| Donny Osmond | Soundtrack | 1 |
| Outkast | Rap / hip-hopR'n'BPop | 3 |
| Olivia Newton-John | SoundtrackPop | 3 |
| Ozzy Osbourne | Heavy metalRoca duraRockBalada | 10 |
| Jacques Offenbach | Clásica | 7 |
| Royal Philharmonic Orchestra | PopVariedadesSoundtrack | 3 |
| Band of Horses | Música alternativa / Rock alternativo | 1 |
| Vains of Jenna | Rock | 2 |
| The Presidents of the United States of America | Rock | 1 |
| Kings of Leon | RockMúsica alternativa / Rock alternativo | 5 |
| ONINO | Pop | 2 |
| Max Oazo | Música de baile | 1 |
