O
- (Far North District) Oherengi
- (Far North District) Omahuta
- (Kaipara District) Oranoa
- (Far North District) Okahu
- (Far North District) Otaha
- (Far North District) Otoroa
- (Far North District) Orotere
- (Far North District) Omaunu
- (Far North District) Omapere
- (Far North District) Orawau
- (Far North District) Oruaiti
- (Far North District) Otangaroa
- (Far North District) Oruru
- (Far North District) Oturu
- (Whangarei) Oakleigh
- (Kaipara District) Omana
- (Far North District) Omanaia
- (Kaipara District) Onetea
- (Far North District) Opononi
- (Whangarei) Opuawhanga
- (Far North District) Otiria
- (Whangarei) Otonga
- (Whangarei) Otuhi
- (Far North District) Oue
- (Far North District) Okaihau
- (Far North District) Ohaeawai
- (Far North District) Opua
- (Whangarei) Onerahi