Marcus Miller (born William Henry Marcus Miller Jr., June 14, 1959, Brooklyn, New York (New York City)) is an American (United States) jazz musician, composer, producer (Record producer), and multi-instrumentalist.

Miller is best known as a bass (bass guitar)ist, working with trumpeter Miles Davis, singer Luther Vandross, and saxophonist David Sanborn, as well as maintaining a prolific solo career. Miller is classically trained as a clarinetist and also plays keyboards (Keyboard instrument), saxophone and guitar.