Ben Allison (born 17 November 1966) is an American jazz double bassist and composer born in New Haven, Connecticut.
His groups include The Ben Allison Band, Peace Pipe, the Ben Allison Quartet, Medicine Wheel, the Kush Trio, Man Size Safe, and the Herbie Nichols Project (which he co-leads with pianist Frank Kimbrough). At the age of 25 he formed the Jazz Composers Collective, a New York City nonprofit organization, serving as that organization's Artistic Director and as a Composer-in-Residence.