Ruza (Russian: Ру́за) is a town and the administrative center of Ruzsky District in Moscow Oblast, Russia, located on the Ruza River (a tributary of the Moskva River) 100 kilometers (62 mi) west of Moscow.

It became a part of the Grand Duchy of Moscow in the early 16th century.

The town was a fortress which protected Moscow from the west.

During World War II, Ruza was occupied by the Germans from October 25, 1941, to January 17, 1942.

[1] As an administrative division, it is incorporated within Ruzsky District as the Town of Ruza.