The Rezh () is a river in Sverdlovsk Oblast, Russia. At its confluence with the Neyva, the Nitsa (a tributary of the Tura, Ob's drainage basin) is formed. It is long, with a drainage basin of .
The Rezh has its sources in the central Ural Mountains, and flows towards the northeast towards its confluence with the Neyva. The largest town by the river is Rezh.