AEILMNOU O Obe Obiago Obimo Obinagu Obinefu-Nenwe Obioma Obolo-Eke (1) Obuagu Obukpa Obule-Inyi Ogbaku Ogbaku-Ndiagu Ogbede Ogbo-Uvuru Ogbodu-Aba Ogboli Ogo-Ndago Ogugu Ogunta Oha Ohali-Achi Ohebo Ohum Oji River Oji River Settlement Ojinato Ojjor Okinano Okpakeke Okpara Coal Mine Okpata Okpatu Okpogho Okposi Okpu Okpueze-Umumba Okpuwo-Imeze Okuje Olo Omudi Onitsha Mediumwave Transmitter Onoli Onuba Opi Orba Oruku Osu Overo Ovim Owele Owelle Owo Ozala Ozalla AEILMNOU