- 1 ONE OK ROCK
- 2 OH MY GIRL
- 3 Official髭男dism
- 4 ONEUS
- 5 Orange Caramel
- 6 OMEGA X
- 7 ONEWE
- 8 Orange Range
- 9 ONF
- 10 Omoinotake
- 11 OnlyOneOf
- 12 ONE N' ONLY
- 13 ONE OR EIGHT
- 14 offonoff
- 15 ODD YOUTH
- 16 ONE☆DRAFT
- 17 ON/OFF
- 18 Orange Pekoe
- 19 Oreskaband
- 20 OLDCODEX
- 21 OFFROAD
- 22 ODD EYE
- 23 Oneway
- 24 OKAMOTO'S
- 25 OVER ACTION
- 26 OCEANLANE
- 27 One Piece
- 28 One Buck Tuner
- 29 ONEPERCENTRES
- 30 OVERGROUND ACOUSTIC UNDERGROUND