Adam Duce Bass (1991-2013)Tony Costanza Drums (1991-1994)
See also: ex-Crowbar, ex-Papsmear, ex-Area 51, ex-Crisis, ex-Debris Inc.
Logan Mader Guitars (1991-1998)
See
also: Once Human, ex-Soulfly, ex-Blue, ex-Idol-X, ex-Logan Mader / J.S.
Clayden, ex-Medication, ex-New Black, ex-Pale Demons, ex-Stereo Black
Chris Kontos Drums (1994-1995)
See
also: The Alien Blakk, ex-Attitude Adjustment, ex-Konkhra,
ex-Testament, ex-Verbal Abuse, ex-Death Angel (live), ex-Exodus (live),
ex-Hell's Kitchen, ex-Anti-Trust, ex-Custard Pie, ex-Grinch, ex-Sangre
Eterna (USA), ex-The Servants
Will Carroll Drums (1995)
See
also: Death Angel, Hammers of Misfortune, Old Grandad, Warning S.F.,
ex-MindZone, ex-Scarecrow, ex-Warfare D.C., The Past, ex-Serpent Crown,
ex-Ulysses Siren, ex-Vicious Rumors, ex-Castle (live)
Walter "Monsta" Ryan Drums (1995)
See also: Attitude Adjustment, ex-Burnt Offering, ex-D.R.I., ex-Possessed, ex-Harley's War (live), ex-Madball, ex-Powerhouse
Dave McClain Drums (1996-2018)
See
also: Sacred Reich, ex-Catalepsy, ex-Ministers of Anger, ex-Murdercar,
ex-Narita, ex-S.A. Slayer, ex-Juggernaut, ex-Mark Reale Project,
ex-Seance, ex-Turbin, ex-Tyrant
Ahrue Luster Guitars (1998-2001)
See also: ex-The Horde of Torment, ex-Pestilence, Ill Niño, ex-Terror Universal
Phil Demmel Guitars (2001, 2003-2018)
See
also: Vio-lence, ex-Torque, ex-Metal Allegiance (live), ex-Slayer
(live), ex-Dublin Death Patrol, ex-Metal Warrior, ex-Technocracy

Current
Chris Kontos Drums (2019-present)
See also: The
Alien Blakk, ex-Attitude Adjustment, ex-Konkhra, ex-Testament,
ex-Verbal Abuse, ex-Death Angel (live), ex-Exodus (live), ex-Hell's
Kitchen, ex-Anti-Trust, ex-Custard Pie, ex-Grinch, ex-Sangre Eterna
(USA), ex-The Servants
Logan Mader Guitars (2019-present)
See
also: Once Human, ex-Soulfly, ex-Blue, ex-Idol-X, ex-Logan Mader / J.S.
Clayden, ex-Medication, ex-New Black, ex-Pale Demons, ex-Stereo Black
Past
Phil Demmel Guitars (2002)
See
also: Vio-lence, ex-Torque, ex-Metal Allegiance (live), ex-Slayer
(live), ex-Dublin Death Patrol, ex-Metal Warrior, ex-Technocracy
Brandon Sigmund Bass (2007)
See also: ex-Hostility
Frédéric Leclercq Guitars (2007)
See
also: DragonForce, Menace, Sinsaenum, Loudblast (live), ex-Maladaptive,
ex-Memoria, Egoine, Sudel's Project, ex-Heavenly, ex-Carnival in Coal
(live), ex-Sabaton (live), ex-Denied, ex-Gods of Hate, ex-Hors Normes,
ex-Militia, ex-Suxeed, ex-The Gust
Matt Heafy Guitars (2007)
See also: Trivium, ex-Capharnaum, Mrityu, ex-Mindscar, ex-Roadrunner United, ex-Tomorrow Is Monday, ex-Korn (live)
Christopher Amott Guitars (2007)
See also: Dark Tranquillity (live), ex-Armageddon, Black Earth, Christopher Amott, ex-Arch Enemy, ex-Ghost Ship Octavius
Corey Beaulieu Guitars (2007)
See also: Trivium
Jared MacEachern Vocals (backing) (2007)
See also: ex-Serenity Dies, ex-Sanctity
Robb Rivera Drums (2008)
See also: ex-Order of Chaos, ex-Nonpoint Factor, ex-Sekel, Nonpoint
Mark Castillo Drums (2008)
See also: ex-Between the Buried and Me, ex-Bury Your Dead, ex-Crossfade, ex-Emmure, ex-The Acacia Strain (live)
Vinnie Paul Drums (2008)
(R.I.P. 2018) See also: ex-Damageplan, ex-Pantera, ex-Hellyeah, ex-Gasoline, ex-Rebel Meets Rebel, ex-Tres Diablos

Formed on October 12th, 1991.

Shifted from groove/thrash metal to a more nu metal-tinged sound for two of their albums (The Burning Red and Supercharger), then back to a groove/thrash metal sound (Through The Ashes of Empires, The Blackening, Unto the Locust, Bloodstone & Diamonds). In 2018, they mixed the groove/thrash metal sound with nu metal on Catharsis.

Phil Demmel briefly filled in for Ahrue Luster in 2001, but did not further pursue Machine Head at the time. He later joined the band on a permanent basis in 2003.

Chris, Matt, Corey and Frederic were filling in on the Black Crusade European Tour for Phil, who had to leave the tour early to deal with the death of his father.

Compilation Appearances:
- "My Misery (Demon Knight)" on Tales From the Crypt Presents: Demon Knight soundtrack (Atlantic, 1994)
- "None But My Own" on Hertzschrittmacher (Roadrunner, 1994)
- "Davidian" on Roadrunner Records New Releases 1994 (Roadrunner, 1994)
- "Desire to Fire" on Ginger Snaps (Roadrunner, 2001)
- "Hallowed Be Thy Name" on Maiden Heaven: Kerrang! Magazine's Iron Maiden tribute