Cities in Nigeria

Ogwashi-Uku
Ohafia-Ifigh
Oji River
Ojota
Ojoto
Oju
Oka
Okada
Oke Ila
Oke Mesi
Oke-Agbe
Oke-Ikpe
Oke-Oyi
Okehi
Okeho
Okene
Okigwe
Oko Ita
Okopedi
Okoroete
Okpo
Okpoga
Okpoma
Okpuala-Ngwa
Okrika
Okuku
Okuta
Okwe
Oleh
Olupona
Omoba
Omoku
Omu-Aran
Omuo-Ekiti
Ondo
Onitsha
Onuebonyi Echara
Onueke
Onyedega
Opi
Opobo
Oporoma
Ore
Orerokpe
Orita Eruwa
Orlu
Orodo
Oron