Ashley Kozak (c.1930 – 2008) was a British jazz bassist, record producer and artists' manager, best known as having been Donovan's manager. After working, and recording, with Tony Crombie and His Orchestra in 1954, together with leading UK-based jazz musicians such as Crombie, Dizzy Reece, Joe Temperley and Harry South, Kozak went on to join the Vic Ash Quartet, which recorded with Maxine Sullivan. He later joined the Don Rendell Sextet (1954–55) and The Ivor and Basil Kirchin Band (1955–56), together with Stan Tracey, and was later with the Basil Kirchin Small Band. He would return to record with Tony Crombie in the late 1950s.