| Machinae Supremacy | Redeemer | | 2006 | CD | |
| Machinae Supremacy | A View from the End of the World | | 2010 | CD | |
| Machinae Supremacy | Phantom Shadow | | 2014 | CD | |
| Machine Head | Burn My Eyes | | 1994 | CD | |
| Machine Head | The More Things Change... | | 1997 | CD | |
| Machine Head | The Burning Red | | 1999 | CD | |
| Machine Head | Supercharger | | 2001 | CD | |
| Machine Head | Through the Ashes of Empire | | 2003 | CD | |
| Machine Head | The Blackening | | 2007 | CD | |
| Machine Head | Unto the Locust | | 2011 | CD+DVD | |
| Machine Head | Machine Fucking Head Live | | 2012 | 2CD | |
| Machine Head | Bloodstone & Diamonds | | 2014 | CD | |
| Machine Head | Catharsis | | 2018 | CD+DVD | |
| Machine Men | Scars & Wounds | | 2003 | CD | |
| Machine Men | Elegies | | 2005 | CD | |
| Mad Juana | Skin of My Teeth | | 1997 | Muu | ≡ |
| Mad Sin | Burn and Rise | | 2010 | LP | |
| Madball | N. Y. H. C. EP | | 2004 | CDEP | |
| Madball | For The Cause | | 2018 | CD | |
| Mana Mana | Compelete... Kaikki | | 2000 | CD | |
| Mann, Aimee | @#%&*! Smilers | | 2008 | CD | |
| Manowar | Into Glory Ride | | 1983 | CD | |
| Manowar | Hail to England | | 1984 | CD | |
| Manowar | Sign of the Hammer | | 1984 | CD | |
| Manowar | Fighting the World | | 1987 | CD | |
| Manowar | Kings of Metal | | 1988 | CD | |
| Manowar | The Triumph of Steel | | 1992 | CD | |
| Manowar | Louder than Hell | | 1996 | CD | |
| Manowar | Gods of War | | 2007 | CD+DVD | ≡ |
| Manowar | The Final Battle I | | 2019 | CDEP | |
| Mantar | Death by Burning | | 2014 | CD | |
| Manticora | Hyperion | | 2002 | CD | |
| Marenne | The Past Prelude | | 2009 | CD | |
| Marianelli, Dario | Paddington 2: Original Motion Picture Soundtrack | | 2017 | CD | |
| Marillion | The Thieving Magpie (La Gazza Ladra) | | 1988 | 2CD | |
| Marillion | Brave | | 1994 | CD | |
| Marillion | Kayleigh | | 1996 | CD | |
| Marillion | Marbles on The Park | | 2017 | 2CD | |
| Marin, Marko | Heijastu, katoa ja ole valmiina | | 2005 | CD | |
| Marley, Stephen | Mind Control | | 2007 | CD | |
| Mars Volta, The | De-loused in the Comatorium | | 2003 | CD | |
| Mars Volta, The | Amputechture | | 2006 | CD | |
| Massive Attack | 100th Window | | 2003 | CD | |
| Massive Attack | Danny The Dog | | 2004 | CD | |
| Mastodon | Remission | | 2002 | CD | |
| Mastodon | Leviathan | | 2004 | CD+DVD | ≡ |
| Mastodon | Blood Mountain | | 2006 | CD | |
| Mastodon | Crack the Skye | | 2009 | CD+DVD | |
| Mastodon | Live at the Aragon | | 2011 | CD+DVD | |
| Mastodon | The Hunter | | 2011 | CD+DVD | |
| Mastodon | Once More 'Round the Sun | | 2014 | CD | |
| Mastodon | Cold Dark Place | | 2017 | CDEP | |
| Mastodon | Emperor of Sand | | 2017 | CD | |
| Matchbox Twenty | Exile on Mainstream | | 2007 | CD+DVD | |
| Matisyahu | No Place to Be | | 2006 | CD+DVD | |
| McLachlan, Sarah | Mirrorball | | 1999 | CD | |
| Meat Loaf | Bat out of Hell | | 1977 | CD | |
| Meat Loaf | Daed Ringer | | 1981 | CD | |
| Meat Loaf | Bat out of Hell II: Back into Hell | | 1993 | CD | |
| Meat Loaf | Welcome to The Neighbourhood | | 1995 | CD | |
| Meat Loaf | The Best of Meat Loaf | | 2003 | CD | |
| Meat Loaf | Bay Out of Hell III - The Monster is Loose | | 2006 | CD | |
| Meat Loaf | It's All Coming Back to Me | | 2006 | CDS | |
| Meat Loaf | Hang Cool Teddy Bear | | 2010 | CD | |
| Megadeth | Peace Sells...But Who's Buying? | | 1986 | CD | |
| Megadeth | So Far, So Good...So What! | | 1988 | CD | |
| Megadeth | Rust in Peace | | 1990 | CD | |
| Megadeth | Countdown to Extinction | | 1992 | CD | |
| Megadeth | Youthanasia | | 1994 | CD | |
| Megadeth | Cryptic Writings | | 1997 | CD | |
| Megadeth | Risk | | 1999 | 2CD | |
| Megadeth | The World Needs a Hero | | 2001 | CD | |
| Megadeth | The System Has Failed | | 2004 | CD | |
| Megadeth | Greatest Hits | | 2005 | CD | |
| Megadeth | United Abominations | | 2007 | CD | |
| Megadeth | Endgame | | 2009 | CD | |
| Megadeth | Th1rt3en | | 2011 | CD | |
| Megadeth | Countdown to Extinction Live | | 2013 | CD | |
| Megadeth | Dystopia | | 2016 | CD | |
| Melechesh | The Epigenesis | | 2010 | CD | |
| Merchant, Natalie | Tigerlily | | 1995 | CD | |
| Merchant, Natalie | Nonesuch | | 2014 | CD | |
| Mercyful Fate | In The Shadows | | 1993 | CD | |
| Mercyful Fate | Time | | 1994 | CD | |
| Mercyful Fate | Into The Unknown | | 1996 | CD | |
| Mercyful Fate | Dead Again | | 1998 | CD | |
| Mertsi & Pate | Kärmesmiehet | | 2002 | CDS | |
| Meshuggah | Catch Thirtythree | | 2005 | CD | |
| Metal Allegiance | Volume II: Power Drunk Majesty | | 2018 | CD | |
| Metalium | State of Triumph - Chapter Two | | 2000 | CD | |
| Metallica | Kill 'em All | | 1983 | CD | |
| Metallica | Ride the Lightning | | 1984 | CD | |
| Metallica | Master of Puppets | | 1986 | CD | |
| Metallica | ...And Justice for All | | 1988 | CD | |
| Metallica | Metallica | | 1990 | CD | |
| Metallica | Load | | 1996 | CD | |
| Metallica | Garage Inc. | | 1998 | 2CD | |
| Metallica | S&M | | 1999 | 2CD | |
| Metallica | St. Anger | | 2003 | CD | |
| Metallica | Death Magnetic | | 2008 | CD | |
| Metallica | Through the Never (Music from the Motion Picture) | | 2013 | 2CD | |
| Metallica | Hardwired... To Self-Destruct | | 2016 | 3CD | |
| Metallica | S&M2 | | 2019 | 2CD | |
| Meth, Ghost and Rae | Wu Massacre | | 2010 | CD | |
| Mika | Life in Cartoon Motion | | 2007 | CD | |
| Mika | The Boy Who Knew Too Much | | 2009 | 2CD | |
| Miljoonasade | Pullo Hunajaa | | 1992 | CD | |
| Millencolin | The Melancholy Collection | | 1999 | CD | |
| Mirzadeh | The Creatures of Loviatar | | 2005 | CD | |
| Misery Inc. | Random End | | 2006 | CD | |
| Misery Speaks | Disciples of Doom | | 2009 | CD | |
| Misled Generation | Abuse of Profusion | | 2015 | CD | |
| Moby | Everytime You Touch Me | | 1995 | CDS | |
| Moby | Play: The B Sides | | 2000 | CD | |
| Moby | Last Night | | 2008 | CD | |
| Moby | More Fast Songs about The Apocalypse | | 2017 | CD | |
| Mongoose III | The Devil's Big Weed Smoke of '65 | | 1999 | CD | |
| Monkees, The | Instant Replay | | 1995 | CD | |
| Monkees, The | The Greatest Hits of The Monkees | | 1997 | CD | |
| Monster Magnet | Spine of God | | 2017 | CD | |
| Monster Magnet | Mindfucker | | 2018 | CD | |
| Montany | New Born Day | | 2002 | CD | |
| Moonsorrow | Verisäkeet | | 2005 | CD | |
| Moonsorrow | V: Hävitetty | | 2007 | CD | |
| Moonsorrow | Tulimyrsky | | 2008 | CDEP | |
| Moonspell | Wolfheart | | 1995 | CD | |
| Moonspell | Irreligious | | 1996 | CD | |
| Moonspell | 2econd Skin | | 1997 | 2CD | |
| Moonspell | The Great Silver Eye | | 2007 | CD | |
| Moonspell | Alpha Noir | | 2012 | 2CD | |
| Morbid Angel | Domination | | 1995 | CD | |
| Morcheeba | Fragments of Freedom | | 2000 | CD | |
| Morgan, Mark | Torment: Tides of Numenera Soundtrack | | 2017 | CD | |
| Mors Subita | Into The Pitch Black | | 2018 | CD | |
| Mors Subita | Extinction Era | | 2020 | CD | |
| Morton, Mark | Anesthetic | | 2019 | CD | |
| Motorhomes,The | Long Distance Runners | | 2002 | CD | |
| Motörhead | Bomber | | 1979 | 2CD | ≡ |
| Motörhead | On Parole | | 1979 | CD | |
| Motörhead | Overkill | | 1979 | CD | |
| Motörhead | Ace of Spades | | 1980 | CD | |
| Motörhead | No Sleep 'til Hammersmith | | 1981 | CD | |
| Motörhead | Iron Fist | | 1982 | CD | |
| Motörhead | Iron Fist | | 1982 | LP | |
| Motörhead | Another Perfect Day | | 1983 | CD | |
| Motörhead | Orgasmatron | | 1986 | CD | |
| Motörhead | 1916 | | 1991 | CD | |
| Motörhead | March Ör Die | | 1992 | CD | |
| Motörhead | Sacrifice | | 1995 | CD | |
| Motörhead | Overnight Sensation | | 1996 | CD | |
| Motörhead | Snake Bite Love | | 1998 | CD | |
| Motörhead | Everything Louder than Everyone Else | | 1999 | 2CD | |
| Motörhead | We Are Motörhead | | 2000 | CD | |
| Motörhead | 25 & Alive: Boneshaker | | 2001 | CD+DVD | |
| Motörhead | Hammered | | 2002 | CD | |
| Motörhead | Inferno | | 2004 | CD | |
| Motörhead | Kiss of Death | | 2006 | CD | ≡ |
| Motörhead | The Wörld Is Yours | | 2010 | CD | |
| Mraz, Jason | We Sing, We Dance, We Steal Things | | 2008 | CD | |
| Mraz, Jason | Jason Mraz's Beautiful Mess - Live on Earth | | 2009 | CD+DVD | |
| Mucc | Gokusai | | 2007 | CD | |
| Mucc | Kyuutai | | 2009 | CD+DVD | |
| Mucc | Shangri-la | | 2012 | 2CD | |
| Mudvayne | Lost and Found | | 2005 | – | |
| Mudvayne | The New Game | | 2008 | CD | |
| Mumford & Sons | Babel | | 2012 | CD | |
| Murmurs, The | America | | 1994 | CD | |
| Mushroomhead | XX | | 2001 | CD | |
| Mushroomhead | Savior Sorrow | | 2006 | CD | |
| Mushroomhead | The Righteous & The Butterfly | | 2014 | CD | |
| Musta Risti | Musta Risti | | 2018 | CD | |
| Musta Risti | Sotamaagi/Inkvisiittori | | 2021 | 7" | |
| Mustasch | Above All | | 2002 | CD | |
| Mustasch | Ratsafari | | 2003 | CD | |
| Mustasch | Powerhouse | | 2005 | CD | |
| My Bloody Valentine | mbv | | 2013 | CD | |
| My Dying Bride | Turn Loose the Swans | | 1993 | 2CD | |
| My Dying Bride | Like Gods of the Sun | | 1996 | CD | |
| My Dying Bride | Songs of Darkness, Words of Light | | 2004 | CD | |
| My Dying Bride | An Ode to Woe | | 2008 | CD+DVD | |
| My Dying Bride | For Lies I Sire | | 2009 | CD | |
| My Dying Bride | The Vaulted Shadows | | 2011 | CD | |
| My Dying Bride | Feel the Misery | | 2015 | CD | |
| MyGrain | Planetary Breathing | | 2013 | CD | |
| Myrath | Legacy | | 2016 | CD | |
| Mystic Prophecy | Fireangel | | 2009 | 2CD | |
