BelOMO or Belorusskoe Optiko-Mechanichesckoye Obyedinenie (Belarus Optical & Mechanical Enterprise) was founded in Minsk in 1971 in Byelorussian SSR, Soviet Union, now Belarus. The main plant of this enterprise is the Minskiy Mechanichesckiy Zavod imeni S.I. Vavilova (Minsk Mechanical Works named by S.I. Vavilov), founded in 1957.
At first, BelOMO made photographic equipment and lens-making machinery for state use. It now manufactures military and consumer optical products. During the 1980s it produced the now-discontinued Agat-18 and Agat-18K half-frame 35mm cameras, still popular among lomographic photographers.