Regions of Nigeria
- Obosokoto
- Obosi
- River Obosh
- Obor Ovoro
- Oboroko-Nla
- Oboroko
- Oboro
- Oboro
- Oboro
- Obor
- Obonukwa
- Obo Ntong
- Obono-Okpodo
- Obonoma
- Obong
- Obong
- Obon Ebot
- Obamuwasan Camp
- Obomkpa
- Obom Itiat
- Obolo-Eke (1)
- Obolo-Eke
- Obollo-Afor
- Obolo
- Obolo
- Obolimi
- Obokwe
- Obokwe
- Obokwe
- Obokum
- Obokpa
- Ugboklo
- Obojona
- Obo-Ile
- Obohia
- Obohia
- Obohia
- Obogu
- Ogbogoro
- Obogo
- Obofia
- Obo Etok
- Obodola
- Obodo
- Obodo
- Obodio
- Oboda
- Oboama-Nguru
- Oboama
- Obakpu
- Obo-Aiyegunle
- River Obo
- Obo
- Obe
- Obizi
- Obiyi River
- Obiyelu
- Obite
- Obisesan
- Obiribe
- Obiri
- Obio-Usiere
- Obior
- Obi-Onikegu
- Obioma
- Obioku
- Obioko
- Obio Iyata
- Obiohuru
- Obiohoro Osu
- Obiohia Ihenzu
- Obiohia
- Obuohia
- Obiogo
- Obiofu
- Obinze
- Obinto
- Obinomba
- Obinefu-Nenwe
- Obinagu
- Obinago
- Obina
- Obimo
- Obilokwu Mbieri
- Obikwele
- Obike
- Obi-Iduhon
- Amafor
- Obigbo
- Obiga
- Obi Forest Reserve
- Obieze
- Ubierumu
- Obiene
- Obiekwesu
- Obi Ekwensu
- Obiebe
- Obidugbo
- Ogbidi
- Obideyi
- River Obibia
- Obibi
- Obibi
- Obiata
- Obiaruku
- Obi-Anyima
- Obianga
- Obiama
- Obeaka
- Obiakpa
- Obiakambu
- Obiakabi
- Obiagwulu
- Obiagu-Mebi
- Obiagu
- Ezza-Obeagu
- Obiago
- Obia
- Obi
- Obeyin
- Obetim-Uno
- Obete Uku
- Obetegana
- Obete
- Obete
- Obete
- Oberi
- Obe-Nla
- Obenibokiri
- Obenevbueribo
- Obendegana
- Obena
- Oben
- Obelle
- Ogbele
- Obeleli
- Obeledu
- Obele River
- Obele
- Obele
- Obeki
- Obeke
- Ogbeinyama
- Obedum
- Obedu
- Obedamagu
- Obebe
- Obeagu
- Obeagu
- River Obe
- River Obe
- Obe
- Obe
- Obe
- Obazuwa
- Obazua
- Obazagbon-Nugu
- Obazagbon
- Obayantor
- Obayantor
- Obayanta
- Oba-Umulokpe
- Obate
- Obate
- Obate
- Obate
- Obatade
- Obaretin
- Obarenren
- Obarekkai
- Oba-Offa
- Obanyotor
- Obansuwa
- Obanlike
- Obanla
- Obaninsa
- Oban Hills
- Oban Group Forest Reserve
- Obangedde
- Obang
- Obanaghoro
- Oban
- Obamoro
- Obamahan
- Obama
- Obalende
- Obalemo
- Obale-Jugbe
- Obala
- Ogbaku
- Obagie
- Obajanrin
- Obajana
- Oba-Imala
- Oba-Ile
- Oba Igbo-Ora
- Oba Hill Forest Reserve
- Oba Hill
- Oba Hill
- Odugiri Obagwe