| Period | Members | Releases |
| December 1968 – July 1975(Earth until August 1969, Black Sabbath afterwards) | Ozzy Osbourne – vocals, harmonica, occasional synthesizers Tony Iommi – guitars, keyboards Geezer Butler – bass, synthesizers Bill Ward – drums | Black Sabbath (1970) Paranoid (1970) Master of Reality (1971) Vol. 4 (1972) Sabbath Bloody Sabbath (1973) Sabotage (1975) Live at Last (1980) Past Lives (2002) |
| July 1975 – April 1977 | Ozzy Osbourne – vocals, occasional synthesizers Tony Iommi – guitars, keyboards Geezer Butler – bass, synthesizers Jezz Woodroffe – keyboards (session/touring) Bill Ward – drums, occasional vocals | Technical Ecstasy (1976) Past Lives (2002) |
| April – October 1977 | Ozzy Osbourne – vocals Tony Iommi – guitars Geezer Butler – bass Bill Ward – drums | none |
| October 1977 – January 1978 | Dave Walker – vocals Tony Iommi – guitars Geezer Butler – bass Bill Ward – drums |
| January – May 1978 | Ozzy Osbourne – lead vocals Tony Iommi – guitars, backing vocals Geezer Butler – bass, backing vocals Don Airey – keyboards (session) Bill Ward – drums, occasional vocals | Never Say Die! (1978) |
| May 1978 – April 1979 | Ozzy Osbourne – lead vocals Tony Iommi – guitars Geezer Butler – bass Bill Ward – drums, occasional vocals | Never Say Die! VHS/DVD (1978) |
| April – July 1979 | Ronnie James Dio – vocals Tony Iommi – guitars Geezer Butler – bass Bill Ward – drums | none |
| July 1979 | Ronnie James Dio – vocals, bass Tony Iommi – guitars Bill Ward – drums |
| July – August 1979 | Ronnie James Dio – vocals Tony Iommi – guitars Geoff Nicholls – bass Bill Ward – drums |
| August – November 1979 | Ronnie James Dio – vocals Tony Iommi – lead guitar Craig Gruber – bass Geoff Nicholls – keyboards, rhythm guitar (session/touring) Bill Ward – drums |
| November 1979 – August 1980 | Ronnie James Dio – vocals Tony Iommi – guitars Geezer Butler – bass Geoff Nicholls – keyboards (session/touring) Bill Ward – drums | Heaven and Hell (1980) |
| August 1980 – December 1982 | Ronnie James Dio – vocals Tony Iommi – guitars Geezer Butler – bass Geoff Nicholls – keyboards (session/touring) Vinny Appice – drums | Black and Blue VHS (1981) Mob Rules (1981) Live Evil (1982) Live at Hammersmith Odeon (2007) |
| December 1982 – July 1983 | Ian Gillan – vocals Tony Iommi – lead guitar Geezer Butler – bass Geoff Nicholls – keyboards, rhythm guitar (session/touring) Bill Ward – drums | Born Again (1983) |
| July 1983 – March 1984 | Ian Gillan – vocals Tony Iommi – lead guitar Geezer Butler – bass Geoff Nicholls – keyboards, rhythm guitar (session/touring) Bev Bevan – drums | none |
| March – April 1984 | Ron Keel – vocals Tony Iommi – lead guitar Geezer Butler – bass Geoff Nicholls – keyboards, rhythm guitar (session/touring) Bev Bevan – drums |
| April – late 1984 | David Donato – vocals Tony Iommi – lead guitar Geezer Butler – bass Geoff Nicholls – keyboards, rhythm guitar (session/touring) Bill Ward – drums |
| January – May 1985 | Jeff Fenholt – vocals Tony Iommi – lead guitar Gordon Copley – bass Geoff Nicholls – keyboards, bass, rhythm guitar Eric Singer – drums |
| 13 July 1985 (Live Aid) | Ozzy Osbourne – lead vocals Tony Iommi – guitars, backing vocals Geezer Butler – bass Bill Ward – drums |
| July 1985 – March 1986 | Glenn Hughes – vocals Tony Iommi – lead guitar Dave Spitz – bass Geoff Nicholls – keyboards, rhythm guitar Eric Singer – drums | Seventh Star (1986) |
| March – October 1986 | Ray Gillen – vocals Tony Iommi – lead guitar Dave Spitz – bass Geoff Nicholls – keyboards, rhythm guitar Eric Singer – drums | none |
| October 1986 – March 1987 | Ray Gillen – vocals Tony Iommi – lead guitar Bob Daisley – bass (session) Geoff Nicholls – keyboards, bass, rhythm guitar Eric Singer – drums | The Eternal Idol (1987) – Gillen's lead vocals were not included on the final album |
| March – July 1987 | Tony Martin – vocals Tony Iommi – lead guitar Geezer Butler – bass Geoff Nicholls – keyboards, rhythm guitar Bev Bevan – drums, percussion | The Eternal Idol (1987) – Martin's lead vocals and Bevan's percussion overdubbed onto the previous line-up's instrumentation |
| July 1987 | Tony Martin – vocals Tony Iommi – lead guitar Dave Spitz – bass Geoff Nicholls – keyboards, rhythm guitar Bev Bevan – drums | none |
| July – August 1987 | Tony Martin – vocals Tony Iommi – lead guitar Dave Spitz – bass Geoff Nicholls – keyboards, rhythm guitar Terry Chimes – drums (touring) |
| November – December 1987 | Tony Martin – vocals Tony Iommi – lead guitar Jo Burt – bass (touring) Geoff Nicholls – keyboards, bass, rhythm guitar Terry Chimes – drums (touring) |
| 29 May 1988 (one-off show) | Tony Martin – vocals Tony Iommi – guitar Geoff Nicholls – bass Terry Chimes – drums |
| August – November 1988 | Tony Martin – vocals Tony Iommi – lead guitar Laurence Cottle – bass (session) Geoff Nicholls – keyboards, bass, rhythm guitar Cozy Powell – drums | Headless Cross (1989) |
| November 1988 – November 1990 | Tony Martin – vocals Tony Iommi – lead guitar Neil Murray – bass Geoff Nicholls – keyboards, rhythm guitar Cozy Powell – drums | Tyr (1990) |
| November 1990 – January 1991 | Tony Martin – vocals Tony Iommi – lead guitar Geezer Butler – bass Geoff Nicholls – keyboards, rhythm guitar Cozy Powell – drums | none |
| January – March 1991 | Ronnie James Dio – vocals Tony Iommi – lead guitar Geezer Butler – bass Geoff Nicholls – keyboards, rhythm guitar Cozy Powell – drums |
| March – mid-1991 | Tony Martin – vocals Tony Iommi – lead guitar Geezer Butler – bass Geoff Nicholls – keyboards, rhythm guitar Cozy Powell – drums |
| Mid-1991 – November 1992 | Ronnie James Dio – vocals Tony Iommi – lead guitar Geezer Butler – bass Geoff Nicholls – keyboards, rhythm guitar Vinny Appice – drums | Dehumanizer (1992) |
| November 1992 | Rob Halford – vocals (substitute for Dio) Tony Iommi – lead guitar Geezer Butler – bass Geoff Nicholls – keyboards, rhythm guitar Vinny Appice – drums | none |
| 15 November 1992 (one-off show) | Ozzy Osbourne – vocals Tony Iommi – guitars Geezer Butler – bass Bill Ward – drums |
| March 1993 – August 1994 | Tony Martin – vocals Tony Iommi – lead guitar Geezer Butler – bass Geoff Nicholls – keyboards, rhythm guitar Bobby Rondinelli – drums | Cross Purposes (1994) Cross Purposes Live (1995) Cross Purposes Live VHS (1995) |
| August – September 1994 | Tony Martin – vocals Tony Iommi – lead guitar Geezer Butler – bass Geoff Nicholls – keyboards, rhythm guitar Bill Ward – drums | none |
| September 1994 – August 1995 | Tony Martin – vocals Tony Iommi – lead guitar Neil Murray – bass Geoff Nicholls – keyboards, rhythm guitar Cozy Powell – drums | Forbidden (1995) |
| August 1995 – January 1997 | Tony Martin – vocals Tony Iommi – lead guitar Neil Murray – bass Geoff Nicholls – keyboards, rhythm guitar Bobby Rondinelli – drums | none |
| March – June 1997 | Ozzy Osbourne – vocals Tony Iommi – lead guitar Geezer Butler – bass Geoff Nicholls – keyboards Mike Bordin – drums (touring) |
| 1 July 1997 (one-off show) | Ozzy Osbourne – vocals Tony Iommi – lead guitar Geezer Butler – bass Geoff Nicholls – keyboards Shannon Larkin – drums (substitute for Bordin) |
| November – December 1997 | Ozzy Osbourne – vocals Tony Iommi – lead guitar Geezer Butler – bass Geoff Nicholls – keyboards Bill Ward – drums | Reunion (1998) – live tracks |
| December 1997 – May 1998 | Ozzy Osbourne – vocals Tony Iommi – guitars Geezer Butler – bass Bill Ward – drums | Reunion (1998) – studio tracks |
| May 1998 | Ozzy Osbourne – vocals Tony Iommi – lead guitar Geezer Butler – bass Geoff Nicholls – keyboards Bill Ward – drums | none |
| May – June 1998 | Ozzy Osbourne – vocals Tony Iommi – lead guitar Geezer Butler – bass Geoff Nicholls – keyboards Vinny Appice – drums |
| July 1998 – April 2004 | Ozzy Osbourne – vocals Tony Iommi – lead guitar Geezer Butler – bass Geoff Nicholls – keyboards Bill Ward – drums | The Last Supper DVD (1999) |
| May – June 2004 | Ozzy Osbourne – vocals Tony Iommi – lead guitar Geezer Butler – bass Adam Wakeman – keyboards (touring) Mike Bordin – drums (touring) | none |
| June – 26 August 2004 | Ozzy Osbourne – vocals Tony Iommi – lead guitar Geezer Butler – bass Adam Wakeman – keyboards (touring) Bill Ward – drums |
| 27 August 2004 | Rob Halford – vocals (substitute for Osbourne) Tony Iommi – lead guitar Geezer Butler – bass Adam Wakeman – keyboards (touring) Bill Ward – drums |
| 28 August 2004 – March 2006 | Ozzy Osbourne – vocals Tony Iommi – lead guitar Geezer Butler – bass Adam Wakeman – keyboards (touring) Bill Ward – drums |
