| CLASSIQUE LANDSCAPERS LIMITED | Registered | NZ Limited Company | 940899 | government contract suppliers |
| ClassWall Systems | Unknown | - | - | government contract suppliers |
| CLEAN AS A WHISTLE LIMITED | Removed | NZ Limited Company | 506652 | political donors |
| CLEAN GREENZ ORGANICS LIMITED | Registered | - | - | |
| CLEAN PLANET FRANCHISE LIMITED | Registered | NZ Limited Company | 1962764 | government contract suppliers |
| Clean Space Holdings Ltd | Unknown | - | - | councillor interest |
| CLEANLINE DISTRIBUTORS LIMITED | Registered | NZ Limited Company | 1304742 | government contract suppliers |
| CLEANLINE DISTRIBUTORS LIMITED T/A CLEANLINE TASMAN | Unknown | - | - | government contract suppliers |
| CLEANSCAPE LIMITED | Registered | NZ Limited Company | 2437713 | government contract suppliers |
| CLEAR AIR ASBESTOS MANAGEMENT LIMITED | Registered | NZ Limited Company | 6091951 | government contract suppliers |
| CLEAR CONSULTING LIMITED | Registered | NZ Limited Company | 1882047 | government contract suppliers |
| CLEAR EDIT NZ LIMITED | Registered | NZ Limited Company | 4914266 | government contract suppliers |
| Clear Horizon | Unknown | - | - | government contract suppliers |
| CLEAR PROPERTY & PROJECTS LIMITED | In Liquidation | NZ Limited Company | 8125464 | government contract suppliers |
| CLEAR SITE DEMOLITION LIMITED | Registered | NZ Limited Company | 5823370 | government contract suppliers |
| CLEARHEAD LIMITED | Registered | NZ Limited Company | 6886294 | government contract suppliers |
| CLEARPOINT LIMITED | Registered | NZ Limited Company | 1969630 | government contract suppliers |
| CLEARWATER CIVIL LIMITED | Registered | NZ Limited Company | 3718736 | government contract suppliers |
| CLEARWATER CONSTRUCTION LIMITED | Registered | NZ Limited Company | 9132452 | government contract suppliers |
| Clearwater Trust - Advances* | Unknown | - | - | mp interest |
| CLEARWATER TRUSTEE SERVICES LIMITED | Registered | NZ Limited Company | 5454421 | mp interest |
| CLEARY & ASSOCIATES LIMITED | Registered | NZ Limited Company | 1795869 | government contract suppliers |
| CLEAVER FAMILY TRUST LIMITED | Registered | NZ Limited Company | 808426 | councillor interest |
| CLELANDS CONSTRUCTION LIMITED | Registered | NZ Limited Company | 663757 | government contract suppliers |
| CLEMENCE DRILLING CONTRACTORS LIMITED | Registered | NZ Limited Company | 432312 | government contract suppliers |
| Clemenger BBDO Limited | Registered | NZ Limited Company | - | government contract suppliers |
| CLEMENTS CONTRACTORS LIMITED | Registered | NZ Limited Company | 1887121 | government contract suppliers |
| CLENDON PHARMACY LIMITED | Registered | NZ Limited Company | 250876 | government contract suppliers |
| CLEVER BUYING LIMITED | Registered | NZ Limited Company | 5832990 | government contract suppliers |
| CLICKFIX LIMITED | Registered | - | - | |
| Clifton Reserve Society | Registered | Incorporated Society | - | councillor interest |
| Climate 2030 Rapid Review | Unknown | - | - | government contract suppliers |
| Climate Action Joint Committee | Unknown | - | - | councillor interest |
| Climate and Resilient Communities Think Tank | Unknown | - | - | councillor interest |
| Climate Change Action Planning Reference Group | Unknown | - | - | councillor interest |
| Climate Change TaiTokerau | Registered | Charitable Trust | - | councillor interest |
| CLIMATE NAVIGATOR LIMITED | Registered | - | - | |
| CLIMATE SIGMA LIMITED | Registered | NZ Limited Company | 5360321 | government contract suppliers |
| CLIMATECH NZ LIMITED | Registered | NZ Limited Company | 4423900 | government contract suppliers |
| CLINE PAINTING SERVICES LIMITED | Registered | NZ Limited Company | 3370111 | government contract suppliers |
| CLINECT NZ PTY LIMITED | Registered | NZ Limited Company | 5248181 | government contract suppliers |
| CLINICAL ADVISORY SERVICES AOTEAROA LIMITED | Registered | NZ Limited Company | 1597278 | government contract suppliers |
| Clinical and Forensic Psychology | Unknown | - | - | government contract suppliers |
| Clinton Heath CRAW | Registered | - | - | |
| CLL SERVICE AND SOLUTIONS LIMITED | Registered | NZ Limited Company | 5897936 | government contract suppliers |
| CLL SOLUTIONS LIMITED | Registered | NZ Limited Company | 8147559 | government contract suppliers |
| CLOCKWISE LIMITED | Removed | NZ Limited Company | 574347 | government contract suppliers |
| Cloke Family Trust | Unknown | - | - | councillor interest |
| Clontarf Foundation | Unknown | - | - | corporate donations |
| CLOTWORTHY TRUSTEE LIMITED | Registered | NZ Limited Company | 8240052 | councillor interest |