O-6
- Owen Doan
- Owen Ovadoz
- Owen Temple
- Owl
- Owl City
- Owl John
- Owl Paws
- Owlle
- Owls
- Owls By Nature
- OWS
- OX4ORD
- Oxana
- Oxford Collapse
- Oxford Drama
- Oxi
- Oxia
- Oxide & Neutrino
- Oxlade
- Oxmo Puccino
- Oxmo Puccino feat. K-reen
- Oxo 86
- Oxygen
- Oxygene
- Oxymoron
- OY
- Oyann
- Oye Hoye
- Oystar
- Oyster Prairie
- Oysterband (The)
- Oz Noy
- Ozan
- Ozan Doğulu
- Ozark Henry
- Ozi Noor
- Oziel Popoca
- Ozkar Zulu
- Ozma
- Ozomatli
- Ozuna
- OZVN
- Ozymandias
- Ozz - 01
- Ozzi
- Ozzie Nelson
- Ozzy Osbourne
- OZZY OZBOURNE
- Մալենա (Maléna)
