SeAZ was a large engineering plant in Serpukhov, Moscow Oblast, Russia. From 1939 to 1995, the company was called SMZ and produced various cyclecars for use by disabled drivers, usually powered by IZh motorcycle engines. Between 1991 and 2008 it also produced Lada Oka microcars developed by AvtoVAZ. The company was declared bankrupt in 2013.

Serpukhov is a city in Moscow Oblast, Russia, located at the confluence of the Oka and the Nara Rivers, 99 kilometers south from Moscow and 72 kilometers from Moscow Ring Road on the Moscow—Simferopol highway. The Moscow—Tula railway passes through Serpukhov.