Mayn River

The Mayn (; , meaning "The Great River") is a river in Chukotka Autonomous Okrug (Magadan Oblast) in Russia, one of the major tributaries of the Anadyr. The length of the river is . The area of is drainage basin is . ==Course== It flows roughly northwards from its source in the small Maynskoe Lake, located in the northern part of the Parapol Valley, in the Penzhinsky Range of the Koryak Highlands. The river passes then through sparsely populated areas of the forest-tundra subzone of Chukotka. Finally it joins the right bank of the Anadyr.

The Mayn meets the Anadyr at Ust-Mayn in the mid-lower stretch of its course, in an area of wetlands and small lakes, about further upstream from the confluence of the Anadyr and the Belaya. All these rivers are frozen for about eight to nine months in a year between mid-October and the end of May.