William Henry Marcus Miller Jr. (born June 14, 1959) is an American musician, songwriter, and record producer.

He has worked with trumpeter Miles Davis, pianist Herbie Hancock, singer Luther Vandross, and saxophonists Wayne Shorter and David Sanborn, among others.

Miller began to work regularly in New York City, eventually playing bass and writing music for jazz flautist Bobbi Humphrey and keyboardist Lonnie Liston Smith.

[8] He has played bass on over 500 recordings, appearing on albums by such artists as Michael Jackson, Beyoncé, Herbie Hancock, Mariah Carey, Eric Clapton, The Crusaders, Wayne Shorter, McCoy Tyner, Frank Sinatra, George Benson, Dr. John, Aretha Franklin, Elton John, Joe Walsh, Jean-Michel Jarre, Grover Washington Jr., Donald Fagen, Bill Withers, Bernard Wright, Kazumi Watanabe, Chaka Khan, LL Cool J and Flavio Sala.

[11][12] As a composer, Miller co-wrote and produced several songs on the Miles Davis album Tutu, including the title track.

In 2008 Miller formed another supergroup, SMV, with fellow bassists Stanley Clarke and Victor Wooten, for a world tour lasting 18 months.

[16] In the summer of 2011, Miller toured alongside Herbie Hancock and Wayne Shorter celebrating Miles Davis on the 20th anniversary of his death.

[24] Miller plays a transparent blonde finish 1977 Fender Jazz Bass that was modified by luthier Roger Sadowsky with the addition of a Stars Guitar and later a Bartolini TCT preamp[25] so he could control his sound in the studio.

[31] Philippe Saisse featuring Marcus Miller Kirk Whalum Featuring Marcus Miller & Barry Likumahuwa Tutu Revisited – Live 2010 The Jamaica Boys With Miles Davis With David Sanborn With Luther Vandross With Grover Washington Jr. With others