This is a list of notable rivers of Mongolia, arranged geographically by river basin. The Mongolian words for river are (гол) and (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 (-ийн) or (-ын). For example, the Ider River's Mongolian name is (Идэрийн гол), equivalent to saying "the river of Ider".

Longest rivers

Flowing into the Arctic Ocean

Flowing into the Sea of Okhotsk (Pacific Ocean)

Flowing into endorheic basins

Hulun Lake

Ulaan Lake

Great Lakes Depression

Khar-Us Lake

Uvs Nuur Basin

Rivers draining into endorheic Uvs Lake, forming the drainage of the Uvs Lake Basin

Khyargas Lake

Dörgön Lake

Ulungur Lake