Onehunga Primary School
- 122 Arthur Street, Onehunga, Auckland
Optimism
- Level 1, 1 Kingdon Street, Newmarket, Auckland
Onepoto School
- 17 Fraser Avenue, Northcote, Auckland
O’Rourke Brothers
- 85 Main Road, Pleasant Point, Timaru
Orion Health Ltd
- Orion House, 181 Grafton Road, Grafton, Auckland 1010
Orlando Private Florist
- Ground Floor, George Courts Building, 238 Karangahape Road, Auckland