| Outliers | PopDance music | 1 |
| Lyuba Orlova | Pop | 1 |
| Beth Orton | Pop | 1 |
| Roland Orzabal | Pop | 1 |
| Thirty Pounds of Bone | PopFolk | 1 |
| Eleven months of silence | Instrumental musicPopRockHard rock | 1 |
| Ouidad | Pop | 1 |
| Olaf der Flipper | PopPop genre | 1 |
| Vostochnyi Okrug | PopPop RockRock | 1 |
| Irma Otto | Classic | 1 |
| Onegin Gadzhikasimov | PopPop genre | 1 |
| Carlos Otero | PopPop genre | 1 |
