- 1 ONE OK ROCK
- 2 OH MY GIRL
- 3 Official髭男dism
- 4 ONEUS
- 5 Orange Caramel
- 6 OMEGA X
- 7 OxT
- 8 ONEWE
- 9 ONF
- 10 Orange Range
- 11 OnlyOneOf
- 12 Omoinotake
- 13 OCTPATH
- 14 Obroject
- 15 ORESAMA
- 16 ODD YOUTH
- 17 ONE☆DRAFT
- 18 OuiOui
- 19 OH MY GIRL BANHANA
- 20 ODD EYE CIRCLE
- 21 Organic Stereo
- 22 offonoff
- 23 OKAMOTO'S
- 24 Only this time
- 25 OLDCODEX
- 26 ONE LOVE ONE HEART
- 27 Oreskaband
- 28 OTMGirls
- 29 onelifecrew
- 30 ONE OR EIGHT