Opra Consulting Group Queens Arcade
- Level 3, Suite 302, Queens Arcade, 34-40 Queen Street, Auckland
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
OM Financial Ltd
- Level 2, 187 Broadway, Newmarket, Auckland
Oranga School
- 21 Rangipawa Road, One Tree Hill, Auckland
Omnicron Productions Ltd
- Top Floor, 10 Galatos Street, Newton, Auckland
Orange Productions – Exceptional Events Management & Design
- 6 Henderson Place Onehunga
Onduline Building Products
- 8C Marphona Cresent, Takanini,