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