- Oskorri -- Osny Silva
- OSO -- Ostkreutz
- Ostkurve -- Oswald
- Oswald 5-0 -- OTB
- OTB -- Otherbrother Daryl
- Otherfucka -- Otis Redding
- Otis Redding & Carla Thomas -- Otraslab
- Otro Nivel -- Otto Harbach
- Otto Hardwicke -- Ottomix
- Ottonero -- Ouly Zoo
- Oum -- Our Love to Stay
- Our Love Will Destroy the World -- Out of Ether
- Out Of Favor Boys -- Out of Line