| Maniapoto Māori Trust Board | Unknown | - | - | mp interest |
| Maniapoto Treaty Settlement Claim Trust | Unknown | - | - | mp interest |
| Manihera Contracting Limited | Unknown | - | - | government contract suppliers |
| MANIOTOTO DAIRY 2012 LIMITED | Registered | NZ Limited Company | 3847678 | councillor interest |
| Maniototo Lions Club | Unknown | - | - | councillor interest |
| Manji Family Trust | Unknown | - | - | councillor interest |
| MANN & ASSOCIATES LIMITED | Registered | NZ Limited Company | 3716097 | government contract suppliers |
| Mansell Associates | Registered | - | - | |
| MANSONS TCLM LIMITED | Registered | NZ Limited Company | 1851464 | political donors |
| MANU WHENUA TRUST LIMITED | Registered | NZ Limited Company | 9382997 | councillor interest |
| MANUHERIKIA RIVER LIMITED | Registered | NZ Limited Company | 6345113 | councillor interest |
| MANUKA FARMING NZ LIMITED | Registered | NZ Limited Company | 5863249 | councillor interest |
| Manuka Honey Appellation Society | Registered | Incorporated Society | - | kanoa recipients |
| MANUKA PLANTATION NEW ZEALAND LIMITED | Registered | NZ Limited Company | 6000370 | councillor interest |
| Manuka Reserch Partnership (NZ) Limited | Unknown | - | - | councillor interest |
| MANUKA STREET CHARITABLE TRUST LIMITED | Registered | NZ Limited Company | 4443196 | councillor interest |
| MANUKA TRUSTEE 2020 LIMITED | Registered | NZ Limited Company | 7963938 | councillor interest |
| MANUKAU CITY MEDICAL CENTRE LIMITED | Registered | NZ Limited Company | 1159517 | government contract suppliers |
| Manukorihi Pā Reserve Trust | Unknown | - | - | kanoa recipients |
| Manurewa Marae | Unknown | - | - | government contract suppliers |
| MANUREWA MARAE TRUST BOARD 2008 INCORPORATED | Registered | Incorporated Society | - | government contract suppliers |
| MANUTAHI CONSTRUCTION LIMITED | Registered | NZ Limited Company | 8325066 | government contract suppliers |
| Maori Ahu Whenua Trust | Unknown | - | - | councillor interest |
| MAORI AND PASIFIKA SUPPORT SERVICES LIMITED | In Liquidation | NZ Limited Company | 5842903 | government contract suppliers |
| Māori and Pasifika Trades Training (MPTT) Consortia | Unknown | - | - | corporate donations |
| Māori Child Health Research Collaborative | Unknown | - | - | corporate donations |
| Māori health initiatives | Unknown | - | - | corporate donations |
| Māori Investments LTD | Registered | NZ Limited Company | - | councillor interest |
| Maoriland Charitable Trust | Registered | Charitable Trust | - | kanoa recipients |
| MAP PROJECTS LIMITED | Registered | NZ Limited Company | 1132865 | government contract suppliers |
| Maple Lane Trust | Unknown | - | - | councillor interest |
| Mapu Maia | Unknown | - | - | government contract suppliers |
| Māpua Boat Club | Registered | Incorporated Society | - | councillor interest |
| Māpua Boat Ramp Community Trust | Registered | Charitable Trust | - | councillor interest |
| MAPUA LANDSCAPES LIMITED | Registered | NZ Limited Company | 5872813 | government contract suppliers |
| MAPUA VENTURES LIMITED | Registered | NZ Limited Company | 3998698 | government contract suppliers |
| Māpua Waterfront Area Masterplan Working Group | Unknown | - | - | councillor interest |
| Marae Trustee Te Runanga O Ngati Ruanui Trust (beneficiary) | Unknown | - | - | mp interest |
| MARAE TRUSTEES 2019 LIMITED | Removed | NZ Limited Company | 7323737 | mp interest |
| Maraeakakaho Country Cricket Club | Unknown | - | - | councillor interest |
| Maraekakaho Country Cricket Club | Unknown | - | - | councillor interest |
| MARAENUI GOLF CLUB INCORPORATED | Registered | - | - | |
| MARAHAU MARINE LIMITED | Registered | NZ Limited Company | 5969828 | government contract suppliers |
| MARAHAU MARINE SERVICES LIMITED | Registered | NZ Limited Company | 5939783 | government contract suppliers |
| Marahau Sandy Bay Ratepayers and Residents Association | Registered | Incorporated Society | - | councillor interest |
| MARAKA CONSULTANCY LIMITED | Registered | NZ Limited Company | 7278896 | councillor interest |
| MARAMA FOX CONSULTANCY GROUP TAPUI LIMITED | Removed | NZ Limited Company | 6513852 | |
| Marand Precision Engineering Pty Ltd | Unknown | - | - | government contract suppliers |
| MARANDA HOLDINGS LIMITED | Registered | NZ Limited Company | 1902677 | councillor interest |
| MARATHON CONSTRUCTION LIMITED | Registered | NZ Limited Company | 6662053 | government contract suppliers |
