Regions of New Zealand
- Otakiri Station
- Otakiri
- Otaki Beach
- Otaki
- Otaki
- Otakeho Stream
- Otakeho
- Otakeao Creek
- Otakau Creek
- Otakarara Stream
- Otaitai
- Otaio River
- Otaio Homestead
- Otaio
- Otaika Stream
- Otaihape Stream
- Otaihanga
- Otaihanga
- Otahuti
- Otahu Stream
- Otahuhu
- Otahu
- Otahoua
- Otahome Stream
- Otahi Stream
- Otago Statistical Area
- Otago Retreat
- Otago Point
- Otago Peninsula
- Otago Harbour
- Otago
- Otago
- Otaenga
- Oswald Stream
- Mount Ostler
- Ossify Creek
- Ossa Stream
- Mount Ossa
- Ossa
- Orwell Creek
- Oruru River
- Oruru
- Oruru
- Orupe Stream
- Oruawharo River
- Oruawharo Heads
- Oruawharo
- Blumine Island
- Oruatua Stream
- Oruapuroto Stream
- Oruanui
- Oruaiwi
- Oruaiti River
- Oruahurangi
- Orton
- Orrs Creek
- Orrin Creek
- Orr Hill
- Mount Orr
- Orowhana
- Orowaiti River
- Oroua River
- Oroua Downs
- Oroua County
- Orotere
- Oropi
- Oronowhainu
- Oronoko Range
- Orongorongo River
- Orongorongo
- Orongo Point
- Orongo
- Orongatea
- Oroko Creek
- Oroi Stream
- Oroi
- Ormondville
- Ormonds
- Ormond
- Oriwa
- Orira River
- Orinoco Creek
- Orini River
- Orini
- Orikaka River
- Oriental Bay
- Orewa River
- Orewa
- Oreti Plains
- Orete Point
- Orere Point
- Orepuki
- Ore Creek
- Orchard Spur
- Orchard Creek
- Orchard Bay
- Orbells Creek
- Orawia Bridge
- Orawia
- Orautoha Stream
- Oraukura Gorge
- Oraukura
- Orauea River
- Oratia Station
- Oratia
- Orari River
- Orari
- Oraora Stream
- Oranoa
- Orangiwhao
- Orangitu
- Orangitoea
- Orangipuku River
- Orangimea
- Orangikino
- Orangikahu
- Orangi
- Orange Range
- Orangapai
- Orakei
- Orakei
- Oraka Stream
- Oraka Point
- Orakanui Stream
- Opureke
- Opura
- Opura
- Opunake
- Opunake
- Opuku Cliff
- Opuha River
- Opuawhanga
- Opuatia Stream
- Opuatia
- Opuahau
- Opua
- Opoutere
- Opouteke River
- Opoutama Stream
- Opoutama
- Opouri Stream
- Opouri River
- Opouri Peak
- Opouri Lake
- Opouawe River
- Opotiki Harbour
- Opotiki County
- Opotiki
- Opotiki District
- Opotia
- Oporou
- Oporae Stream
- Oporae
- Oporae
- Opononi
- Oponae Stream
- Oponae
- Opokorau Stream
- Opoko
- Opitonui River
- Opio Stream
- Opio
- Opihi River
- Opihi Bay
- Ophir
- Opete Creek
- Opepe
- Open Creek
- Open Cove
- Open Bay Islands
- Open Bay
- Opawe Stream
- Opawa River
- Opawa River
- Opau Stream
- Opaunuku Stream
- Oparia
- Opare
- Oparau River
- Oparau
- Oparara River
- Oparara
- Opapa
- Opani Stream
- Opani Point
- Opani-aputa Point
- Opango
- Opaki
- Opaki
- Opahi Station
- Opaheke
- Oonah Saddle
- Oonah Burn
- Onslow Glacier
- Mount Onslow
- Lake Onslow
- Onoke Lake
- Only Islands
- Oniao
- Ongo Stream