Optimism
- Level 1, 1 Kingdon Street, Newmarket, Auckland
Oranga School
- 21 Rangipawa Road, One Tree Hill, Auckland
Orange Productions – Exceptional Events Management & Design
- 6 Henderson Place Onehunga
ORB Communications Ltd
- Level 1, 214 Karangahape Road, Auckland
Orcon Internet Limited
- 28 The Warehouse Way, Northcote, North Shore
White Cliffs Brewing Co
- 487 Main North Road, RD 44, Urenui, Taranaki