O
- (Okpe) Okwokolo
- (Okpe) Okuitaire
- (Ethiope East) Okuruvu
- (Ethiope East) Okovwavwa
- (Ethiope East) Okurunoh
- (Ethiope East) Okrufor-Okpara
- (Okpe) Odiete
- (Okpe) Okuighele
- (Uvwie) Oharhe
- (Warri South) Oteghele
- (Uvwie) Okuokoko
- (Uvwie) Okorikpehre
- (Ughelli North) Oghara
- (Okpe) Okorowhe
- (Ughelli North) Oghwrughelli
- (Ethiope East) Okorokura
- (Ughelli North) Omoteka
- (Uvwie) Ohrerhe Waterside
- (Uvwie) Ogbomoro
- (Udu) Okpaka
- (Warri South) Olomogbene
- (Warri South-West) Ogoba
- (Warri South) Osele
- (Warri South) Orugbo
- (Warri South) Olugbo-Odo
- (Warri South) Olugbo-Oke
- (Udu) Ohwase
- (Udu) Ovwian
- (Udu) Ovwian
- (Ughelli South) Oteri