| Oleg Romanenko | Pop | 1 |
| The Otto Sieben Orchestra | Instrumental musicPop | 1 |
| Olga Tezelashvili | Pop genreJazz | 1 |
| Oleg Kvasha | Pop | 1 |
| Sons of Legion | PopPop RockRockCountry music | 5 |
| Joan Osborne | PopRockPop Rock | 2 |
| Andrey Obidin | Instrumental musicPop | 1 |
| Olson | PopRap | 1 |
| Kelly Osbourne | Rock | 1 |
| Oskar med k | Electronic music | 1 |
| Böhse Onkelz | RockHard rock | 1 |
| Space One | PopRap | 1 |
