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 city Monbetsu District, Hokkaidō (紋別郡), a district Monbetsu, Hokkaidō (Hidaka) (門別町), a former town in Hidaka Subprefecture now part of the town Hidaka, Hokkaidō
See also Mountains in Hokkaidō: Mount Monbetsu (紋別岳), a mountain on the shore of Lake Shikotsu in Chitose City Mount Date Monbetsu (伊達紋別岳), also referred to as Mount Monbetsu, a mountain, in Date City