This is a list of notable rivers of Mongolia, arranged geographically by river basin.
The Mongolian words for river are gol (гол) and mörön (мөрөн), with the latter usually used for larger rivers. The Mongolian names also occasionally have a genitive construction, with the name of the river having the suffix -iin (-ийн) or -yn (-ын). For example, the Ider River's Mongolian name is Ideriin gol (Идэрийн гол), equivalent to saying "the river of Ider".