Ulungur Lake is located in Fuhai County, Xinjiang, China.

It is an endorheic lake, though the Irtysh River flows towards the Arctic Ocean less than 4 km away to the northeast.

Between 1960 and 1987, the lake level dropped by 4.2 m, due to the increasing use of the river water for irrigation and other needs.

The main fish species in the lake are the common bream (Abrmais brama orientalis), Siberian dace (Leuciscus baicalensis), and the European perch (Perca fluviatilis).

The annual Lake Ulungur fish catch reached the record value of 4,500 tons in 1971, but has fallen since then, to more sustainable levels.