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