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