| Career Moves Trust | Registered | Charitable Trust | - | government contract suppliers |
| CAREER PATHWAYS NZ LIMITED | Registered | NZ Limited Company | 7288356 | government contract suppliers |
| CAREER SAVVY LIMITED | Removed | NZ Limited Company | 5735087 | government contract suppliers |
| CAREER SUPPORT LIMITED | Registered | NZ Limited Company | 8099519 | government contract suppliers |
| Career Wave NZ Ltd. | Unknown | - | - | government contract suppliers |
| CareerHub Pty Ltd | Unknown | - | - | government contract suppliers |
| CareFusion New Zealand 313 Limited | Unknown | - | - | government contract suppliers |
| CAREY'S BAY MARINE SERVICES LIMITED | Registered | NZ Limited Company | 6093927 | government contract suppliers |
| CARINA LIMITED | Registered | NZ Limited Company | 7720377 | government contract suppliers |
| Carital Capital Partners Limited | Unknown | - | - | political donors |
| Caritel Capital Partners Limited | Unknown | - | - | political donors |
| CARITIM LIMITED | Registered | - | - | |
| CARL ZEISS (N.Z.) LIMITED | Registered | NZ Limited Company | 1924 | government contract suppliers |
| Carl Zeiss (NZ) Ltd | Unknown | - | - | government contract suppliers |
| Carl Zeiss Australia | Unknown | - | - | government contract suppliers |
| CARLING ARCHITECTS LIMITED | Removed | NZ Limited Company | 693348 | government contract suppliers |
| CARMODY CONSTRUCTION LIMITED | Registered | NZ Limited Company | 5235461 | government contract suppliers |
| Carntey Construction Ltd T/A Smith & Sons Ashburton | Unknown | - | - | government contract suppliers |
| CARNZ Driver Training LTD | Unknown | - | - | government contract suppliers |
| Carpe Diem Trading Trust | Unknown | - | - | councillor interest |
| CARPE DIEM TRUSTEE LIMITED | Registered | NZ Limited Company | 8313380 | councillor interest |
| CARPENTRY SOUTH 2024 LIMITED | Registered | NZ Limited Company | 9139012 | government contract suppliers |
| CARPENTRY SOUTH LIMITED | Removed | NZ Limited Company | 1288931 | government contract suppliers |
| CARPETS ON COBHAM LIMITED | Registered | NZ Limited Company | 1853927 | government contract suppliers |
| CARRARA HOLDINGS LIMITED | Registered | NZ Limited Company | 608369 | government contract suppliers |
| CARRFIELDS IRRIGATION LIMITED | Registered | NZ Limited Company | 5479071 | government contract suppliers |
| CARRFIELDS LIVESTOCK LIMITED | Registered | NZ Limited Company | 1222113 | government contract suppliers |
| Carrington Investment Trust | Unknown | - | - | mp interest |
| Carringtono Bowling & Croquet Club | Unknown | - | - | councillor interest |
| CARROLL CONSTRUCTION LIMITED | Registered | NZ Limited Company | 2238355 | government contract suppliers |
| Carson Associates NZ | Unknown | - | - | councillor interest |
| CARSON TAYLOR COMPANY LIMITED | Registered | NZ Limited Company | 282368 | councillor interest |
| CARSON TAYLOR MOTOR CO LIMITED | Removed | NZ Limited Company | 6611114 | councillor interest |
| CARTER ELECTRICAL LIMITED | Registered | NZ Limited Company | 71796 | government contract suppliers |
| Carter Society | Registered | Incorporated Society | - | councillor interest |
| CARTERS BUILDING SUPPLIES LIMITED | Registered | - | - | |
| Carterton Christmas Parade | Unknown | - | - | councillor interest |
| Carterton District Historica Society | Unknown | - | - | councillor interest |
| Carterton Lions Club | Unknown | - | - | councillor interest |
| Carterton Rotary | Registered | Incorporated Society | - | councillor interest |
| Carterton School Board of Trustees | Unknown | - | - | councillor interest |
| Cartney Construction Ltd T/A Smith & Sons Ashburton | Unknown | - | - | government contract suppliers |
| CARTRACK NEW ZEALAND LIMITED | Registered | NZ Limited Company | 5845652 | government contract suppliers |
| CARTWRIGHT CATERING GROUP LIMITED | Registered | NZ Limited Company | 6294927 | councillor interest |
| CARTWRIGHT FAMILY TRUSTEE COMPANY LIMITED | Registered | NZ Limited Company | 9347750 | councillor interest |
| CARUS GROUP LIMITED | Registered | NZ Limited Company | 5018840 | government contract suppliers |
| CAS A division of the American Chemical Society | Unknown | - | - | government contract suppliers |
| Casebrook Intermediate School | Unknown | - | - | councillor interest |
| CASHEL PROPERTY INVESTMENT LIMITED | Registered | NZ Limited Company | 8050898 | mp interest |
| Cashin Scholarship | Unknown | - | - | corporate donations |
