The Sopo River is a river in South Sudan's state of Northern Bahr el Ghazal. It joins the Pongo River to form the Lol River at Hujayni, due west from the state capital of Aweil. The river flows through the similarly named town of Sopo. The Kuru River is its most significant tributary.
Coordinates: 8°51′00″N 26°11′00″E / 8.85°N 26.1833°E