| Hangdog Campground | Unknown | - | - | councillor interest |
| HANHAM & PHILP CONTRACTORS LIMITED | Registered | NZ Limited Company | 139851 | government contract suppliers |
| Hanlon Plumbing & Pipe Services Ltd. | Unknown | - | - | government contract suppliers |
| Hanmer Solutions | Unknown | - | - | government contract suppliers |
| HANMER SPRINGS COMMUNITY TRUST | Registered | Charitable Trust | - | government contract suppliers |
| Hanmer Springs Forest Camp | Registered | Charitable Trust | - | councillor interest |
| Hanmer Springs Thermal Pools and Spa Management Committee | Unknown | - | - | councillor interest |
| HANMORE LAND MANAGEMENT LIMITED | Registered | NZ Limited Company | 8152802 | government contract suppliers |
| HANN CONSTRUCTION COMPANY LIMITED | Registered | NZ Limited Company | 1920959 | government contract suppliers |
| HANSON HEATING LIMITED | Registered | NZ Limited Company | 862245 | government contract suppliers |
| HĀPAI COMMERCIAL PROPERTY GENERAL PARTNER LIMITED | Registered | NZ Limited Company | 7187653 | iwi subsidiaries |
| HĀPAI DEVELOPMENT PROPERTY GENERAL PARTNER LIMITED | Registered | NZ Limited Company | 8195264 | iwi subsidiaries |
| HĀPAI HOUSING GENERAL PARTNER LIMITED | Registered | - | 8139226 | iwi subsidiaries |
| Hāpai Housing Limited Partnership | Registered | Limited Partnership (NZ) | - | iwi subsidiaries |
| HĀPAI HOUSING PIE LIMITED | Registered | NZ Limited Company | 9251935 | iwi subsidiaries |
| HAPAI TE HAUORA TAPUI (LIMITED) | Registered | NZ Limited Company | 838098 | government contract suppliers |
| Hapai Te Hauora Tapui with Turehou Maori wardens & Community Action Against Alcohol Harm Auckland | Unknown | - | - | government contract suppliers |
| Hapai Tuhono | Registered | Charitable Trust | - | government contract suppliers |
| Hapeta Family Trust | Unknown | - | - | councillor interest |
| Happy Kids Parrs Park Early Learning Centre | Registered | NZ Limited Company | - | government contract suppliers |
| HARBORNE CONSTRUCTION LIMITED | Registered | NZ Limited Company | 2517070 | government contract suppliers |
| HARBOUR ASSET MANAGEMENT LIMITED | Registered | NZ Limited Company | 1791730 | fund managers |
| HARBOUR BASKETBALL ASSOCIATION INCORPORATED | Registered | - | - | |
| HARBOUR CRUISES WELLINGTON LIMITED | Removed | NZ Limited Company | 20165 | |
| HARBOUR FISH LIMITED | Registered | NZ Limited Company | 1296240 | councillor interest |
| Harbour Hockey Charitable Trust | Registered | Charitable Trust | - | mp interest |
| HARBOUR SPORT TRUST | Registered | Charitable Trust | - | government contract suppliers |
| HARBOUR WIND LIMITED | Removed | NZ Limited Company | 2193407 | councillor interest |
| Harcourts Cooper and Co | Unknown | - | - | political donors |
| HARDING CLAYTON & ASSOCIATES LIMITED | Removed | NZ Limited Company | 34938 | government contract suppliers |
| Harding Construction Ltd | Unknown | - | - | government contract suppliers |
| HARDING CONSULTANCY LIMITED | Registered | NZ Limited Company | 7563336 | councillor interest |
| HARDING TRAFFIC LIMITED | Registered | NZ Limited Company | 1173931 | government contract suppliers |
| HARDISTY ENGINEERING LIMITED | Registered | NZ Limited Company | 17201 | government contract suppliers |
| HARDMARSH LIMITED | Registered | NZ Limited Company | 6273572 | government contract suppliers |
| Hardmarsh Limited T/A Maxwells Drycleaning | Unknown | - | - | government contract suppliers |
| Hardsweat Trust | Unknown | - | - | councillor interest |
| HARDWOOD TECHNOLOGY LIMITED | Registered | NZ Limited Company | 639235 | government contract suppliers |
| HARDY GROUP TRUST LIMITED | Registered | NZ Limited Company | 7795970 | government contract suppliers |
| HARDYGROUP NZ LIMITED | Registered | NZ Limited Company | 8187730 | government contract suppliers |
| HAREWOOD HOLDINGS (2016) LIMITED | Registered | NZ Limited Company | 6199227 | councillor interest |
| HAREWOOD HOLDINGS LIMITED | Removed | NZ Limited Company | 959671 | councillor interest |
| HARGOOD BUILDERS LIMITED | Registered | NZ Limited Company | 5716169 | government contract suppliers |
| Hari and Nandiita Giri Family Trust | Unknown | - | - | councillor interest |
| HARLEM-CRUZ LIMITED | Registered | NZ Limited Company | 8137594 | government contract suppliers |
| HARMER EARTHMOVING LIMITED | Registered | NZ Limited Company | 2136409 | government contract suppliers |
| HARMO INVESTMENTS LIMITED | Registered | NZ Limited Company | 5292501 | iwi subsidiaries |
| HARMONIC ANALYTICS LIMITED | Registered | NZ Limited Company | 1612753 | government contract suppliers |
| HARRIS BUTT ARCHITECTURE LIMITED | Registered | NZ Limited Company | 1962547 | government contract suppliers |
| HARRIS DOWD GIBBONS CONSTRUCTION LIMITED | Registered | NZ Limited Company | 1987352 | government contract suppliers |
