Omakau Commercial Hotel
- 1 Harvey Street, Omakau
Ohaupo School
- Great South Road, R D 1, Ohaupo
Office of the Ombudsmen
- Level 10, Forsyth Barr Tower, 55-65 Shortland Street, Auckland
The Oaks Senior Care Centre
- 88 Main South Rd, Christchurch
Oikoumene Forest Ltd
- 197 Wishart Road, RD 2, Helensville, Auckland
PHR Processing Ltd
- 4 Seafair Close, Cloudy Bay Business Park, Blenheim