Free Jazz: A Collective Improvisation is an album by the jazz saxophonist and composer Ornette Coleman. It was released through Atlantic Records in September 1961: the fourth of Coleman's six albums for the label. Its title named the then-nascent free jazz movement.
About Ornette! Brian Olewnick commented that Coleman is found "plumbing his quartet music to ever greater heights of richness and creativity," concluding that the album was "a superb release and a must for all fans of Coleman and creative improvised music in general" and particularly praising drummer Ed Blackwell's performance.