Harald Heide (March 8, 1876 – January 27, 1956) was a Norwegian violinist, conductor, and composer. Heide was born in Fredrikstad, the son of the violin-maker Johan Albert Heide (1847–1925). He studied music theory and violin at the Oslo Conservatory of Music from 1891 to 1896, and after that studied violin in Berlin under . He taught at the Bergen Music School from 1898 to 1899 and was the concertmaster at the National Theater orchestra in Oslo from 1899 to 1903. He then studied under César Thomson in Brussels, followed by a tour as a concert violinist in England and the United States. In 1907 he became the conductor at the National Theater in Bergen, working there from 1907 to 1919 and again from 1925 to 1926.