| Ahi Mokopuna Limited Partnership | Registered | Limited Partnership (NZ) | - | iwi subsidiaries |
| AHI-Carrier New Zealand Limited | Unknown | - | - | government contract suppliers |
| AHIKA CONSULTING LIMITED | Registered | NZ Limited Company | 7322736 | government contract suppliers |
| AHIKA LIMITED | Removed | NZ Limited Company | 8454922 | government contract suppliers |
| AHIPARA SANDHOPPERS EARLY CHILDHOOD CENTRE SOCIETY INCORPORATED | Registered | Incorporated Society | - | charities nzbn sync |
| AHITANA FARM LIMITED | Registered | NZ Limited Company | 131716 | |
| AHLUL BAYT SOCIETY WELLINGTON INC | Registered | Incorporated Society | - | charities nzbn sync |
| AHMADIYYA MUSLIM JAMAAT NEW ZEALAND INCORPORATED | Registered | Incorporated Society | - | charities nzbn sync |
| AHU CHARITABLE TRUST KI PUKERUA BAY | Registered | Charitable Trust | - | charities nzbn sync |
| ĀHUA STUDIO LIMITED | Registered | NZ Limited Company | 8781213 | councillor interest |
| AHUAHU GROUP LIMITED | Registered | - | 1915813 | iwi subsidiaries |
| Ahuaku A3 | Unknown | - | - | councillor interest |
| AHUMAI LIMITED | Removed | NZ Limited Company | 2130841 | iwi subsidiaries |
| AHURIRI BUILDING CONTRACTORS LIMITED | Registered | NZ Limited Company | 8250412 | government contract suppliers |
| AHURIRI DISTRICT HEALTH | Registered | Charitable Trust | - | charities nzbn sync |
| AHURIRI ESTUARY PROTECTION SOCIETY INCORPORATED | Registered | Incorporated Society | - | charities nzbn sync |
| AHURIRI MAORI WARDENS CHARITABLE TRUST | Registered | Charitable Trust | - | charities nzbn sync |
| AHURIRI TRIBUTARIES CATCHMENT GROUP TRUST | Registered | Charitable Trust | - | charities nzbn sync |
| AHURU MOWAI TRUST | Registered | Charitable Trust | - | charities nzbn sync |
| AHUWHENUA FENCING LIMITED | Registered | NZ Limited Company | 8548846 | councillor interest |
| AHUWHENUA TRUST BOARD | Registered | Charitable Trust | - | charities nzbn sync |
| AI XIN SOCIETY AUCKLAND | Registered | Charitable Trust | - | charities nzbn sync |
| AIESEC IN AUCKLAND INCORPORATED | Registered | Incorporated Society | - | charities nzbn sync |
| AIG Insurance New Zealand Limited | Unknown | - | - | |
| AIGA PAIA AOGA AMATA INCORPORATED | Registered | Incorporated Society | - | charities nzbn sync |
| AIGA SALEVALASI CHARITABLE TRUST | Registered | Charitable Trust | - | charities nzbn sync |
| Aign Farms Investments Ltd via John Buchanan | Unknown | - | - | political donors |
| AIKIDO AOTEAROA NEW ZEALAND INCORPORATED | Registered | Incorporated Society | - | charities nzbn sync |
| AIKIDO NELSON INCORPORATED | Registered | Incorporated Society | - | charities nzbn sync |
| AIM HIGH CHARITABLE TRUST | Registered | Charitable Trust | - | charities nzbn sync |
| AIMING FOR THE BEST FOR CHILDREN WITH DOWN SYNDROME (OTHERWISE KNOWN AS THE ABCD TRUST) | Registered | Charitable Trust | - | charities nzbn sync |
| AIMS GAMES TRUST | Registered | Charitable Trust | - | charities nzbn sync |
| AINGER TOMLIN AUDIT LIMITED | Registered | NZ Limited Company | 5897768 | charity service providers |
| AINGER TOMLIN LIMITED | Registered | NZ Limited Company | 1574822 | charity service providers |
| AIR ACTION SYSTEMS LIMITED | Registered | NZ Limited Company | 1895056 | government contract suppliers |
| AIR CHATHAMS LIMITED | Registered | NZ Limited Company | 370890 | government contract suppliers |
| Air Con NZ 2000 Ltd | Unknown | - | - | government contract suppliers |
| AIR CON SERVICES LIMITED | Registered | NZ Limited Company | 4445499 | government contract suppliers |
| AIR DYNAMICS LIMITED | Removed | NZ Limited Company | 1951411 | government contract suppliers |
| AIR FLOW PRODUCTS LIMITED | Registered | NZ Limited Company | 517353 | charities nzbn sync |
| Air Force Museum of New Zealand Trust | Unknown | - | - | councillor interest |
| Air Lease Corporation | Unknown | - | - | government contract suppliers |
| AIR MILFORD 2000 LIMITED | Registered | NZ Limited Company | 1105236 | kanoa recipients |
| AIR NEW ZEALAND LIMITED | Registered | NZ Limited Company | 104799 | councillor interest |
| AIR RESCUE SERVICES LIMITED | Unknown | - | - | |
| AIRBNB LIMITED | Registered | - | - | |
| AIREDALE PROPERTY TRUST | Registered | Charitable Trust | - | charities nzbn sync |
| AIRLAB LIMITED | Registered | NZ Limited Company | 104579 | government contract suppliers |
| AIRMASTER AIRCONDITIONING LIMITED | Registered | NZ Limited Company | 1516921 | government contract suppliers |
| AIRSUITE LIMITED | Registered | NZ Limited Company | 7087710 | government contract suppliers |