- http://www.obstetrics.co.nz
- (09) 367 1200
- Ground Floor, Birthcare Building, 20 Titoki Street, Parnell, Auckland
- http://www.ohau.school.nz
- 06 368 7949
- 13 Muhunoa East Road, Ohau, Levin
- http://www.omakauhotel.co.nz
- (03) 447 3715
- 1 Harvey Street, Omakau
- http://www.ohaupo.school.nz
- 07 823 6736
- Great South Road, R D 1, Ohaupo
- http://www.ombudsmen.govt.nz
- (09) 379 6102
- Level 10, Forsyth Barr Tower, 55-65 Shortland Street, Auckland
- http://www.oceanialiving.co.nz
- 03 348 2998
- 88 Main South Rd, Christchurch