| Old School Junkies 2 |
| Old School Players |
| Old Town Mafia |
| Old World Disorder |
| OLDCODEX |
| Oldelaf |
| Oldfield Mike |
| Oldie Börse |
| Ole |
| Ole "Fessor" Lindgreen |
| Ole Hansen |
| Ole Kock Hansen |
| Olé Olé |
| Ole Paus |
| Ole Stolle |
| Ole-E |
| Ole-ole the world kita juara |
| Oleander |
| Oleg Frish |
| Oleg Lundstrem |
| Oleg Lundstrem Orchestra |
| Olene Kadar |
| Olesya Rulin |
| Oleta Adams |
| Oletha Carter |
| Olexesh |
| Olga Guillot |
| Olga Konkova |
| Olga Merediz |
| Olga San Juan |
| Olga Scheps |
| Olga Tañón |
| Olgun Simsek |
| Oli |
| Oli Fox |
| Oli G. |
| Oli P. |
| Oli Sykes |
| Olimpo Cardenas |
| Olive |
| OLIVE & MOI |
| Olive et Moi |
| Oliver |
| Oliver |
| Oliver $ |
| Oliver (junior eurosong 2008) |
| Oliver A. Branch, III |
| Oliver and Company |
| Oliver Baxxter |
| Oliver Cast Ensemble |
| Oliver Cheatham |
| Oliver Chesler |
| Oliver Darley |
| Oliver Dragojevic |
| Oliver Eng |
| Oliver Frost |
| Oliver Gannon |
| Oliver Geissen |
| Oliver Gilbert |
| Oliver Gottwald |
| Oliver Grimm |
| Oliver Hart |
| Oliver Heldens |
| Oliver Huntemann |
| Oliver Ingrosso |
| Oliver Jackson |
| Oliver Jackson Quintet |
| Oliver James |
| Oliver Jass |
| Oliver Jones |
| Oliver Jones Trio |
| Oliver Klein |
| Oliver Koletzki |
| Oliver Lake |
| Oliver Lake Steel Quartet |
| Oliver Mathisen |
| Oliver Moldan |
| Oliver Morgan |
| Oliver Nelson |
| Oliver Onions |
