| 26 | OneRepublic |
| 27 | Onyx |
| 28 | Oomph! |
| 29 | Opasnie DJs |
| 30 | Operatica |
| 31 | Opium project feat. Руки Вверх |
| 32 | Optical, Matrix, Ed Rush |
| 33 | Optics |
| 34 | Opus |
| 35 | Orchestral Manoeuvres In The Dark |
| 36 | Ore Ska Band |
| 37 | Original Score |
| 38 | Oscar Benton |
| 39 | OST |
| 40 | OST-K-PAX |
| 41 | Ottawan |
| 42 | Otto Dix |
| 43 | Outcast |
| 44 | Outkast |
| 45 | Outkast feat. Snoop Dogg |
| 46 | Outlandish |
| 47 | Outwork Feat Mr. Gee |
| 48 | Overkill |
| 49 | Owl City |
| 50 | Ozzy Osbourne |