| Name | Total | ... |
|---|---|---|
| Okinawa Taieki Gunjinkai | 3 | GO |
| Okiraku-tei | 1 | GO |
| OKKI | 1 | GO |
| Okkinoko | 1 | GO |
| Okosama Lunch | 1 | GO |
| Okujo Kantorera | 1 | GO |
| Old School Academy | 1 | GO |
| Old Weapon | 5 | GO |
| oldwiseman | 4 | GO |
| O-Mars | 13 | GO |
| Omaru Bokujou | 1 | GO |
| Omatsurikibun | 1 | GO |
| Omchicken | 2 | GO |
| Omchiken | 1 | GO |
| Omega 2-D | 3 | GO |
| Omega Circuit | 1 | GO |
| Omega House | 1 | GO |
| OMEGA Star | 11 | GO |
| Omiotsuke | 1 | GO |
| Omizuya | 1 | GO |
| Ommed | 0 | GO |
| Omocha Kaden | 5 | GO |
| Omochi | 3 | GO |
| Omochi Bazooka | 1 | GO |
| Omodume | 6 | GO |
| Omoiukabi | 1 | GO |
| Omoshiro Usagi | 1 | GO |
| OMS | 1 | GO |
| On Your Mark | 1 | GO |
| Onagoya | 18 | GO |
| Once Only | 7 | GO |
| Ondo | 4 | GO |
| One Night Stand | 6 | GO |
| One Shot | 1 | GO |
| One Way | 1 | GO |
| Oneekyou | 12 | GO |