Ilya Aleksandrovich Musin (Russian: Илья́ Алекса́ндрович Му́син, IPA: [ɪˈlʲja ɐlʲɪˈksandrəvʲɪtɕ ˈmusʲɪn]; 6 January 1904 [O.S. 24 December 1903] – 6 June 1999) was a Soviet and Russian conductor, music teacher and a theorist of conducting.