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