| Zerrin Özer | World | 1 |
| OR3O | Soundtrack | 1 |
| Only The Family | Rap | 1 |
| Oaks | Dance musicPopElectronic music | 2 |
| B.G. The Prince Of Rap | EurodanceDance music | 2 |
| New Kids On the Block | Pop | 2 |
| Olly Alexander | PopEurodanceDance musicSynth-pop | 1 |
| Alessandro Olivato | Pop | 1 |
| Olivia Addams | Pop | 1 |
| Oksana Pochepa (Akula) | PopDance musicElectronic music | 3 |
| Ozoda | Pop | 1 |
| Kings of Günter | PopPop genreDance music | 2 |
