- 1 ONE OK ROCK
- 2 OH MY GIRL
- 3 Official髭男dism
- 4 OMEGA X
- 5 ONE PACT
- 6 ONE OR EIGHT
- 7 ONEWE
- 8 ONEUS
- 9 Omoinotake
- 10 OnlyOneOf
- 11 Orange Caramel
- 12 offonoff
- 13 ONF
- 14 ONE N' ONLY
- 15 ORESAMA
- 16 OOM
- 17 OWV
- 18 ODD EYE CIRCLE
- 19 OxT
- 20 ONE☆DRAFT
- 21 OLDCODEX
- 22 OTMGirls
- 23 onelifecrew
- 24 OCTPATH
- 25 Orange Range
- 26 OH MY GIRL BANHANA
- 27 odol
- 28 Obroject
- 29 Organic Stereo
- 30 OKAMOTO'S