Compilations
1978 Harper 1970–1975
1994 An Introduction to .....
1997 Song of the Ages (3-CD collection of Roy Harper interviews)
1997 The BBC Tapes – Volume I (1969–1973) The BBC Tapes – Volume III (BBC Sessions 1974)
The BBC Tapes – Volume V (BBC Sessions 1975–1978)
2001 Hats Off (compilation of collaborative tracks) East of the Sun (compilation of love songs)
2002 – Today Is Yesterday (compilation of demo, unreleased and rare material from 1964–1967)
2005 – Counter Culture (double disc compilation)
2007 – From Occident to Orient (compilation and initially, only released in Japan whilst Harper toured there)
2011 – Songs of Love and Loss (two volume compilation of love songs)
Reissues and remixes
1977 – The Early Years (reissue of Come Out Fighting Ghengis Smith)
1994 – Garden of Uranium (reissue of Descendants of Smith)
1998 – Death or Glory? (tracks 1 & 9 remixed)