Issay Alexandrovich Dobrowen (Russian: Исай Александрович Добровейн; 27 February [O.S. 15 February] 1891 in Nizhny Novgorod, Russian Empire – 9 December 1953, Oslo, Norway), born Itschok Zorachovitch Barabeitchik, was a Russian/Soviet-Norwegian pianist, composer and conductor. He left the Soviet Union in 1922 and became a Norwegian citizen in 1929.
He studied at the Moscow Conservatory, his teachers including Konstantin Igumnov and Sergei Taneyev, graduating with a gold medal. He taught from 1917–1921 at the Moscow Philharmonic Conservatory. He once played Beethoven's Sonata Appassionata to Vladimir Lenin, whose favorite piece of music this was. Dobrowen directed the first German performance of Mussorgsky's Boris Godunov (Dresden, 1922). Dobrowen went on to conduct the Oslo Philharmonic orchestra (1928–31), at the Sofia Opera (1927–28), and the San Francisco Symphony (1931–34) and the Gothenburg Symphony (1941–53) orchestras.
Dobrowen worked with both Nikolai Medtner and Artur Schnabel, among other well-known musicians. He was also a close friend of the Russian writer Maxim Gorky, and the Norwegian explorer Fridtjof Nansen. He conducted his last concert with the Oslo Philharmonic in December 1952. His last concert was held on 19 January 1953, when he conducted the Stuttgart Orchestra. He died 9 December 1953 in Oslo at the age of 62.