Opus Nocturnales

Black Metal - Belgium

Opus Nocturne

Black Metal - Mexico

Opus Nocturnem

Black Metal - Brazil

Opus Profanus

Black Metal - Brazil

Opvs Nostri

Black Metal - Brazil

Oracle (ITA)

Black Metal - Italy

Oraison Funèbre

Black Metal - France

Orant

Black Metal - Czechia

Orbios

Black Metal - France

Orbis Daemonium

Black Metal - Brazil

Orchid (ITA)

Black Metal - Italy

Orcivus

Black Metal - Sweden

Orco

Black Metal - Brazil

Orcrist

Black Metal - Italy

Orcultus

Black Metal - Sweden

Orcus (GRC)

Black Metal - Greece

Orcus (PL)

Black Metal - Poland

Orcustus

Black Metal - Norway

Ord

Black Metal - Canada

Ordalie

Black Metal - France

Ordem Da Caveira

Black Metal - Other

Ordem Satânica

Black Metal - Portugal

Order

Black Metal - Norway

Order Of Bileth

Black Metal - USA

Order Of Darkness

Black Metal - USA

Order Of Leviathan

Black Metal - USA

Order Of Nosferat

Black Metal - Germany

Order Of Orias

Black Metal - Australia

Order Of Tepes

Black Metal - United-Kingdom

Order Of The Ebon Hand

Black Metal - Greece

Ordinance (FIN)

Black Metal - Finland

Ordinul Negru

Black Metal - Romania

Ordo Blasphemus

Black Metal - France

Ordo Draconis

Black Metal - Netherlands

Ordo Karnivorum

Black Metal - Russia

Ordo Nigris Imperia

Black Metal - Ecuador

Ordo Sanguinis Noctis

Black Metal - Poland

Ordo Spiritum Invictis

Black Metal - France

Ordo Templi Aeternae Lucis

Black Metal - France

Ordog (FRA)

Black Metal - France

Ordog (RUS)

Black Metal - Russia

Ordog (UK)

Black Metal - United-Kingdom

Ordoxe

Black Metal - Canada

Ordum

Black Metal - Lebanon

Orek

Black Metal - Germany

Orelisk

Black Metal - USA

Oremus

Black Metal - Poland

Orenda (BGR)

Black Metal - Bulgaria

Orga

Black Metal - USA

Organ Trails

Black Metal - Switzerland

Orgg

Black Metal - Italy

Orgiastic Perversion

Black Metal - Brazil

Orgrel

Black Metal - Italy

Orgy Of Carrion

Black Metal - USA

Orhorho

Black Metal - Italy

Oriflamme (BEL)

Black Metal - Belgium

Oriflamme (CAN)

Black Metal - Canada

Origami Galaktika

Black Metal - Norway

Original Sin (CHN)

Black Metal - China

Orion (UK-1)

Black Metal - United-Kingdom

Orion Belt

Black Metal - Russia

Ork

Black Metal - Spain

Orkteria

Black Metal - Norway

Orlog

Black Metal - Germany

Orlok (FIN)

Black Metal - Finland

Ormagna

Black Metal - Iceland

Ormgard

Black Metal - Sweden

Ornagar

Black Metal - Mexico

Ornaments Of Sin

Black Metal - France

Ornias

Black Metal - Sweden

Orob

Black Metal - France

Orodruin (NL)

Black Metal - Netherlands

Orodruin (USA-2)

Black Metal - USA

Oros Kau

Black Metal - Belgium

Orph

Black Metal - France

Orrery

Black Metal - Australia

Orrosta

Black Metal - Russia

Orthanc

Black Metal - France

Ortro

Black Metal - Italy

Ortsul

Black Metal - Poland

Ortus

Black Metal - Germany

Orve

Black Metal - Italy

Os-Croix

Black Metal - France

Oscult

Black Metal - Germany

Osculum

Black Metal - Mexico

Osculum Infame (FRA)

Black Metal - France

Osculum Infame (GRC)

Black Metal - Greece

Osculum Serpentis

Black Metal - France

Oscuridad

Black Metal - Colombia

Oscuros

Black Metal - USA

Oscurus Infernal

Black Metal - Ecuador

Ose

Black Metal - USA

Osiris (EGY)

Black Metal - Egypt

Oskal

Black Metal - Russia

Oskorei (GER)

Black Metal - Germany

Oskoreien

Black Metal - USA

Oskrnavitelj

Black Metal - Serbia

Osmose

Black Metal - Belgium

Osraige

Black Metal - United-Kingdom

Oss Nebes

Black Metal - Russia