- 1 Olly Murs
- 2 Ozzy Osbourne
- 3 OMFG
- 4 Offset
- 5 Oliver Tree
- 6 Omar Akram
- 7 OMER DEEP
- 8 Odetari
- 9 Ogryzek
- 10 Omar
- 11 Ola
- 12 Outertone
- 13 ONR
- 14 Omar Rudberg
- 15 Oliver Scheffner
- 16 Ozuna
- 17 OIJ
- 18 Omah Lay
- 19 Oliver Shanti
- 20 orb1t
- 21 Otto A. Totland
- 22 Offer Nissim
- 23 Original Motion Picture Soundtrack
- 24 Omarion
- 25 Obie Trice
- 26 Oscar Peterson
- 27 Orlando Dixon
- 28 Otis Redding
- 29 Oscar Isaac
- 30 Omnia