OM Financial Ltd
- Level 2, 187 Broadway, Newmarket, Auckland
Omnicron Productions Ltd
- Top Floor, 10 Galatos Street, Newton, Auckland
Omokoroa School
- Plummers Point, Tauranga
OneDirect
- Airport Business Park, 14 McLeans Island Road, Christchurch
Onehunga Primary School
- 122 Arthur Street, Onehunga, Auckland
Onduline Building Products
- 8C Marphona Cresent, Takanini,