The Varuna River is a minor tributary of the Ganges River. It is named after the god Varuna.
The Varuna rises at 25°27′N 82°18′E / 25.450°N 82.300°E near Bhadohi, flows east-to-southeast for some 100 km, and joins the Ganges at 25°19′46″N 83°02′40″E / 25.32944°N 83.04444°E in Varanasi, just downstream of Varanasi. The name Varanasi itself is interpreted to be derived from the name of the river Varuna. The river demarcates the north end of Varanasi - the city that lies between Varuna and Assi Rivers.