Boris Osipovich Sirpo (April 3, 1893 - January 25, 1967) was a Russian-born Finnish violinist, conductor, composer, and music educator.

He studied music throughout Europe, including under Jean Sibelius, before making his debut in the Helsinki Philharmonic Orchestra in 1912.

[1] Sirpo established the Viipuri Conservatory ("Viipurin Musiikkiopisto")[2] in Vyborg in 1918, and served as its director until 1939.

[5][6] With the advent of the Winter War, the Viipuri Conservatory was destroyed,[1] and Sirpo and Haitto left the city of Vyborg and emigrated to the United States, arriving on March 13, 1940.

[1][7] The Viipuri Conservatory that Sirpo established was rebuilt and relocated to the city of Lahti, Finland, after World War II.