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