Reginald “Reggie” Workman (born June 26, 1937 in Philadelphia, Pennsylvania) is an American avant-garde jazz and hard bop double bassist, recognized for his work with both John Coltrane and Art Blakey.

Early in his career, Workman worked in jazz groups led by Gigi Gryce, Donald Byrd, Duke Jordan and Booker Little. In 1961, Workman joined the John Coltrane Quartet, replacing Steve Davis. He was present for the saxophonist’s Live at the Village Vanguard sessions, and also recorded with a second bassist (Art Davis) on the 1961 album, Olé Coltrane. Workman left Coltrane’s group at the end of the year, following a European tour.

In 1962, Workman joined Art Blakey‘s Jazz Messengers (replacing long-time Blakey bassist Jymie Merritt), and worked alongside Freddie Hubbard, Wayne Shorter, and Cedar Walton for most of this period. Workman left Blakey’s group in 1964.