Omaha Bay Vineyard
- 189 Takatu Rd, Matakana
The Optimum Clothing Co. Ltd
- 14 Westech Place, Kelston, Auckland
On the Beach Backpackers Lodge (YHA Whitianga)
- 46 Buffalo Beach Road, Whitianga, Coromandel
Opzeeland Transport (Hornby) Ltd – Christchurch Branch
- 12 Mount View Place, Hornby, Christchurch
On The Point Lake Rotorua
- 214 Kawaha Point Road, Rotorua
Oranga School
- 21 Rangipawa Road, One Tree Hill, Auckland
Onyx Group Ltd
- 17 The Concourse, Henderson, Auckland
Orange Productions – Exceptional Events Management & Design
- 6 Henderson Place Onehunga
Open Cloud Ltd
- Level 4, 54-56 Cambridge Terrace, Wellington
ORB Communications Ltd
- Level 1, 214 Karangahape Road, Auckland