| M.O.D. (Method of Destruction) |
Methods of Mayhem |
| M.S.I. |
Mgla |
| Maax |
Mhorgl |
| Macabre |
Miasmal |
| Mach22 |
Michael Schenker |
| Machetazo |
Michael Schenker Group |
| Machete Justice |
Mick Mars |
| Machete, The |
Mick Wall |
| Machiavellian |
Middian |
| Machinae Supremacy |
Midnight |
| Machine Head |
Midnight Reign |
| Machine Men |
Mighty Nimbus, The |
| Machinemade God |
Miles Davis |
| Machinery |
Millionaire |
| Machines |
Mincing Fury and Guttural Clamour of Queer Decay |
| Mad City Rockers |
Mindfeeder |
| Mad Season |
Mindjuice |
| Madball |
Mindsnare |
| Madder Mortem |
Ministry |
| Made of Hate |
Minor Times, The |
| Magellan |
Minsk |
| Maggots |
Minus Life |
| Magician |
Minushuman |
| Magister Dixit |
Mirrors for Psychic Warfare |
| Magnum |
Mirrorthrone |
| Magrudergrind |
Miseration |
| Mahatma |
Misery |
| Mahavatar |
Misery Index |
| Mainline |
Misery Signals |
| Majesty |
Misfits |
| Make them Suffer |
Mission in Motion, The |
| Malakyte |
Mistress |
| Malefice |
MM9 |
| Malevolent Creation |
Mnemic |
| Malfeitor |
Mob Rules |
| Malignant Monster |
Mojomatics, The |
| Malpractice |
Moleskin |
| Mammal |
Monarch |
| Man Must Die |
Mondo Generator |
| Man-Eating Tree, The |
Mono |
| Månegarm |
Monolith Deathcult, The |
| Manes |
Monster Magnet |
| Maniac Killer |
Monsterworks |
| Manitssa |
Monte Pittman |
| Mannhai |
Monuments |
| Manntis |
Moonlight Agony |
| Manowar |
Moonsorrow |
| Mantar |
Moonspell |
| Mantic Ritual |
Morbid Angel |
| Manticore |
Morbrand |
| Maple Cross |
Morbus Chron |
| Mar De Grises |
Morfin |
| Marble |
Morgion |
| Marble Arch |
Morgoth |
| Marc Rizzo |
Mörk Gryning |
| Marduk |
Morning After |
| Marginal |
Mors Principium Est |
| Mariachi El Bronx |
Morta Skuld |
| Marilyn Manson |
Mortal Sin |
| Marionette |
Mortality |
| Mark Kelson |
Mortemia |
| Maroon |
Mortician |
| Mars Volta, The |
Mortification |
| Marshall Law |
Mortiis |
| Martin Popoff |
Morton |
| Marty Friedman |
Moss |
| Mary Jane Kelly |
Mother and Son |
| Masacre |
Mothra |
| Masada |
Motionless in White |
| Mason |
Motive |
| Mass Infection |
Mötley Crüe |
| Mass Obliteration |
Motörhead |
| Massacre |
Motormoth |
| Mastabah |
Mountain Mirrors |
| Mastercastle |
Mournful Congregation |
| Masterplan |
Mourning Caress |
| Masters of Luxury |
Mourning Tide |
| Mastodon |
Mouth of the Architect |
| Matt Zane |
Mower |
| Max Cavalera |
Mr. Death |
| Max Midsun |
MRTVI |
| Maxx |
Muderdolls |
| Mayhem |
Mudvayne |
| Maylene and the Sons of Disaster |
Mumakil |
| McQueen |
Municipal Waste |
| Meads of Asphodel, The |
Murder Construct |
| Meat Loaf |
Murder of My Sweet, The |
| Meatyard |
Murder Therapy |
| Mechanical Black |
Murderdolls |
| Mechanical Organic |
Murmur |
| Megadeth |
Mushroom Giant |
| Mekong Delta |
Mushroomhead |
| Melancholic Art |
Mustasch |
| Meldrum |
Mutagenocide |
| Melechesh |
Mutated |
| Melodyssey |
Mutation |
| Melvins, The |
Mutilation Rites |
| Memoriam |
Mutiny Within |
| Memory Garden |
MXPX |
| Menace |
My Brother the Wind |
| Mendeed |
My Chemical Romance |
| Meniscus |
My Dying Bride |
| Menzingers, The |
My Dynamite |
| Merauder |
My Epic |
| Mercenary |
My Own Grave |
| Merciless Death |
Mygrain |
| Merrimack |
Myland |
| Meshuggah |
Myrkur |
| Messiah's Kiss |
Mystic Circle |
| Metal Allegiance |
Mystic Grave |
| Metal Church |
Mystic Prophecy |
| Metal Mike |
Mysticum |
| Metalium |
Mythodea |
| Metallica |
Mytile Vey Lorth |
| Metalocalypse |