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