Arigiin River () 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-ÃÂndör sums, continuing through the latter. It discharges into the ÃÂür River next to the Tsagaan-ÃÂür sum center.