Zaraysk is a town and the administrative center of Zaraysky District in Moscow Oblast, Russia, located about 162 kilometers (101 mi) southeast from Moscow. Population: 24,645 (2010 Russian census); 25,093 (2002 Census); 26,958 (1989 Soviet census).

The Zaraysk Kremlin is a rectangular fortified citadel, built at the behest of Vasili III of Moscow between 1528 and 1531. The town of Zaraysk is located between Moscow and Ryazan.