- Ocean Colour Scene
- Oceana
- Oceansize
- October Fall
- Ocean
- October Project
- Oceans Of Sadness
- Octavia
- Occupied
- October Tide
- Oceanlab
- October 31
- Oceano
- OCEANLANE
- Oceans Ate Alaska
- Octafonic
- Oceans Divide
- Octopus
- Occult
- October Sky
- October Falls
- Oceanship
- Ocean Drive
- Octane
- Ocean Is Theory
- Octavia Sperati
- Oceans of Slumber
- Oceaan
- Octinomos
- Octave One
- Oceanside Soul
- Oceans Red
- Ocho Macho
- Oceanspeak
- Oceanics
- Ocultan
- Octobre
- Ocean Chief
- Océane
- October
- Oceana & Kim
- Oceans Apart
- Ocote Soul Sounds
- Oceans of Time
- Ocelotl
- Oceanic
- Oceanborn
- Octubre
- October File
- October Hill
- OCD
- Octagen & Arizona
- Ocean Voyager
- Océano de Sangre
- Occidens
- Ocho
- Ocarina
- Ochre
- October Country
- Octavian