| 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 |
|---|---|---|
| Mechanic Records, Mechanic Records | Dream Theater | 1989 |
| Media America | Alice In Chains | 1996 |
| mediacs AG | Manowar | 2002 |
| Mega Czad | Ahrimah | 1993 |
| Mega Metal Productions | Mortal Sin | 1997 |
| Mega Rabbit Recordings | Brutality | 2002 |
| Megadisc | Bill Laswell | 1984 |
| Megaforce Records | Anthrax | 1983 |
| Megaforce Worldwide | Anthrax | 1988 |
| Megaforce Worldwide, Atlantic | Overkill | 1990 |
| Megarock Records | Landberk | 1994 |
| Megaton Records (3) | Ulver | 2004 |
| Melancholia Records | Orakle | 2005 |
| Membran Music Ltd. | Tangerine Dream | 2010 |
| Membran Music Ltd., Documents | Tangerine Dream | 2009 |
| Merciless Records | Maze Of Torment | 2002 |
| Mercury | Anthrax | 1975 |
| Mercury Classics, Deutsche Grammophon | Tori Amos | 2014 |
| Mercury, Bludgeon Riffola | Def Leppard | 1993 |
| Mercury, Chronicles, UMe | Thin Lizzy | 2006 |
| Mercury, Polygram | Deep Purple | 1984 |
| Mercury, Polygram Finland Oy | Apocalyptica | 1998 |
| Mercury, Polygram Finland Oy, Zen Garden Records | Apocalyptica | 1996 |
| Meta Records | Bill Laswell | 2000 |
| Metal 13, XIII Bis Records | Loudblast | 1999 |
