| AXT Pty Ltd | Unknown | - | - | government contract suppliers |
| Ayesha Verrall Trust | Unknown | - | - | mp interest |
| AYRLIES GARDEN AND WETLANDS CHARITABLE TRUST | Registered | Charitable Trust | - | charities nzbn sync |
| Ayus Charitable Trust | Registered | Trust | - | charities nzbn sync |
| AZALEA PRESBYTERIAN CHURCH | Registered | Charitable Trust | - | charities nzbn sync |
| AZTEC BUILDERS AUCKLAND LIMITED | Registered | NZ Limited Company | 2269629 | government contract suppliers |
| AZTEC INVESTMENTS LIMITED | Removed | - | - | |
| Azwood Energy | Unknown | - | - | government contract suppliers |
| AZWOOD LIMITED | Registered | NZ Limited Company | 2345972 | government contract suppliers |
| AZZURRI FOOTBALL CLUB LIMITED | Registered | NZ Limited Company | 1871737 | charities nzbn sync |
| B & C CONTRACTORS LIMITED | Removed | NZ Limited Company | 895912 | government contract suppliers |
| B & J WATSON LIMITED | Removed | NZ Limited Company | 1097249 | |
| B & W INVESTMENT HOLDING LIMITED | Registered | - | - | |
| B & W MORTGAGES HOLDING LIMITED | Registered | - | - | |
| B and C Contractors Ltd | Unknown | - | - | government contract suppliers |
| B D and PJAC Hazlitt Family Trust | Unknown | - | - | kanoa recipients |
| B Dudley Trust | Unknown | - | - | councillor interest |
| B G CONTRACTING LIMITED | Registered | NZ Limited Company | 1005145 | government contract suppliers |
| B L STRINGER & CO LIMITED | Registered | NZ Limited Company | 135565 | government contract suppliers |
| B MOSS & S DUNBIER CHARITABLE TRUST BOARD | Registered | Charitable Trust | - | charities nzbn sync |
| B R TURFREY LIMITED | Registered | NZ Limited Company | 164638 | government contract suppliers |
| B W OBRIEN & CO LIMITED | Registered | NZ Limited Company | 31379 | government contract suppliers |
| B. Braun New Zealand Pty Limited | Unknown | - | - | government contract suppliers |
| B.W.Newth Residential Construction Ltd | Unknown | - | - | government contract suppliers |
| B&C Contractor Ltd | Unknown | - | - | government contract suppliers |
| B+L Black Ltd | Unknown | - | - | councillor interest |
| B12 SPORTS INCORPORATED | Registered | Incorporated Society | - | charities nzbn sync |
| B3 BUILDING MAINTENANCE LIMITED | Registered | NZ Limited Company | 8259282 | government contract suppliers |
| BA Dudley Trust Partnership | Unknown | - | - | councillor interest |
| BAAL BHAKTI CHARITABLE TRUST NZ | Registered | Charitable Trust | - | charities nzbn sync |
| BABBAGE CONSULTANTS LIMITED | Registered | NZ Limited Company | 5643728 | government contract suppliers |
| BABE KE BHAGAT'S (SAINT) SHRINE CHARITABLE TRUST | Registered | Charitable Trust | - | charities nzbn sync |
| BABS LIMITED | Registered | NZ Limited Company | 1877090 | charities nzbn sync |
| BABY BRAIN LIMITED | Registered | NZ Limited Company | 6124548 | government contract suppliers |
| BABY LOSS NZ | Registered | Charitable Trust | - | charities nzbn sync |
| BABYLON CHARITABLE TRUST | Registered | Charitable Trust | - | charities nzbn sync |
| BABYLON COMMUNITY DEVELOPMENT CHARITABLE TRUST | Registered | Charitable Trust | - | charities nzbn sync |
| BABYSTART CHARITABLE TRUST | Registered | Charitable Trust | - | charities nzbn sync |
| BAC NEW ZEALAND SYSTEMS LIMITED | Registered | NZ Limited Company | 1206929 | government contract suppliers |
| BACH MUSICA NZ INCORPORATED | Registered | Incorporated Society | - | charities nzbn sync |
| BACK COUNTRY SOLUTIONS LIMITED | Registered | NZ Limited Company | 8491746 | government contract suppliers |
| BACK TO BUSH LIMITED | Registered | NZ Limited Company | 3945838 | government contract suppliers |
| Back to School fund | Unknown | - | - | corporate donations |
| BACK TO WORK LIMITED | Registered | NZ Limited Company | 958851 | government contract suppliers |
| BACKCOUNTRY CONTRACTING LIMITED | Registered | NZ Limited Company | 1486541 | government contract suppliers |
| BACKCOUNTRY ENTERPRISES LIMITED | Registered | NZ Limited Company | 1965968 | government contract suppliers |
| Backcountry Helicopters | Registered | NZ Limited Company | - | kanoa recipients |
| BACKCOUNTRY TRUST (AOTEAROA/ NEW ZEALAND) | Registered | Charitable Trust | - | charities nzbn sync |
| BACKING THE BAY LIMITED | Removed | - | - | |
| BADEN POWELL GUILD OF NEW ZEALAND INCORPORATED | Removed | Incorporated Society | - | charities nzbn sync |