- 1 Outsider
- 2 OCTOBER
- 3 Orangestar
- 4 Otokaze
- 5 ONE
- 6 Onoken
- 7 otetsu
- 8 O3ohn
- 9 OVAN
- 10 Okasian
- 11 Ourealgoat
- 12 Osshun Gum
- 13 oceanfromtheblue(오션)
- 14 Olltii
- 15 Odee
- 16 On.U
- 17 OLDE WORLDE
- 18 OneSun
- 19 Optical Eyez XL
- 20 Oki
- 21 osterreich
- 22 O!Gon
- 23 Owen Ovadoz
- 24 One Up (원업)
- 25 One Life
- 26 One
- 27 OFA
- 28 Owol
- 29 Ohwon Lee (진짜사나이)
- 30 OVER ARM THROW