- 1 Olly Murs
- 2 Ozzy Osbourne
- 3 OMFG
- 4 Offset
- 5 Oliver Tree
- 6 Omar Akram
- 7 Odetari
- 8 Oliver Scheffner
- 9 OMER DEEP
- 10 Ola
- 11 Ozuna
- 12 Omi
- 13 Otto A. Totland
- 14 Otter Berry
- 15 Olly James
- 16 Olly Alexander
- 17 Ozielzinho
- 18 Omarion
- 19 Obie Trice
- 20 Oscar Peterson
- 21 Orlando Dixon
- 22 Otis Redding
- 23 Oscar Isaac
- 24 Omnia
- 25 Orjan Nilsen
- 26 Osunlade
- 27 Oliver Moldan
- 28 Ominus
- 29 Oliver Nelson
- 30 o'landa draper