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