- http://www.onehungaprimary.school.nz
- 09 636 6256
- 122 Arthur Street, Onehunga, Auckland
- http://www.optimism.co.nz/
- 09 520 5820
- Level 1, 1 Kingdon Street, Newmarket, Auckland
- http://www.onepoto.school.nz
- 09 480 7469
- 17 Fraser Avenue, Northcote, Auckland
- http://www.orourkebros.co.nz
- 03 614 7737
- 85 Main Road, Pleasant Point, Timaru
- http://www.orionhealth.com
- 09 638 0600
- Orion House, 181 Grafton Road, Grafton, Auckland 1010
- http://www.orlandoflowers.co.nz
- 09 377 2804
- Ground Floor, George Courts Building, 238 Karangahape Road, Auckland