- 1 ONE OK ROCK
- 2 OH MY GIRL
- 3 Official髭男dism
- 4 Orange Caramel
- 5 ONEWE
- 6 OnlyOneOf
- 7 ONEUS
- 8 OT
- 9 OxT
- 10 OuiOui
- 11 Orange Range
- 12 ON/OFF
- 13 Orange Pekoe
- 14 Oreskaband
- 15 OLDCODEX
- 16 ONE☆DRAFT
- 17 OFFROAD
- 18 ODD EYE
- 19 Oneway
- 20 OKAMOTO'S
- 21 OVER ACTION
- 22 OCEANLANE
- 23 One Piece
- 24 One Buck Tuner
- 25 ONEPERCENTRES
- 26 OVERGROUND ACOUSTIC UNDERGROUND
- 27 Onion Project
- 28 OGRE YOU A**HOLE
- 29 one more chance
- 30 oAiii & oAiii