronounced as /mn/) 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 Chadraabaliin Lodoidamba, The Clear Tamir River .
For most of its length, the Tamir is divided into two branches: the Northern Tamir (mn|Хойд Тамир|translit=Khoid Tamir|label=none) and the Southern Tamir (mn|Урд Тамир|translit=Urd Tamir|label=none).
The Northern Tamir starts between the Shalkhagiin Khoit mountain range and the Togoo Mountain in the Ikh-Tamir.[1] The southern Tamir starts about 25 km to the south-west in the Bulgan at the end of the Khairkhnii mountain range.[2] The two branches run a roughly north-eastern course up to their confluence at the district center of Battsengel.[3]
The Tamir is a main tributary of the Orkhon River, which it meets in Ögii Nuur, opposite to the namesake Ögii Lake.[4]
