Katalog wytwórni
- Orchard
- Orchestre D'harmonie Des
- Orchid
- Orchid Classics
- Ordo McM
- Oread Records
- Oreade
- Orena
- Orenda Records
- Orfeo
- Orfeu
- Org
- Org Music
- Organ
- Oriel
- Orient
- Oriental
- Orientalissimo
- Oriente
- Oriente Musik
- Origin
- Origin Arts
- Origin Classical
- Origin Records
- Original
- Original Culture
- Original Jazz Classics
- Original Music
- Original Recordings Group
- Original Selection
- Original Sounds
- Orindal
- Orion
- Orion Home Video
- Orion Publishing Co
- Orisakayuta
- Orleans
- Ornaments
- Oroom
- Orphee
- Orpheia
- Orpheo
- Orthodox
- Oscilloscope Pictures
- Osj Records
- Oskar
- Osm
- Osmose
- Osmose Records
- Osmosis
- Osnaton Records
- Oso Polita
- Ostgut Ton
- Ostinato
- Ostron Records
- Ota Records
- Otamania Record
- Otc
- Other
- Other People
- Other People's Music
- Other Power
- Other Suns
- Other Tongues
- Other Voices
- Otherland Records
- Otherly Love Records
- Otherside
- Oti-O Records
- Otih Records
- Otis
- Otitis Media
- Otoroku
- Otosen
- Otsb
- Otsego Entertainment Group
- Ouch!
- Ouch! Records
- Ouest
- Ouga Booga and the Mighty Oug Recordings
- Oui
- Oui Entertainment
- Oui Oui Music
- Ouie
- Our Distribution
- Our Gang Entertainment
- Our Massive Beauty
- Our Secret Record Company
- Our Silent Canvas
- Our Swimmer
- Ourness
- Ours
- Ours Co.
- Ous
- Out
- Out Here
- Out Here Records
- Out Label
- Out of Line
- OUT OF LINE
