| Alex Swings Oscar Sings! | PopDance music | 1 |
| Orso | PopDance musicElectronic music | 1 |
| Olly Murs | PopBard music | 2 |
| BUMP OF CHICKEN | Rock | 1 |
| Onett | SoundtrackInstrumental music | 1 |
| The Axis of Awesome | Pop | 1 |
| Olia Tira | PopDance music | 1 |
| Mike O'Donnell | Soundtrack | 1 |
| Oleg Akkuratov | Pop | 1 |
| Ost+Front | Heavy metalRock | 1 |
| Children's Choir of Igor Krutoy 'New Wave' | PopChildren's song | 2 |
| OMI | PopReggae | 1 |
