Obscvritas Pvtrefacta

Mexico

Obscvrvs Records

Italy

OBSE Productions

Greece

Observation Records

unknown

Observatory

unknown

Obsessed Records

unknown

Obsessed With Wickedness Records

USA

Obsession

unknown

Obsessive Fundamental Realism

Germany

Obsidian Factory Records

Japan

Obsidian Fortress Productions

Canada

Obsidian Records

Australia

Obsidian Sky Records

USA

Obsidian Spells

USA

Obskure Chaos

Brazil

Obskure Sombre Records

Canada

Obsolete Productions

Brazil

Obsolete Units

USA

Obstinacy

Brazil

Obuh Records

Poland

OCA Records

Spain

Occidental Records

United-Kingdom

Occult Antiquities

Canada

Occult Devotion

Germany

Occult Moon Records

Brazil

Occult Mountains Records

USA

Occult Records

Costa-Rica

Occult Roots Music

USA

Occult Sadism Records

Belgium

Occult Shop Productions

Italy

Occult Supremacy Productions

USA

Occult Whispers Records

USA

Occultelohim Productions

Mexico

Occultum

Italy

Occultum Productions

France

Occulture Records

USA

Ocean Records

USA

Oceanside Records

Italy

OCI Records

unknown

Ocinatas Industries

France

Octagon Music Group

Chile

Octane Records

Australia

October's Mist

unknown

Octone Records

USA

Octoprod

France

Octopus

Italy

Ocula Records

Canada

Ocular Music

Russia

Odal Rune

Belgium

ODAN Records

unknown

ODCB Music

Slovakia

Odd Future Records

USA

Odd Halo Recordings

USA

Oddriff Records

unknown

Ode Records

USA

Odelectric Records

unknown

Odeon

United-Kingdom

Odi Profanum Vulgus Et Arceo

France

Odiados

unknown

Odicanah Records

Costa-Rica

Odin Records

unknown

Odio Eterno Productions

Colombia

Odio Records

USA

Odio Sonoro

Spain

Odío Y Repulsión Records

Chile

Odiology Records

USA

Odious Recordings

Germany

Odium Generis Humani

unknown

Odium Proclamationis

Peru

Odium Productions (ESP)

Spain

Odium Productions (UKR)

Ukraine

Odium Records (PL)

Poland

Odium Records (UK)

United-Kingdom

Odmetnik

Serbia

Odour Of Death Records

unknown

ODP

unknown

ODS

unknown

Odyssey Music Network

Germany

Of Corpse Records

Paraguay

Of Crawling Shadows Records

Germany

Of Field

Japan

Of God's Disgrace Productions

Canada

Of Pure Blood

unknown

Of The North Records

USA

Of Wood And Iron Productions

Denmark

Off Beat

Germany

Off Me Nut Records

United-Kingdom

Off Records

Finland

Off Road Records

Canada

Off The Board Records

USA

Off The Disk Records

Switzerland

Off The Hip Records

Australia

Off The Map Records

USA

Off The Record Label

Netherlands

Off The Records (IDN)

Indonesia

Off The Records (USA)

USA

Off Time Records

unknown

Off Yer Rocka Recordings

United-Kingdom

Off-Limit Records

unknown

Offense Records

Estonia