| BABBAGE CONSULTANTS LIMITED | Registered | NZ Limited Company | 5643728 | government contract suppliers |
| BABY BRAIN LIMITED | Registered | NZ Limited Company | 6124548 | government contract suppliers |
| BAC NEW ZEALAND SYSTEMS LIMITED | Registered | NZ Limited Company | 1206929 | government contract suppliers |
| 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 |
| BACKING THE BAY LIMITED | Removed | - | - | |
| Bahr Sedley Partnership | Unknown | - | - | government contract suppliers |
| Baia Build Ltd | In Liquidation | NZ Limited Company | - | government contract suppliers |
| BAILEY INGHAM LIMITED | Registered | - | - | |
| BAKER GARDEN ARCHITECTS LIMITED | Registered | NZ Limited Company | 526471 | government contract suppliers |
| BAKER TILLY LIMITED | Registered | NZ Limited Company | 7331838 | charity service providers |
| BAKER TILLY STAPLES RODWAY AUDIT LIMITED | Registered | NZ Limited Company | 6014547 | charity service providers |
| BAKER TILLY STAPLES RODWAY LIMITED | Registered | NZ Limited Company | 1333511 | charity service providers |
| Baker Tilly Staples Rodway on behalf of Auditor Ge | Unknown | - | - | charity service providers |
| BAKSHI ENTERPRISES LIMITED | Registered | - | - | |
| Balance Agri Nutrients | Unknown | - | - | councillor interest |
| Balance Agri-nutrients Ltd | Unknown | - | - | councillor interest |
| Balance Agrinutrients | Unknown | - | - | councillor interest |
| Balance Aotearoa | Registered | Charitable Trust | - | government contract suppliers |
| Balance Fert Co-Operative | Unknown | - | - | councillor interest |
| Balance Internet | Unknown | - | - | government contract suppliers |
| BALANCE LIMITED | Removed | NZ Limited Company | 1114141 | councillor interest |
| BALANCE PSYCHOLOGY AOTEAROA LIMITED | Registered | NZ Limited Company | 8181709 | government contract suppliers |
| BALANCE WEALTH LIMITED | Registered | NZ Limited Company | 1150106 | government contract suppliers |
| Balcairn Public Hall Committee | Unknown | - | - | councillor interest |
| BALCARRES FARMS LIMITED | Registered | NZ Limited Company | 1950993 | councillor interest |
| Baldasso Cortese Noordanus Architects | Unknown | - | - | government contract suppliers |
| BALDASSO CORTESE NOORDANUS LIMITED | Registered | NZ Limited Company | 7933796 | government contract suppliers |
| BALFOUR CLEANING CO LIMITED | Registered | NZ Limited Company | 19799 | government contract suppliers |
| BALLANCE AGRI-NUTRIENTS LIMITED | Registered | NZ Co-operative Company | 178492 | government contract suppliers |
| BALLANCE LIMITED | Registered | - | - | |
| Baltia Airlines | Unknown | - | - | councillor interest |
| Baltic Airlines | Unknown | - | - | councillor interest |
| BANANAWORKS COMMUNICATIONS LIMITED | Registered | NZ Limited Company | 1510387 | government contract suppliers |
| BANCORP CORPORATE FINANCE LIMITED | Registered | NZ Limited Company | 1860076 | government contract suppliers |
| BANCORP TREASURY SERVICES LIMITED | Registered | NZ Limited Company | 1143838 | government contract suppliers |
| Bank Chambers | Unknown | - | - | councillor interest |
| BANK OF CHINA (NEW ZEALAND) LIMITED | Registered | NZ Limited Company | 5305661 | government contract suppliers |
| BANK OF NEW ZEALAND | Registered | NZ Limited Company | 428849 | government contract suppliers |
| BANKS PENINSULA AUTOMOTIVE LIMITED | Registered | NZ Limited Company | 4038778 | councillor interest |
| Banks Peninsula Conservation Trust | Registered | Charitable Trust | - | councillor interest |
| Banks Peninsula War Memorial Society | Registered | Incorporated Society | - | councillor interest |
| Banks Peninsula War Memorial Trust | Unknown | - | - | councillor interest |
| Banks Peninsula War Memorials Society | Unknown | - | - | councillor interest |
| BANKS PENINSULA WOOL GROWERS LIMITED | Registered | - | - | |