- 1 ObulKasim-Omar
- 2 oxygen
- 3 OSAD
- 4 Oliver Mtukudzi
- 5 Ombre2Choc Nation
- 6 Ori Kaplan
- 7 Out Of Order
- 8 Om Voices
- 9 OneMusic Record
- 10 Otro Nivel
- 11 Oxford Camerata
- 12 Osho
- 13 Ozodbek Nazarbekov
- 14 Ocean Blue
- 15 Ovhi Firsty
- 16 Omar Khairat
- 17 oui
- 18 Orange Blue
- 19 Oh Yeonju (153/Joombas)
- 20 Olbaid
- 21 OTO
- 22 Orezi
- 23 Ogie Alcasid
- 24 Oddkidout
- 25 OZMO
- 26 Omer Adam
- 27 Ozan Koçer
- 28 Omaha
- 29 Ocean Sounds
- 30 ODUCHU