| OTAIKA MC LIMITED | Registered | NZ Limited Company | 2098748 | councillor interest |
| OTAKI AIRSTRIP LIMITED | Registered | NZ Limited Company | 1805679 | councillor interest |
| Ōtaki Canoe Club | Registered | Incorporated Society | - | councillor interest |
| Ōtaki Food Bank | Unknown | - | - | councillor interest |
| Ōtaki Foodbank | Unknown | - | - | councillor interest |
| Ōtaki Foodbank Committee | Unknown | - | - | councillor interest |
| OTAKI GOLF CLUB INCORPORATED | Registered | - | - | |
| OTAKI MAIL LIMITED | Registered | NZ Limited Company | 4625059 | councillor interest |
| OTAKI MAORI RACING CLUB LIMITED | Registered | NZ Limited Company | 8202131 | councillor interest |
| Ōtaki MenzShed | Registered | Incorporated Society | - | councillor interest |
| OTAKI PROMOTIONS GROUP INCORPORATED | Registered | - | - | |
| Ōtaki Sports Club | Unknown | - | - | councillor interest |
| Otaki Stage Players | Unknown | - | - | councillor interest |
| Ōtaki Surf Club | Registered | Incorporated Society | - | councillor interest |
| Otakou Health Limited t/a Te Kaika | Unknown | - | - | government contract suppliers |
| Otamatea Kauri and Pioneer Museum Board | Registered | Charitable Trust | - | kanoa recipients |
| Otamatea Kauri And Pioneer Museum Board - The Kauri Museum | Unknown | - | - | kanoa recipients |
| Otaraua Hapu Management Committee | Registered | Incorporated Society | - | kanoa recipients |
| OTAUTAHI COMMUNITY HOUSING DEVELOPMENT GP LIMITED | Registered | NZ Limited Company | 6201808 | councillor interest |
| Otautahi Community Housing Trust | Registered | Charitable Trust | - | government contract suppliers |
| Otautahi Housing Trust | Unknown | - | - | councillor interest |
| Otautau Community Swimming Pool | Registered | Incorporated Society | - | councillor interest |
| OTAUTAU CONTRACTORS LIMITED | Registered | NZ Limited Company | 1218404 | government contract suppliers |
| Otautau Senior Citizens | Unknown | - | - | councillor interest |
| Oteatao B3A1 | Unknown | - | - | kanoa recipients |
| Otepoti Dunedin Whanau Refuge | Registered | Charitable Trust | - | government contract suppliers |
| ŌTEPOTI GAMES COMPANY LIMITED | Registered | NZ Limited Company | 7986556 | government contract suppliers |
| OTIS ELEVATOR COMPANY LIMITED | Registered | NZ Limited Company | 103000 | government contract suppliers |
| Otis Elevator Company Lt | Unknown | - | - | government contract suppliers |
| Otium Planning Group Pty Ltd | Unknown | - | - | government contract suppliers |
| OTL GROUP LIMITED | Registered | NZ Limited Company | 185937 | councillor interest |
| OTOROHANGA COLLISION & REPAIRS LIMITED | Registered | - | - | |
| Otorohanga Kiwi House Charitable Trust | Registered | Charitable Trust | - | kanoa recipients |
| Otorohanga Support House Whare Awhina Inc | Registered | Incorporated Society | - | government contract suppliers |
| Ōtorohanga Vintage Machinery Club | Registered | Incorporated Society | - | councillor interest |
| OTS LIMITED | Removed | NZ Limited Company | 973341 | government contract suppliers |
| Otukou Marae Reservation Trust | Unknown | - | - | councillor interest |
| Oturehua Tussock Trust | Unknown | - | - | councillor interest |
| OTUREHUA WATER COMPANY LIMITED | Registered | NZ Limited Company | 1827972 | councillor interest |
| OTUROA PROPERTIES LIMITED | Registered | NZ Limited Company | 177128 | kanoa recipients |
| Our Backyard Trust | Unknown | - | - | corporate donations |
| Our Community Pty Ltd | Unknown | - | - | government contract suppliers |
| Our Kerikeri Community Charitable Trust | Registered | Charitable Trust | - | kanoa recipients |
| OUR SCHOOL LIMITED | Registered | NZ Limited Company | 4450498 | government contract suppliers |
| Our Town Motueka | Registered | Incorporated Society | - | councillor interest |
| OUT OF THE SQUARE CREATIONS LIMITED | Registered | NZ Limited Company | 1788464 | councillor interest |
| OUT OF THE SQUARE INVESTMENTS LIMITED | Registered | NZ Limited Company | 1625031 | councillor interest |
| OUT OF THE SQUARE PHOTOGRAPHY LIMITED | Registered | NZ Limited Company | 1303094 | councillor interest |
| OUTBACK COMMUNICATIONS LIMITED | Registered | NZ Limited Company | 2407645 | government contract suppliers |
| OUTBACK NEW ZEALAND LIMITED | Registered | NZ Limited Company | 841611 | kanoa recipients |
