| Şehir | Eyalet, İl, Bölge |
|---|
| ›Obi | Nasarawa› |
| ›Obiagu | Ebonyi› |
| ›Obiaku | Abia› |
| ›Oboakpu | Rivers› |
| ›Obohia | Abia› |
| ›Oboro | Abia› |
| ›Odagba | Rivers› |
| ›Odagba | Rivers› |
| ›Ode | Ekiti› |
| ›Odo | Ekiti› |
| ›Odo-Igbira | Ekiti› |
| ›Odo-Owa | Ekiti› |
| ›Odoro Ikpe | Akwa Ibom› |
| ›Odu | Nasarawa› |
| ›Ofale | Ekiti› |
| ›Ofin | Lagos› |
| ›Ogbomosho | Oyo› |
| ›Ogo Ubi | Ebonyi› |
| ›Ogu | Akwa Ibom› |
| ›Ogu Bolo | Rivers› |
| ›Ohafia | Abia› |
| ›Ohambele | Abia› |
| ›Ojo | Lagos› |
| ›Oke Mesi | Ekiti› |
| ›Oke Onigbin | Kwara› |
| ›Okene | Kogi› |
| ›Okolloma | Rivers› |
| ›Okon | Abia› |
| ›Okpo-Ezi | Ebonyi› |
| ›Okposi | Ebonyi› |
| ›Olugbogbene | Bayelsa› |
| ›Omu-Aran | Kwara› |
| ›Omuo | Ekiti› |
| ›Omupo | Kwara› |
| ›Ondo | Ondo› |
| ›Onitsha | Anambra› |
| ›Opobo | Akwa Ibom› |
| ›Opugbene | Bayelsa› |
| ›Ora | Ekiti› |
| ›Orin | Ekiti› |
| ›Orozo | Abuja (Federal Capital Territory)› |
| ›Orunro | Ekiti› |
| ›Osan | Ekiti› |
| ›Oshogbo | Osun› |
| ›Osi | Ekiti› |
| ›Osun | Ekiti› |
| ›Otun | Ekiti› |
| ›Oturkpo | Benue› |
| ›Owerri | Imo› |
| ›Owo | Ondo› |
| ›Oye | Ekiti› |
| ›Oyo | Oyo› |
| ›Ozu Abam | Abia› |
| ›Ozu-Item | Abia› |
