| Canterbury Men's Centre | Registered | Charitable Trust | - | government contract suppliers |
| Canterbury Museum Trust | Unknown | - | - | councillor interest |
| Canterbury Museum Trust Board | Registered | Other Public Entity | - | councillor interest |
| Canterbury Museum Trust Board Standing Committee | Unknown | - | - | councillor interest |
| Canterbury Mustang Owners Club | Registered | Incorporated Society | - | councillor interest |
| Canterbury Neighbourhood Support Inc | Unknown | - | - | councillor interest |
| Canterbury Regional Council | Registered | Local Government | - | councillor interest |
| CANTERBURY SEISMIC INSTRUMENTS LIMITED | Registered | NZ Limited Company | 1305703 | government contract suppliers |
| CANTERBURY SPORTS FOUNDATION INCORPORATED | Registered | - | - | |
| CANTERBURY VEGETATION CONTROL LIMITED | Removed | NZ Limited Company | 1056360 | councillor interest |
| CANTERBURY WEST COAST SPORTS TRUST | Registered | Charitable Trust | - | government contract suppliers |
| Canterbury Women's Club | Registered | Incorporated Society | - | councillor interest |
| CANTERBURY WOODCHIP SUPPLIES LIMITED | Registered | NZ Limited Company | 3656752 | government contract suppliers |
| CANTERBURYS CHOICE LIMITED | Registered | NZ Limited Company | 7605237 | government contract suppliers |
| CANTON HOLDINGS LIMITED | Registered | NZ Limited Company | 1834102 | councillor interest |
| CANTWELL TRUSTEES 2021 LIMITED | Registered | NZ Limited Company | 8225609 | councillor interest |
| CANVART LIMITED | Registered | NZ Limited Company | 1718468 | councillor interest |
| CAP TRUSTEE 2021 LIMITED | Registered | NZ Limited Company | 8157213 | councillor interest |
| CAPABILITY GROUP LIMITED | Registered | NZ Limited Company | 1558876 | government contract suppliers |
| Cape Coasts Community Group | Unknown | - | - | councillor interest |
| CAPE CONTRACTING LIMITED | Registered | NZ Limited Company | 836649 | government contract suppliers |
| CAPE LIMITED | Removed | NZ Limited Company | 1410679 | government contract suppliers |
| Cape Sanctuary | Unknown | - | - | corporate donations |
| Capes Medical Supplies Limited | Removed | NZ Limited Company | - | government contract suppliers |
| CAPGEMINI NEW ZEALAND LIMITED | Registered | NZ Limited Company | 1128855 | government contract suppliers |
| CAPIRE LIMITED | Removed | NZ Limited Company | 2488496 | government contract suppliers |
| Capital and Coast District Health Board | Registered | Central Government | - | government contract suppliers |
| Capital Endosopy Partnership Limited | Unknown | - | - | government contract suppliers |
| CAPITAL GR LTD. | Unknown | - | - | political donors |
| CAPITAL SCAFFOLDING LIMITED | Registered | NZ Limited Company | 6276929 | government contract suppliers |
| Capital Theatre Trust | Registered | Charitable Trust | - | mp interest |
| CAPITAL TRAINING LIMITED | Removed | NZ Limited Company | 670568 | government contract suppliers |
| CAPS Hauraki Incorporated | Registered | Incorporated Society | - | government contract suppliers |
| CAPS NORTHLAND INCORPORATED | Registered | Incorporated Society | - | government contract suppliers |
| CAPTURE SYSTEMS LIMITED | Registered | NZ Limited Company | 6882633 | government contract suppliers |
| CAR HQ (2019) LIMITED | Registered | NZ Limited Company | 7386218 | councillor interest |
| CARAVEL DEVELOPMENTS LIMITED | Removed | NZ Limited Company | 858051 | government contract suppliers |
| Carbon Click Ltd | Unknown | - | - | councillor interest |
| CARBON SOUTH LIMITED | Registered | NZ Limited Company | 2139136 | government contract suppliers |
| CarbonLab Group New Zealand Limited | Unknown | - | - | government contract suppliers |
| CARBONSCAPE LIMITED | Registered | NZ Limited Company | 3953398 | councillor interest |
| CARDNO (NZ) LIMITED | Removed | NZ Limited Company | 36749 | government contract suppliers |
| Cardno Christchurch NZ Ltd | Unknown | - | - | government contract suppliers |
| Cardrona and Treble Cone | Unknown | - | - | kanoa recipients |
| CARE NZ (EST 1954) LIMITED | Registered | NZ Limited Company | 1003540 | government contract suppliers |
| Care NZ Manaaki Aotearoa Ltd | Unknown | - | - | government contract suppliers |
| CARE ON CALL (NZ) LIMITED | Registered | NZ Limited Company | 2200587 | government contract suppliers |
| CARE PARK NEW ZEALAND LIMITED | Registered | NZ Limited Company | 1192998 | government contract suppliers |
| CARE Waitakere Trust | Registered | Charitable Trust | - | government contract suppliers |
| CAREER CONSULTING LIMITED | Registered | NZ Limited Company | 1846355 | government contract suppliers |
