Katalog wytwórni
- O Brother
- O Genesis
- O Music
- O Poil Productions
- O-Cetera
- O.A.P Records
- O.B.S.E.
- O'Bannon Records Inc.
- Oa2 Records
- Oad Music
- Oaiko
- Oak
- Oak Company
- Oak Island Records
- Oaken Palace
- Oaken Shield
- Oap Records
- Oarfin
- Oath
- Oba Prod.
- Obatala
- Obe
- Obi Music
- Objet Disque
- Objet-A Records
- Oblio
- Oblivion
- Obscura
- Obscure Alterna
- Obsessions
- Obsessive
- Obygd Produktion
- Oc
- Ocarina
- Occultation
- Ocean Alley
- Ocean Count Records
- Ocean Drive
- Ocean Omen
- Ocean Street
- Ocelots Music
- Ocha
- Ocho
- Ocho Mule
- Ocium
- Ocora
- Octatonic
- Octave
- Octave 8
- Octavia
- Octoprod
- Octopus
- Octopus Publishing Group
- Octopus Rising
- Odaglass Llc
- Odc
- Odd Cat Records
- Odd Future
- Odd Sk Recordings
- Odda Recordings
- Oddworld Records
- 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
- Officine Della Cultura
- Offshore
- Offti
- Ofnot
- Ofpop
- Ofs
- Oglio
- Ogoprod
- Ogun Afrobeat
- Ogun Recording Ltd.
- Oh Boy
- Oh Hellos
- Oh Many Music
- Oh Wow Dang
