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