O
- (Oturkpo) Ojantele
- (Obi) Okpaga
- (Oturkpo) Omebe
- (Oturkpo) Oko
- (Gwer East) Okukukwu
- (Oturkpo) Ogomo
- (Oturkpo) Obelogba
- (Oturkpo) Oturkpo
- (Gwer East) Ogbum
- (Oturkpo) Okpaobeka
- (Gwer East) Odugh
- (Oturkpo) Otada
- (Gwer East) Ortserga
- (Gwer East) Ochu
- (Gwer East) Orya
- (Gwer East) Orsunde
- (Gboko) Orhugh
- (Oturkpo) Ojala
- (Gwer West) Ogbadu
- (Gwer West) Oga
- (Gwer West) Obiam
- (Oturkpo) Okpaha
- (Gwer West) Orga
- (Markurdi) Orwuatsaga
- (Apa) Okpaha
- (Markurdi) Orchiga
- (Gwer West) Ochio
- (Gwer West) Orwa
- (Agatu) Ogbenyi
- (Ado) Opalu