Leon Klatzkin (1914–1992) was an American music arranger, composer, and conductor notable for his work in television. He also scored films occasionally. Prolific film and television composer, orchestra conductor, soundtrack orchestrator and arranger. Coming to Hollywood, he worked in the music department of the Hal Roach Studios for eight years, and thereafter moved on to other film companies as well, especially 20th Century-Fox. He joined ASCAP in 1952, and his list of compositions there number well over 600, nearly all of them themes for film and television.