| MUMA WHANAU SERVICES LIMITED | Registered | NZ Limited Company | 6271387 | government contract suppliers |
| MUMMA BEAR ESSENTIALS LIMITED | Removed | NZ Limited Company | 8242692 | councillor interest |
| MUMMA BEARS FOOD AND CATERING LIMITED | Registered | - | - | |
| Mundo Trust | Unknown | - | - | councillor interest |
| MURA CREATIVE LIMITED | Registered | NZ Limited Company | 8641526 | government contract suppliers |
| MURCHISON LIMEWORKS 2006 LIMITED | Registered | NZ Limited Company | 1758477 | councillor interest |
| MURIHIKU LEARNING CONNECTIONS LIMITED | Registered | NZ Limited Company | 8423250 | councillor interest |
| Muriwhenua Incorporation | Unknown | - | - | kanoa recipients |
| MURIWHENUA SPAT COMPANY LIMITED | Registered | NZ Limited Company | 8954409 | kanoa recipients |
| Murphy Buses Limted | Unknown | - | - | government contract suppliers |
| MURPHY HORTICULTURE LIMITED | Registered | NZ Limited Company | 963127 | |
| Murray Gaylor Family Trust | Unknown | - | - | councillor interest |
| MURRAY TURNER DECORATORS LIMITED | Registered | NZ Limited Company | 965182 | government contract suppliers |
| MURRAYS VETERINARY CLINIC LIMITED | Removed | NZ Limited Company | 1283703 | government contract suppliers |
| Murupara Budget Advisory Services Trust | Registered | Charitable Trust | - | government contract suppliers |
| MUSA Environmental | Unknown | - | - | government contract suppliers |
| MUSICAL IMPORT CO LIMITED | Registered | NZ Limited Company | 82697 | |
| Musical Theatre Oamaru; Waitoa Park Golf Club; Otago Southland Theatre Awards (OSTAS) Trust | Unknown | - | - | councillor interest |
| MVM GROUP LIMITED | Registered | NZ Limited Company | 8977143 | government contract suppliers |
| Mw Hori Te Pa Trust | Unknown | - | - | councillor interest |
| MW SMITH DESIGN LIMITED | Registered | NZ Limited Company | 8723828 | government contract suppliers |
| Mwater | Registered | Sole Trader | - | government contract suppliers |
| MWRCH | Registered | NZ Limited Company | - | councillor interest |
| My Accelerated Care Limited (Careway) | Unknown | - | - | government contract suppliers |
| My Christmas Gift drive with NZ Post | Unknown | - | - | corporate donations |
| MY FOOD BAG GROUP LIMITED | Registered | NZ Limited Company | 6113607 | mp interest |
| MY FOOD BAG LIMITED | Registered | NZ Limited Company | 4142618 | mp interest |
| My Kai Tiaki LTD | Registered | NZ Limited Company | - | councillor interest |
| My Kai Tiaki LTD, My Kai LTD | Unknown | - | - | councillor interest |
| My Kai Tiaki Media LITD | Unknown | - | - | councillor interest |
| MY PET KAI LIMITED | Registered | NZ Limited Company | 7788116 | councillor interest |
| MY PLACE AOTEAROA LIMITED | Registered | NZ Limited Company | 6276379 | government contract suppliers |
| MY PLUMBING DEPOT FEILDING (2023) LIMITED | Registered | NZ Limited Company | 8838511 | councillor interest |
| My Ride Dunedin | Unknown | - | - | government contract suppliers |
| MYLAUNCHPAD LIMITED | Registered | NZ Limited Company | 8746871 | government contract suppliers |
| MYSTOX LIMITED | Registered | NZ Limited Company | 3746774 | councillor interest |
| MYSTOXAROUSINTOVEGAS LIMITED | Registered | NZ Limited Company | 3344932 | councillor interest |
| MYXRAYDOSE LIMITED | Registered | NZ Limited Company | 5102761 | government contract suppliers |
| N & L EDLIN TRUSTEE LIMITED | Registered | NZ Limited Company | 7971656 | councillor interest |
| N & T Morison Family Trust | Unknown | - | - | councillor interest |
| N COLE LIMITED | Removed | NZ Limited Company | 43050 | government contract suppliers |
| NAAHC | Unknown | - | - | iwi subsidiaries |
| Naam Foundation | Unknown | - | - | corporate donations |
| NAB LIMITED | Removed | NZ Limited Company | 6322491 | councillor interest |
| NADA PEAKS TRUSTEES LIMITED | Registered | NZ Limited Company | 4986060 | mp interest |
| NADAVIAN HOLDINGS LIMITED | Registered | NZ Limited Company | 3554469 | councillor interest |
| NAHC | Unknown | - | - | iwi subsidiaries |
| NAIA LIMITED | Registered | NZ Limited Company | 5848091 | government contract suppliers |
| Naiad Inflatables (NZ) Ltd | Removed | NZ Limited Company | - | government contract suppliers |
| NAIAD NEW ZEALAND LIMITED | Registered | NZ Limited Company | 7869039 | government contract suppliers |
