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