- 1 Okid
- 2 Osshun Gum
- 3 OFFVIVID
- 4 OSSH
- 5 OMSB
- 6 oceanfromtheblue(오션)
- 7 OSUM
- 8 Osama Ape
- 9 One Life
- 10 Odd garage
- 11 OVAN
- 12 ONSEEON
- 13 Option
- 14 Oei(오에이)
- 15 OVDL
- 16 ONDA
- 17 OTIKA
- 18 Outsider
- 19 Ourealgoat
- 20 oWHo
- 21 ONDD
- 22 Oki
- 23 Old Yearning
- 24 OLOGI
- 25 OTHANKQ
- 26 OSUN
- 27 OLNL
- 28 O!Gon
- 29 OlEO
- 30 OCTOBER