Katalog wytwórni
- O Brother
- O Genesis
- O Music
- O Poil Productions
- O-Cetera
- O.4.M
- O.A.P Records
- O.B.S.E.
- O'Bannon Records Inc.
- Oa2 Records
- Oad Music
- Oak
- Oak C
- Oak Island Records
- Oaken Palace
- Oap Records
- Oar
- Oarfin
- Oath
- Oba Prod.
- Obe
- Obelisk
- Obi Music
- Objet-A Records
- Oblio
- Oblivion
- Obscura
- Obscure Alterna
- Obsessions
- Obsessive
- Obygd
- Oc
- Ocarina
- Occii
- Occultation
- Ocean Alley
- Ocean Drive
- Ocean Omen
- Ocean Street
- Ocean Wave
- Ocelots Music
- Ocha
- Ocho
- Ocho Mule
- Ocium
- Ocora
- Octatonic
- Octave
- Octave 8
- Octavia
- October
- Octoberxart
- Octoprod
- Octopus
- Octopus Publishing Group
- Octopus Records
- Odaglass Llc
- Odd Cat Records
- Odd Funk
- Odd Future
- Odd Sk Recordings
- Odda Recordings
- Ode
- Odeon
- Odessa
- Odin
- Odionlivingstone
- Odium
- Odl Music
- Odradek
- Odyssey
- Odyssey Music Network
- Oehms
- Of Naked Design Ltd
- Of the Edge
- Ofertas
- Off
- Off Label
- Off Records
- Off the Hook Records
- Off the Record
- Off the Record Label
- Off Ya Tree
- Off Yer Rocka
- Offen
- Offen Music
- Office
- Officina Fonografica Italiana
- Officine Della Cultura
- Offshore
- Offsiderz
- Offti
- Oficial Arquivos
- Ofnot
- Ofpop
- Ofs
- Og Records
- Oglio
- Ogoprod
- Ogun Afrobeat
