Oscar Rabin (born Oskar Yakovlevich Rabin [also transliterated as 'Rabine']) Russian: ????? ????????? ?????; Moscow, 2 January 1928 - Florence, 7 November 2018) was a major Russian painter and activist who defined the core of the Soviet Nonconformist Art movement, affecting the careers of countless painters and sculptors of that era and its aftermath.