- 1 Orange Range
- 2 ONZ
- 3 ONE OR EIGHT
- 4 OWV
- 5 off the menu
- 6 Omoinotake
- 7 OuiOui
- 8 OKAMOTO'S
- 9 ONE LOVE ONE HEART
- 10 Orange Spiny Crab
- 11 O.A.Be
- 12 ONEGRAM
- 13 ONIGAWARA
- 14 ONIONRING
- 15 OFF EQUALS
- 16 OOSU:HAN
- 17 One For The Road
- 18 Official髭男dism
- 19 Ovall
- 20 ONEWE
- 21 ONF
- 22 ONE PACT
- 23 OH MY GIRL
- 24 Old English Sheepdog
- 25 ORSEAS
- 26 One Off Them
- 27 ONEUS
- 28 OFFROAD
- 29 ONE N' ONLY
- 30 OCTPATH