Ivan Semyonovich Kozlovsky; also referred to as Kozlovskiy or Kozlovskij; 24 March [O.S. 11 March] 1900 - 21 December 1993 was a Soviet lyric tenor and one of the most well known stars of Russian opera, as well a producer and director of his own opera company, and longtime teacher at the Moscow Conservatory. People's Artist of the USSR and Hero of Socialist Labour. According to Steven Kotkin, he was Joseph Stalin's favorite singer.