Donguz (river)

The Donguz () is a river in Orenburg Oblast, Russia, left tributary of Ural River. It is long, and has a drainage basin of .
The settlement of Pervomaysky and the Donguz test site are by the river.
The outcrops on the banks of the river (Donguz Formation) are of interest for palaeontology, and a number of discoveries have been made there.