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