- 1 欧阳菲菲
- 2 OLIVIA
- 3 OSTER project
- 4 OOHYO
- 5 Osanzi
- 6 OH!nle
- 7 Oran-G
- 8 Ora
- 9 ONE
- 10 OKI
- 11 Only You
- 12 OVCOCO (오브코코)
- 13 Odd Time
- 14 OHNEW
- 15 onsu
- 16 OYEON (오연)
- 17 Obze (오브제)
- 18 OA
- 19 OPENN (오픈)
- 20 欧若拉
- 21 onthedal
- 22 OoOo
- 23 Oo
- 24 OUL (오울)
- 25 Okayuka
- 26 Offing (오핑)
- 27 OKEY W
- 28 ocsoosu
- 29 OMOIDE LABEL
- 30 OHDH (오드)