Gary Bartz (born September 26, 1940 Baltimore, MD) is an American jazz saxophonist. He has won two Grammy Awards.

Bartz studied at the Juilliard School. In the early 1960s, he performed with Eric Dolphy and McCoy Tyner in Charles Mingus‘ Jazz Workshop. He worked as a sideman with Max Roach and Abbey Lincoln before joining Art Blakey and the Jazz Messengers. In 1968, he was a member of McCoy Tyner‘s band, Expansions.

In mid-1970, he joined Miles Davis‘ band, performing live at the Isle Of Wight festival in August; and at a series of December dates at The Cellar Door club in Washington, D.C. Portions of these shows were initially released on the 1971 Live-Evil album, with the entire six performance/four night run eventually released in full on the 2005 Cellar Door Sessionsbox set. He later formed the band Ntu Troop, which combined jazz, funk, and soul.