| Period | Members | Studio releases |
| 1970–1971 | Roy Wood – vocals, guitar, cello Jeff Lynne – vocals, guitar Bev Bevan – drums Rick Price – bass | — |
| 1971 | Roy Wood – vocals, guitar, bass, cello, oboe Jeff Lynne – vocals, guitar, bass, piano Bev Bevan – drums Bill Hunt – French horn Steve Woolam – violin | The Electric Light Orchestra, December 1971 |
| October 1971 – January 1972 | Roy Wood – vocals, guitar, bass, cello, oboe Jeff Lynne – vocals, guitar, bass Bev Bevan – drums Bill Hunt – French horn Steve Woolam – violin Richard Tandy – bass, piano Andy Craig – cello | — |
| January–July 1972 | Roy Wood – vocals, guitar, bass, cello, saxophone Jeff Lynne – vocals, guitar, bass Bev Bevan – drums Bill Hunt – piano, French horn Richard Tandy – bass, piano Wilfred Gibson – violin Andy Craig – cello Hugh McDowell – cello Mike Edwards – cello | ELO 2, (tracks 1 and 4) January 1973 – also first touring lineup |
| August 1972 – May 1973 | Jeff Lynne – vocals, guitar Bev Bevan – drums Richard Tandy – piano, keyboards Wilfred Gibson – violin Mike Edwards – cello Colin Walker – cello Mike de Albuquerque – bass, backing vocals | ELO 2, (remaining tracks) January 1973 |
| May–September 1973 | Jeff Lynne – vocals, guitar Bev Bevan – drums Richard Tandy – piano, keyboards Mike Edwards – cello Mike de Albuquerque – bass, backing vocals Mik Kaminski – violin | On the Third Day, November 1973 |
| September 1973 – November 1974 | Jeff Lynne – vocals, guitar Bev Bevan – drums Richard Tandy – piano, keyboards Mike Edwards – cello Mike de Albuquerque – bass, backing vocals Mik Kaminski – violin Hugh McDowell – cello | Eldorado, September 1974 |
| November 1974 – January 1980 ("classic lineup") | Jeff Lynne – vocals, guitar Bev Bevan – drums Richard Tandy – piano, keyboards Mik Kaminski – violin Hugh McDowell – cello Melvyn Gale – cello Kelly Groucutt – bass, vocals | Face the Music, September 1975 A New World Record, September 1976 Out of the Blue, October 1977 Discovery, May 1979 (Kaminski, McDowell and Gale uncredited) |
| January 1980 – 1983 | Jeff Lynne – vocals, guitar, keyboards Bev Bevan – drums Richard Tandy – piano, keyboards Kelly Groucutt – bass, vocals touring musicians: Mik Kaminski – violin (1981–1982) Louis Clark – string synthesizer (1981–1982) Dave Morgan – acoustic guitar, backing vocals (1981–1982) | Xanadu, August 1980 Time, July 1981 Secret Messages, June 1983 |
| 1984–1986 | Jeff Lynne – vocals, guitar, bass, keyboards Bev Bevan – drums Richard Tandy – piano, keyboards touring musicians: Mik Kaminski – violin Louis Clark – string synthesizer Dave Morgan – acoustic guitar, backing vocals, synthesizers Martin Smith – bass, backing vocals | Balance of Power, February 1986 |
| disbanded 1986–2000 |
| 2000–2001 | Jeff Lynne – vocals, guitar, bass, keyboards, drums Richard Tandy – keyboards, piano touring musicians: Marc Mann – guitar, keyboards, backing vocals Matt Bissonette – bass, backing vocals Greg Bissonette – drums, backing vocals Rosie Vela – backing vocals, percussion Peggy Baldwin – cello Sarah O'Brien – cello | Zoom, June 2001 |