Mark Isham (born September 7, 1951) is an American trumpeter, synthesist, and composer. He works in a variety of genres, including jazz, electronic, and film.
Isham was born in New York City. He studied classical music at an early age and played trumpet, piano and violin. The Isham family later moved to San Francisco, where Mark found work in several of the local orchestras. He also became actively involved in the Bay Area rock and roll scene of the 1960s, performing live with several of the local groups.