Fabien Sevitzky (September 29, 1893 in Vyshny Volochyok – February 3, 1967 in Athens) was a Russian-born American conductor. He was the nephew of renowned double-bass virtuoso and longtime Boston Symphony Orchestra conductor Serge Koussevitzky. Sevitzky became music director of the Indianapolis Symphony Orchestra in 1937 after he first conducted it in winter 1936, and remained in the position until 1955. He led the orchestra in a series of recordings for RCA Victor from 1941 to 1953, which were issued on 78-rpm and 33-1/3-rpm discs. The orchestra was recorded in the Murat Theatre. Among the more unusual recordings were of Tchaikovsky's first symphony (recorded March 19, 1946)  and Manfred (recorded January 27, 1942).