- Obtenebris
- Orange Juice
- Out of Eden
- Onslaught
- Operation Ivy
- Opal
- O.V. Wright
- Of the Vine
- Odd Future
- Olivier Bernet
- Oily Fish
- Obscure Dream
- Otis Clay
- Ornella Vanoni
- Outsider
- Om
- 欧俊诚
- Orelsan
- Old Man's Child
- Ohio State University Marching Band
- One Man Army And The Undead Quartet
- Oval
- Oumou Sangaré
- Olivia Byington
- Ornette
- Omar Akram
- Oudi3s
- OrangeCoffee
- Oasis[绿洲合唱团]
- Oingo Boingo
- OLIVE OIL
- Objekt
- Olivia
- Oleta Adams
- Orizen
- Overclass
- Ozielzinho
- Oise
- 欧阳文宸
- Ontama
- Oh, Sleeper
- One Voice
- Ozric Tentacles
- Offer Nissim
- One Two
- Olly Murs
- Orphx
- Orcaorca
- ORG Lounge
- 欧喷爱
- Ozzy Osbourne
- Otherwise
- OdeOnDreams
- One Minute Silence
- Orlando Consort
- OTAKU-ELITE Recordings
- Oracles Always Lie
- Omni Trio
- Olia Tira
- Omar
- One Way
- One Hour Before The Trip
- Ochre Room
- O X O X
- 欧莉莲
- Orquesta Escuela de Tango
- Old World Vulture
- Osvaldo Montes
- Orphanage[孤儿院]
- Of Norway
- Oh No
- Old and New Dreams
- Onno
- ON/OFF
- Os Mutantes
- Oblivion Machine
- O.P.P.A
- Ofer Bashan
- Orchestra Baobab
- One Shot
- Orba Squara
- Oh Alaska
- Oceanship
- Oni Ayhun
- 欧昌彬
- O'funk'illo
- Osibisa
- Old Blind Dogs
- 欧阳巽涛
- Oscar D'León
