| A | B | C | D | E | F | G | H | I | J | K | L | M | N |
| O | P | Q | R | S | T | U | V | W | X | Y | Z |
| O | P | Q | R | S | T | U | V | W | X | Y | Z |
| Label | Artyści | Debiut |
|---|---|---|
| Mirror Promotion | Darkwell | |
| Misanthropy Records | In The Woods... | 1996 |
| MMI Records | Deranged | 1992 |
| Mokum Records, Mokum Records | Fear Factory | 1997 |
| Moon Records (12) | Thanathron | 2010 |
| Moon Records (2) | Absu | 1997 |
| Moon Wheel Records | December's Fire | 1997 |
| Moonfog Productions | Gehenna | 1993 |
| Moonlight Records | Diabula Rasa | 2010 |
| Morbid Generation | Waco Jesus | 2009 |
| Morbid Noizz Productions | Amorphis | 1995 |
| Mórbida Productions | Masacre | 2012 |
| Mordgrimm | Arkhon Infaustus | 1998 |
| Moribund Records | Sargeist | 2008 |
| Morningside Records (2) | Modern Funeral Art | 2006 |
| Mort Productions | Dying Fetus | 2002 |
| Mortal Sin Records | Mortal Sin | 2007 |
| Morte Secca | Fear Of God | 2006 |
| Motor / Urban / Def Jam Group | Apocalyptica | 2003 |
| Motor Music GMBH | Rammstein | 2000 |
| Motor Music, Motor Music, Motor Music, Motor Music, Motor Music, Motor Music | Rammstein | 1998 |
| Motown | Judas Priest | 1975 |
| MP3 Music Collection | Royal Hunt | 2006 |
| MP3.com | Inkubus Sukkubus | |
| MP3SERVICE | Abigor | 2004 |
