| № | Исполнитель | Количество песен |
|---|---|---|
| 1 | O-Zone | 11 |
| 2 | Oasis | 56 |
| 3 | Ocean Drive | 1 |
| 4 | Ocean Drive & Dj Oriska | 10 |
| 5 | Oceana | 34 |
| 6 | Offspring, The | 90 |
| 7 | OK Go | 14 |
| 8 | One Block Radius | 1 |
| 9 | One Republic | 26 |
| 10 | Onyx | 53 |
| 11 | Oomph! | 134 |
| 12 | Opera IX | 5 |
| 13 | Opium Project | 4 |
| 14 | Orbital | 14 |
| 15 | Orgy | 32 |
| 16 | Others, The | 1 |
| 17 | Ottawan | 16 |
| 18 | Ottmar Liebert | 53 |
| 19 | OutKast | 50 |
| 20 | Outwork & Mr Gee | 1 |
| 21 | Overkill | 137 |
| 22 | Ozzy Osbourne | 100 |