''''Mieczys\u0142aw Weinberg''' (also '''Moisey''' or '''Moishe Vainberg''', '''Moisey Samuilovich Vaynberg'''; ; ; 8 December 1919 – 26 February 1996) was a Soviet composer of Polish-Jewish origin. From 1939 he lived in the Soviet Union and Russia and lost most of his family in the Holocaust.

He left a large body of work that included twenty-two symphonies and seventeen string quartets. According to one reviewer, he ranked as "the third great Soviet composer, along with Prokofiev and Shostakovich".Steve Schwarz, [ review of ''The Golden Key''] on Classical Net Review, 2004.