- 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 ONF
- 9 Orange Caramel
- 10 OxT
- 11 OnlyOneOf
- 12 Omoinotake
- 13 OMEGA X
- 14 offonoff
- 15 OCTPATH
- 16 ORESAMA
- 17 OLDCODEX
- 18 Orange Range
- 19 ON/OFF
- 20 Orange Pekoe
- 21 Oreskaband
- 22 ONE☆DRAFT
- 23 OFFROAD
- 24 ODD EYE
- 25 Oneway
- 26 OKAMOTO'S
- 27 OVER ACTION
- 28 OCEANLANE
- 29 One Piece
- 30 One Buck Tuner