| Clover Pipelines Pty Ltd | Unknown | - | - | government contract suppliers |
| CLOVERDENE DAIRY LIMITED | Registered | NZ Limited Company | 1757849 | councillor interest |
| Club Carterton | Registered | Incorporated Society | - | councillor interest |
| CLUB VISTA LIMITED | Registered | NZ Limited Company | 5786527 | councillor interest |
| CLUTCH CONSULTING LIMITED | Registered | NZ Limited Company | 9224740 | councillor interest |
| CLUTHA COMMUNITY HEALTH COMPANY LIMITED | Registered | NZ Limited Company | 887714 | government contract suppliers |
| Clutha Community Hub Charitable Trust | Registered | Charitable Trust | - | kanoa recipients |
| CLUTHA DEVELOPMENT INCORPORATED | Registered | Incorporated Society | - | government contract suppliers |
| Clutha Gold Cycle Trail Trust | Unknown | - | - | mp interest |
| Clutha Gold Trail Trust | Registered | Charitable Trust | - | mp interest |
| Clyne Grigg and Associates Limited | Unknown | - | - | government contract suppliers |
| CM Prendergast Family Trust | Unknown | - | - | councillor interest |
| CM-NEW ZEALAND LIMITED | Registered | NZ Limited Company | 7069464 | government contract suppliers |
| CML LIMITED | Removed | NZ Limited Company | 1721502 | government contract suppliers |
| CMP CONSTRUCTION NZ LIMITED | Registered | NZ Limited Company | 5504581 | government contract suppliers |
| CMP INTERIORS LIMITED | Registered | NZ Limited Company | 5504526 | government contract suppliers |
| CMT GROUP LIMITED | Removed | NZ Limited Company | 6200440 | government contract suppliers |
| CMT SPECIALISTS LIMITED | Registered | NZ Limited Company | 5122861 | government contract suppliers |
| CMW (NZ) LIMITED | Registered | NZ Limited Company | 4949519 | government contract suppliers |
| CMW GEOTECHNICAL NZ LIMITED | Registered | NZ Limited Company | 8484027 | government contract suppliers |
| CNI IWI HOLDINGS LIMITED | Registered | - | 2143200 | iwi subsidiaries |
| CNS 2000 LTD T/A RELAX LOUNGE | Unknown | - | - | government contract suppliers |
| CNSST Foundation | Registered | Charitable Trust | - | government contract suppliers |
| CO-LIVING COLLECTIVE LIMITED | Registered | NZ Limited Company | 8292110 | government contract suppliers |
| CO-STUDIO, STEPHENSON & TURNER LIMITED | Registered | NZ Limited Company | 8303321 | government contract suppliers |
| Coactive Education T/AThe Speaking Company | Unknown | - | - | government contract suppliers |
| Coast Access Radio | Registered | Charitable Trust | - | councillor interest |
| COAST AND COUNTRY PEST CONTROL LIMITED | Registered | NZ Limited Company | 8012899 | government contract suppliers |
| COAST CIVIL LIMITED | Removed | NZ Limited Company | 6110127 | government contract suppliers |
| Coastal - Burwood Neighbourhood Watch | Unknown | - | - | councillor interest |
| COASTAL DIGGER SERVICES LIMITED | Registered | NZ Limited Company | 1929602 | government contract suppliers |
| COASTAL DIGS LIMITED | Registered | NZ Limited Company | 9324248 | councillor interest |
| Coastal Hazards Working Group | Unknown | - | - | councillor interest |
| COASTAL LAMB LIMITED | Registered | - | - | |
| COASTAL LAMB TRADING LIMITED | Registered | - | - | |
| Coastal Rural Drainage Advisory Group | Unknown | - | - | councillor interest |
| Coastal Rural Drainage Group | Unknown | - | - | councillor interest |
| COASTAL SOLAR LIMITED | Registered | NZ Limited Company | 7365736 | government contract suppliers |
| Coastal Spirit Football Club | Registered | Incorporated Society | - | councillor interest |
| Coastal-Burwood Community Watch | Unknown | - | - | councillor interest |
| Coastguard North Canterbury | Registered | Incorporated Society | - | councillor interest |
| COASTLANDS SHOPPINGTOWN LIMITED | Registered | NZ Limited Company | 22055 | councillor interest |
| COASTLINE MARKERS LIMITED | Registered | NZ Limited Company | 1519404 | government contract suppliers |
| Coastline Vapes | Registered | NZ Limited Company | - | government contract suppliers |
| COATBRIDGE LIMITED | Registered | NZ Limited Company | 2105736 | councillor interest |
| Coatbridge Trust | Unknown | - | - | councillor interest |
| COATS GROUP PLC | Removed | - | - | |
| COBBLESTONE TRUST LIMITED | Registered | NZ Limited Company | 9164760 | councillor interest |
| COCA-COLA EUROPACIFIC PARTNERS NEW ZEALAND LIMITED | Registered | NZ Limited Company | 46860 | government contract suppliers |
| COCURULLO INVESTMENTS LIMITED | Registered | NZ Limited Company | 1434701 | councillor interest |
