| 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 |
|---|---|---|
| London Records, Go! Beat | Portishead | 1997 |
| London Wavelength | Genesis | 1982 |
| Look At You Records | M.O.D. | 2006 |
| Lou & Rocked Boys | Blindead | 2009 |
| Loud Now Network | Beheading Machine | 2011 |
| Loud Out Records | Violent Dirge | 1995 |
| Lumina Records Ltd. | John Zorn | 1983 |
| Lunasylum | Simulacra | 2011 |
| Lunatic Asylum (2) | Sad Dolls | |
| Lynx Music | Uistiti | 2008 |
| M.I.L. Multimedia | Bill Laswell | 1996 |
| M.O.D. Technologies | Bill Laswell | 2012 |
| Machineries Of Joy | Ionic Vision | 2005 |
| Machinist Records | Diffuzion | 2007 |
| Mad Lion Records | Be Fading Fast | 1999 |
| Madison Gate Records | Christopher Young | 2011 |
| Magan Records | Convulse | 1994 |
| Magic Arts Publishing | Rotting Christ | 2009 |
| Magic Circle Entertainment | Manowar | 2013 |
| Magic Circle Music | Manowar | 2008 |
| Magic Sign E. N. T. | Helloween | 2003 |
| Magik Art Entertainment | Redemptor | 2007 |
| Magna Carta | Dali's Dilemma | 1999 |
| Magnum | Rhapsody | 2012 |
| Magnum Music | Sepultura | 2003 |
