Morton Subotnick (born April 14, 1933) is an American composer of electronic music, best known for his 1967 composition Silver Apples of the Moon, the first electronic work commissioned by a record company, Nonesuch. He was one of the founding members of California Institute of the Arts, where he taught for many years.

Subotnick has worked extensively with interactive electronics and multi-media, co-founding the San Francisco Tape Music Center with Pauline Oliveros and Ramon Sender, often collaborating with his wife Joan La Barbara. Morton Subotnick is one of the pioneers in the development of electronic music and multi-media performance and an innovator in works involving instruments and other media, including interactive computer music systems. Most of his music calls for a computer part, or live electronic processing; his oeuvre utilizes many of the important technological breakthroughs in the history of the genre.