- 哦哦
- Owl Vision
- O.G.C.
- Oak Pantheon
- Olan Mill
- Ok Go
- orbit over luna
- Ol Skool
- One Gud Cide
- O.C. Smith
- oaqk
- Ov Hollowness
- Orcas
- OFFROAD
- Om Unit
- Omnimotion
- Owl City Piano Tribute Players
- Omar Rodriguez-Lopez
- 欧阳莎莎
- Oslo Gospel Choir
- Overdream
- Obiymy Doschu
- Omala
- O Zone
- October Project
- Oblivians
- ONEPERCENTRES
- Oidupaa Vladimir Oiun
- O.S.I.
- Omega Lithium
- Osvaldo Pugliese
- Ocoai
- ong
- One To One
- Opera Babes
- Oh No Ono
- Oren Ambarchi
- Oscar Louise
- Osanna
- Ofra Harnoy
- Oysterband
- Olafur Arnalds
- Ozodbek Nazarbekov
- 欧阳小勇
- Ooze
- Orelha Negra
- 欧阳倩倩
- 欧光勋
- One Star Story
- One Be Lo
- Orson
- Ohio Express
- One Sonic Society
- Opossom
- Original London Cast
- Oslo Swan
- ONBC
- 欧阳德勋
- office muhmue
- One Night Only
- Omega Vibes
- ONE☆DRAFT
- Olga Tañón
- Olivia Ong ..
- Omer Avital
- Ohm-G
- Olympic Runners
- Oliver Mtukudzi
- Orquesta Revé
- OK Sweetheart
- Olga Peretyatko
- Onesta
- Oki Dub Ainu Band
- Opii
- OONA
- One Fifth
- Only Love Hurts
- Old Man River
- One Punch
- OMC
- Order from Chaos
- Owls of the Swamp
- Omar & the Howlers
- Orgone
- Opera IX
- Olivier Miller
- 欧阳俊
- Outcast
- Orden Ogan
- O Yuki Conjugate
