- 1 OCTOBER
- 2 Outsider
- 3 Orangestar
- 4 ONE
- 5 Otokaze
- 6 OVAN
- 7 OdAkEi
- 8 Osshun Gum
- 9 OFA
- 10 Okasian
- 11 Onoken
- 12 otetsu
- 13 Ourealgoat
- 14 OSUN
- 15 oceanfromtheblue(오션)
- 16 O3ohn
- 17 Oh Hee Jun
- 18 Otamania
- 19 Od Rhomp
- 20 oygli
- 21 OLOGI
- 22 Optical Eyez XL
- 23 O!Gon
- 24 Owol
- 25 OWL/茶柱直哉
- 26 OOPARTZ
- 27 oscar
- 28 ONSEEON
- 29 Odd95
- 30 OSSH