ADEILMNOU O Oba Oba-Aboji Oba-Umulokpe Obagwe II Obeledu Obene Obodola Obosi Obulo-Eziama Ochuche-Umuodo Odekpe Odida Odugiri Obagwe Ogbekuma Ogboji Ogboro Ogbu Ogbunka Ogbunu Ogene Ogidi Ogu-Ikpele Oguaniocho Oka Okohia Okpulukpu Okpuno-Awka Omo Omoaokogbo Onen Onitsha Onoia Onono Orifite Orifta Orkija Oroma Etiti Oronia-Utu Orsuihiteukwa Orsumeyin Orsumoghu Oshita Osiam Osomari Osonachu Osu Osu-Umuezekpe Osuakwa Otu Otuocha Otuta Ozubulu ADEILMNOU