Marcus Gilmore (born October 10, 1986) is the grandson of Roy Haynes, who gave him his first drum kit at the age of ten, and the nephew of Graham Haynes.

Like his grandfather, Gilmore draws upon a wide variety of influences from Tony Williams to free jazz drummer Milford Graves.

Marcus, in all of his playing, integrates a unique style where he is musically expanding rhythm, while supporting the great musicians with whom he plays. He has also performed/recorded with Herbie Hancock, Mulatu Astatke, Ravi Coltrane, Roscoe Mitchell, Common, Thundercat, Vijay Iyer, Wadada Leo Smith, Flying Lotus, Cassandra Wilson, Bilal, Talib Kweli, Queen Latifah, Black Thought, Zakir Hussain,  Esperanza Spalding, Roy Hargrove, Nicholas Payton, Robert Glasper, Chick Corea, Gonzalo Rubalcaba, Nicholas Payton, Steve Coleman, Vijay Iyer, and Ambrose Akinmusire

A graduate of the Fiorello H. LaGuardia High School of Music & Art and Performing Arts,[Marcus also received full ride scholarships to the Juilliard School of Music and Manhattan School of Music. He has been touring professionally since the age of sixteen.

He is also embarking on solo projects with his bands "Actions Speak" and "Silhouwav.

He has been named a protégé of the 2018 Rolex Mentors And Protégé project.[7]

In August 2020, Gilmore contributed to the live streamed recording of the singer Bilal's EP VOYAGE-19, created remotely during the COVID-19 lockdowns. It was released the following month with proceeds from its sales going to participating musicians in financial hardship from the lockdown.

Marcus Gilmore is the recipient of several awards such as a Latin Grammy Award for his work with pianist and composer Chick Corea.

Marcus was introduced as one of the "25 for the Future" by DownBeat magazine in 2016.