- 1 Olly Murs
- 2 Owen
- 3 OMFG
- 4 Omar Akram
- 5 Ozzy Osbourne
- 6 Oliver Tree
- 7 Ogryzek
- 8 Omar
- 9 One True God
- 10 OMER DEEP
- 11 Offset
- 12 Ozuna
- 13 Odetari
- 14 Omar Rudberg
- 15 Oliver Frank
- 16 Obie Trice
- 17 Owsey
- 18 Otis Redding
- 19 Oscar Yuan
- 20 Oliver Scheffner
- 21 Ozielzinho
- 22 Otter Berry
- 23 Offer Nissim
- 24 Omi
- 25 ONR
- 26 Ookay
- 27 ohsobrkn
- 28 Oscar Peterson
- 29 OJAX
- 30 Orjan Nilsen