Tamir River
{{Short description|River in Arkhangai, Mongolia}}
{{Distinguish|Tarim River}}
{{Infobox river
| name = Tamir Gol
| native_name ={{native name|mn|Тамир гол}}
| name_other = Tamir River
| name_etymology = Mongolian: tamir = strength, vigor
| image = Tamir river near Tsesterleg.jpg
| image_size =
| image_caption = Tamir River near Tsetserleg, Arkhangai
| map =
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| subdivision_type1 = Country
| subdivision_name1 = Mongolia
| subdivision_type2 = Aimag
| subdivision_name2 = Arkhangai
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| subdivision_type5 = Major City
| subdivision_name5 = Tsetserleg
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| source1 = Northern Tamir
| source1_location = Ikh-Tamir sum
| source1_coordinates= {{coord|47|5|55|N|100|36|20|E|display=inline}}
| source1_elevation =
| source2 = Southern Tamir
| source2_location = Bulgan sum
| source2_coordinates= {{coord|46|55|40|N|100|49|35|E|display=inline}}
| source2_elevation =
| source_confluence =
| source_confluence_location = Battsengel sum
| source_confluence_coordinates= {{coord|47|46|10|N|102|1|0|E|display=inline}}
| source_confluence_elevation =
| mouth = Orkhon River
| mouth_location = Ögii Lake, Ögii Nuur sum
| mouth_coordinates = {{coord|47|47|30|N|102|36|40|E|display=inline,title}}
| mouth_elevation =
| progression = {{ROrkhon}}
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| extra = {{Infobox mapframe |wikidata=yes |zoom=6 |coord={{WikidataCoord|display=i}}}}
}}
The Tamir River ({{Langx|mn|Тамир гол}} {{IPA|mn|tʰɛ́mɪr ɢ̊ɔɬ|}}) 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 ({{Langx|mn|Тунгалаг тамир|translit=Tungalag tamir|label=none}}).
For most of its length, the Tamir is divided into two branches: the Northern Tamir ({{langx|mn|Хойт Тамир|translit=Khoit Tamir|label=none}}) and the Southern Tamir ({{langx|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 sum.{{Cite web
|url=http://loadmap.net/en/m8162
|title=Russian army map "100k--l47-034"
|publisher=Maps for the world
|accessdate=2015-01-06
}} The southern Tamir starts about 25 km to the south-west in the Bulgan sum at the end of the Khairkhnii mountain range.{{Cite web
|url=http://loadmap.net/en/m8174
|title=Russian army map "100k--l47-046"
|publisher=Maps for the world
|accessdate=2015-01-05
}} The two branches run a roughly north-eastern course up to their confluence at the sum center of Battsengel sum.{{Cite web
|url=http://loadmap.net/en/m8140
|title=Russian army map "100k--l47-012"
|publisher=Maps for the world
|accessdate=2015-01-05
}}
The Tamir is a main tributary of the Orkhon River, which it meets in Ögii Nuur sum, opposite to the namesake Ögii Lake.{{Cite web
|url=http://loadmap.net/en/m7981
|title=Russian army map "100k--l48-002"
|publisher=Maps for the world
|accessdate=2015-01-05
}}