Labels mit O (63)
Oak Knoll Productions
Oaken Shield
Obliteration Records
Oblivion
Obscene Productions
Tschechien
Obscure Abhorrence
Deutschland
Obscure Domain Productions
Obscure Musick
Observed/Observer Recordings
Obsidian Records
Odium Records
Polen
Off Records
Off Yer Rocka Recordings
Offerandum Records
office4music
Österreich
Old Goat Corpse Productions
Old Legend Productions
Old School Metal
Old Temple
Olde Tyme Records
Olympic Recordings
Omega Records
OMN Label Services
Omnipresence
Omvina
On Parole Productions
One 01
One Eyed Toad Records
One Life One Crew Records
One Little Indian
OneManArmy Records
OnFire Records
Onge Records
Deutschland
Oniric Records
Onslaught
Mexiko
Oomox Media
Open E Music
Open Grave Records
Open Media
Open Your Ears Music
Opoponax Records
Orchestrated Misery Recordings
Orden Records
Ordo MCM
Organized Crime
Orion Productions
Orphaned Records
Oscillation Music
Oscilloscope