Nigéria
Países do mundo
O
- (Oluyole) Osonde
- (Abeokuta North) Osi-Mola
- (Osisioma Ngwa) Oso Okwa
- (Ona Ara) Osin
- (Odogbolu) Ososa
- (Ideato North) Osina
- (Akoko-Edo) Ososo
- (Ikole) Osin-Ikole
- (Ifo) Ososun
- (Eket) Osiok
- (Olorunsogo) Osowuelegan Iju
- (Ndokwa East) Ossissa-Stat
- (Ogbaru) Osomari
- (Ugwunagbo) Osusu Aku
- (Ibaji) Ota
- (Abua/Odual) Otaba
- (Kabba/Bunu) Otafun
- (Ogo Oluwa) Otamakun
- (Izzi) Otamnkaliki
- (Isuikwuato) Otampa
- (Obokun) Otan-Ile
- (Konshisha) Otape
- (Nembe) Otatubu
- (Ori Ire) Ote
- (Akinyele) Oteda
- (Ughelli South) Otor-Edo
- (Asa) Ote-Etile
- (Ethiope East) Otefe
- (Atiba) Otefon
- (Abeokuta North) Otegbade