Onepoto School
- 17 Fraser Avenue, Northcote, Auckland
On the Beach Backpackers Lodge (YHA Whitianga)
- 46 Buffalo Beach Road, Whitianga, Coromandel
On The Point Lake Rotorua
- 214 Kawaha Point Road, Rotorua
Onyx Group Ltd
- 17 The Concourse, Henderson, Auckland
Open Cloud Ltd
- Level 4, 54-56 Cambridge Terrace, Wellington
Flannery Lodge
- Ophir
Opra Consulting Group Queens Arcade
- Level 3, Suite 302, Queens Arcade, 34-40 Queen Street, Auckland
OPSM Thames
- 500 Pollen Street, Thames
Optik Eyecare Pukekohe
- 20 Hall Street, Pukekohe
Optik Eyecare Newmarket
- 2a Gillies Avenue, Newmarket, Auckland
Optimism
- Level 1, 1 Kingdon Street, Newmarket, Auckland
The Optimum Clothing Co. Ltd
- 14 Westech Place, Kelston, Auckland