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

Offensive Records

unknown

Offensor Recordings

unknown

Offering Records

France

Offerings Of Flame Productions

United-Kingdom

Office Kuroneko

unknown

Office Lacroix

Japan

Office4music

Austria

Officina Rock Records

Italy

OFFmusic

Poland

Offside Records

France

Offtime Records

USA

Ofheathenblood

United-Kingdom

OGA Productions

unknown

Ogham Records

Portugal

Oghmi Records

Mexico

Oglio Records

USA

Ogmios Underground

France

Ogorekords

Germany

Ogre Records

Italy

Ogro Records

Peru

Oh Boy

Luxembourg

Oh Damn! Productions

Portugal

Oh My Gore! Productions

Brazil

OH-Producciones

unknown

Ohev Records

USA

Ohlone Recordings

USA

OHM Digital Recordings

unknown

Ohm Resistance

USA

Ohne Maulkorb Production

Austria

Ohne Vertrag

unknown

Ohr

Germany

Ohrwaschl Records

Germany

Ohrwurm Records

Germany

Oi Punk Records

unknown

Oihuka Records

Spain

Oil Duck Records

unknown

Oisin Productions

Canada

Oitava Produções

Brazil

OK Records

Spain

OK-Musica

Austria

Okaleczenie

Poland