Sviatoslav Nikolayevich Knushevitsky (also seen as Knushevitzky; 6 January 1908 [O.S. 24 December 1907] – 19 February 1963) was a Soviet-Russian classical cellist. He was particularly noted for his partnership with the violinist David Oistrakh and the pianist Lev Oborin in a renowned piano trio from 1940 until his death. After Mstislav Rostropovich and Daniil Shafran, he is spoken of as one of the pre-eminent Russian cellists of the 20th century. 　　Sviatoslav Knushevitsky was born at Petrovsk, Saratov Oblast, on 6 January 1908 [O.S. 24 December 1907]. He studied at the Moscow Conservatory with Semyon Kozolupov, graduating with a gold medal. He joined the Bolshoi Theatre Orchestra in 1929, remaining their principal cellist until 1943. 　　In 1933 Knushevitsky won First Prize at the Аll-Union Music Competition. In 1940 he joined in partnership with the violinist David Oistrakh and the pianist Lev Oborin in a renowned piano trio, often referred to as the Oistrakh Trio, which concertised and recorded a great deal in many countries. He also joined a string quartet with Oistrakh, Pyotr Bondarenko and Mikhail Terian, known as the Beethoven Quartet. His sonata performances with Oistrakh were considered the equal in their day of the later duo of Sviatoslav Richter and Mstislav Rostropovich. 　　In 1941 Knushevitsky joined the staff of the Moscow Conservatory, becoming a professor in 1950. From 1954 to 1959 he was chair of cello and double bass studies. His pupils there included the cellists Stefan Popov, Mikhail Khomitser and Yevgeny Altman, and the double bassist Rodion Azarkhin. 　　Other composers who wrote for him were Sergei Vasilenko and Alexander Goedicke. His repertoire included mainstream works from concertos and chamber works through to smaller pieces and arrangements, along with contemporary and rarer works such as the Richard Strauss Cello Sonata and the Solo Cello Suites of Max Reger.