| Zerrin Özer | Música étnica | 1 |
| OR3O | Soundtrack | 1 |
| Only The Family | Rap / hip-hop | 1 |
| Oaks | Música de bailePopMúsica electrónica | 1 |
| B.G. The Prince Of Rap | Eurodanza | 1 |
| New Kids On the Block | Pop | 2 |
| Olly Alexander | PopEurodanzaMúsica de baileSynth pop | 1 |
| Alessandro Olivato | Pop | 1 |
| Olivia Addams | Pop | 1 |
| Oksana Pochepa (Akula) | Pop | 1 |
| Ozoda | Pop | 1 |
| Kings of Günter | PopVariedades | 1 |
