Protvino (Russian: Протвино́) is a town in Moscow Oblast, Russia, located about 100 kilometers (62 mi) south of Moscow and 15 kilometers (9.3 mi) west of Serpukhov, on the left bank of the Protva River. Population: 37,308 (2010 Census); 36,175 (2002 Census); 34,520 (1989 Census).