Monbetsu is the Japanese name of several places in Hokkaidō, Japan. It originates from the Ainu word mo-pet, meaning quiet river.
In Okhotsk Subprefecture:Monbetsu, Hokkaidō (紋別市), a cityMonbetsu District, Hokkaidō (紋別郡), a districtMonbetsu, Hokkaidō (Hidaka) (門別町), a former town in Hidaka Subprefecture now part of the town Hidaka, Hokkaidō reference