| Rita Ora | PopSoundtrackDance musicRap | 20 |
| Ofenbach | Dance musicPopElectronic music | 8 |
| Oleg Krikun | Pop | 1 |
| O.Torvald | Rock | 1 |
| Otis Redding | Soul | 1 |
| Ozuna | PopWorldRapDance musicReggae | 19 |
| Offset | Rap | 5 |
| Matt OX | Rap | 1 |
| Oxxxymiron | Rap | 5 |
| Paige O'Hara | Soundtrack | 1 |
| OG Buda | Rap | 4 |
| Obladaet | Rap | 2 |
