OBITUARY (US)

OBLITERATION (NO)

OBSCURA (DE)

OBSCYRIA (SWE)

OBSESSÖR (DE)

OCCULTATION (US)

OCEAN, The (DE)

OCTOBER TIDE (SWE)

ODENWRATH (SWE)

OFERMOD (SWE)

Of The Wand & The Moon (DK)

O KULT (SWE)

OLD FUNERAL (NO)

ONDSKAPT (SWE)

ONE HOUR HELL (SWE)

ONE MAN ARMY AND THE UNDEAD QUARTET (SWE)

One Way Mirror (FR)

ONHEIL (NL)

OPEN SURGERY (SWE)

OPETH (SWE)

ORANGE GOBLIN (UK)

ORANSSI PAZUZU (FI)

ORDER (NO)

ORDER OF ISAZ (SWE)

Ordo Rosarius Equilibrio (SWE)

ORIGIN (US)

ORPHEUS OMEGA (AUS)

OSCULUM INFAME (FR)

OUTER LIMITS , The (BG)

OVERKILL (US)

OVERTORTURE (SWE)

OXIDE (SWE)

OZ (SWE/FI)