Arigiin River
{{Short description|River in Khövsgöl, Mongolia}}
{{Infobox river
| name = Arigiin River
| native_name ={{native name|mn|Аригийн гол}}
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| subdivision_type1 = Country
| subdivision_name1 = Mongolia
| subdivision_type2 = Aimags
| subdivision_name2 = Khövsgöl aimag
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| source1 = Döm Mountain
| source1_location = Chandmani-Öndör sum
| source1_coordinates= {{coord|50|13|20|N|100|37|15|E|display=inline}}
| source1_elevation =
| mouth = Üür River
| mouth_location = Tsagaan-Üür sum
| mouth_coordinates = {{coord|50|30|50|N|101|34|50|E|display=inline,title}}
| mouth_elevation =
| progression = Üür River→ {{REgiin Gol}}
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Arigiin River ({{langx|mn|Аригийн гол}}) is a river in the Khövsgöl aimag of Mongolia.
It starts next to Döm Mountain in the confluence of two smaller rivers at the border between Alag-Erdene and Chandmani-Öndör sums, continuing through the latter.{{Cite web
|url=http://loadmap.net/en/m4668
|title=Russian army map "100k--m47-070" (source)
|publisher=Maps for the world
|accessdate=2015-01-04
}}
It discharges into the Üür River next to the Tsagaan-Üür sum center.{{Cite web
|url=http://loadmap.net/en/m4328
|title=Russian army map "100k--m47-060" (discharge)
|publisher=Maps for the world
|accessdate=2015-01-04
}}