Henry Eichheim (January 3, 1870 – August 22, 1942) was an American composer, conductor, violinist, organologist, and ethnomusicologist.
He is best known as one of the first American composers to combine the sound of indigenous Asian instruments with western orchestral colors.
After about 1912 he became more interested in conducting and composition than in violin performance; he was an early promoter of the works of contemporary French composers, particularly Debussy, Ravel and Gabriel Fauré, in the United States.
After Eichheim's death, the University of California, Santa Barbara inherited his collection of papers, photographs and musical instruments.
Some of his better-known compositions include Oriental Impressions (1919–1922), which contains transcriptions of Japanese, Korean and Thai melodies; Java (1929), and Bali (1931), which use instruments from the gamelan ensembles of those two islands; and The Moon, My Shadow and I (1926), a setting of poems by Li Bai.