- 1 欧阳菲菲
- 2 OLIVIA
- 3 OSTER project
- 4 OOHYO
- 5 欧若拉
- 6 OVCOCO (오브코코)
- 7 OoOo
- 8 Osanzi
- 9 Otomania
- 10 OH!nle
- 11 Oran-G
- 12 Ora
- 13 ONE
- 14 OKI
- 15 Only You
- 16 Odd Time
- 17 okogeeechann
- 18 OHNEW
- 19 oiko
- 20 onsu
- 21 OYEON (오연)
- 22 Obze (오브제)
- 23 OA
- 24 OPENN (오픈)
- 25 onthedal
- 26 On1ynn_
- 27 Oo
- 28 OUL (오울)
- 29 ODD-CAT (오드캣)
- 30 Okayuka