Emil Albertovich Cooper (ru: Эмиль Альбертович Купер), also known as Emil Kuper (December 13 [OS December 1], 1877, Kherson, Ukraine, then in Russian Empire – November 16, 1960, New York) was a Russian conductor and violinist, of English ancestry. He premiered Rimsky-Korsakov's opera The Golden Cockerel in 1909. Kuper / Cooper conducted the first performance of Reinhold Glière's epic Third Symphony, 'Ilya of Murom', on 23 March 1912. He also conducted Rimsky-Korsakov's Kashchey the Immortal in January 1917 at the Bolshoi Theatre in Moscow.