Ain't No Saint is a career-spanning retrospective of folk musician John Martyn, released on the eve of the singer's 60th birthday in 2008. The four-CD compilation album was compiled by John Hillarby, and is divided into two 'studio' discs and two 'live' discs. Hillarby selected at least one song from each of Martyn's 22 albums, along with rarities and outtakes, and added over 30 unreleased pieces.