| BURNAGE ROAD ORCHARDS LIMITED | Registered | NZ Limited Company | 7052478 | kanoa recipients |
| BURNRITE FARMS LIMITED | Registered | NZ Limited Company | 183585 | councillor interest |
| BURNS & FERRALL LIMITED | Removed | NZ Limited Company | 366449 | government contract suppliers |
| Burnside Bowling Club | Registered | Incorporated Society | - | councillor interest |
| BURRELL'S LIMITED | Registered | - | - | |
| BURT FAMILY TRUST LIMITED | Registered | NZ Limited Company | 5460269 | councillor interest |
| Burt Munro Challenge | Registered | Incorporated Society | - | corporate donations |
| BURTON CONSTRUCTION & MAINTENANCE LIMITED | Registered | NZ Limited Company | 4744243 | government contract suppliers |
| BURTON CONSTRUCTION LIMITED | Registered | NZ Limited Company | 9333150 | government contract suppliers |
| BURWOOD RESOURCE RECOVERY PARK LIMITED | Removed | NZ Limited Company | 3315709 | councillor interest |
| BUSCK ASHBURTON LIMITED | Registered | NZ Limited Company | 8716467 | councillor interest |
| BUSCK CONCRETE LIMITED | Removed | NZ Limited Company | 45292 | councillor interest |
| BUSCK GROUP LIMITED | Registered | NZ Limited Company | 8107121 | councillor interest |
| BUSCK INVERCARGILL LIMITED | Registered | NZ Limited Company | 8127753 | councillor interest |
| BUSCK MANAGEMENT LIMITED | Registered | NZ Limited Company | 4289698 | councillor interest |
| BUSCK MORRINSVILLE LIMITED | Registered | NZ Limited Company | 8144754 | councillor interest |
| BUSCK PRESTRESSED CONCRETE LIMITED | Registered | NZ Limited Company | 60777 | councillor interest |
| BUSH CREEK ROAD INVESTMENTS LIMITED | Registered | - | - | |
| BUSHCRAFT CONTRACTING LIMITED | Registered | NZ Limited Company | 8538966 | government contract suppliers |
| BUSHNELL BUILDERS LIMITED | Registered | NZ Limited Company | 4350918 | government contract suppliers |
| Bushy Park Trust | Registered | Charitable Trust | - | councillor interest |
| Business & Professional Women Hāwera | Unknown | - | - | councillor interest |
| BUSINESS AND ECONOMIC RESEARCH LIMITED | Registered | NZ Limited Company | 11961 | government contract suppliers |
| BUSINESS CENTRAL ENTERPRISE LIMITED | Removed | NZ Limited Company | 5599266 | government contract suppliers |
| Business Hawke's Bay Incorporated | Removed | Incorporated Society | - | kanoa recipients |
| BUSINESS INTEG LIMITED | Registered | - | - | |
| BUSINESS NEW ZEALAND LIMITED | Registered | NZ Limited Company | 1908873 | political donors |
| BUSINESS RELOCATIONS LIMITED | Registered | NZ Limited Company | 6002608 | government contract suppliers |
| Business South and Workforce Central | Unknown | - | - | kanoa recipients |
| Business Trust Marlborough Inc | Registered | Charitable Trust | - | councillor interest |
| Busking Parks Trust | Unknown | - | - | councillor interest |
| BUTE FARM TAONUI LIMITED | Registered | NZ Limited Company | 4320858 | councillor interest |
| BUTLER & HEWITT (2015) LIMITED | Registered | NZ Limited Company | 5592009 | government contract suppliers |
| BUTLER FAMILY TRUSTEE LIMITED | Registered | NZ Limited Company | 8226971 | councillor interest |
| BUTLER TECHSENSE LIMITED | Registered | NZ Limited Company | 7089753 | government contract suppliers |
| BUTTERCUP DAIRIES LIMITED | Registered | NZ Limited Company | 6264756 | councillor interest |
| Buxton Brewers Trust | Unknown | - | - | councillor interest |
| BUXTON TRADING COMPANY LIMITED | Registered | NZ Limited Company | 7475676 | councillor interest |
| BUZZ CHANNELS GLOBAL LIMITED | Registered | NZ Limited Company | 9375123 | government contract suppliers |
| BXTACCELYON NZ LIMITED | Registered | NZ Limited Company | 4608499 | government contract suppliers |
| Byfords Construction 2014 Ltd | Unknown | - | - | government contract suppliers |
| C & E MOTORS LIMITED | Registered | NZ Limited Company | 8189831 | government contract suppliers |
| C & J HEATH LIMITED | Registered | NZ Limited Company | 1919183 | government contract suppliers |
| C 4 GROUP LIMITED | Registered | NZ Limited Company | 1685683 | government contract suppliers |
| C B Developments Limited t/a Opito | Unknown | - | - | government contract suppliers |
| C B NORWOOD DISTRIBUTORS LIMITED | Registered | NZ Limited Company | 457076 | kanoa recipients |
| C BROWN BUILDERS LIMITED | Registered | NZ Limited Company | 2097862 | government contract suppliers |
| C ET AL LIMITED | Registered | - | - | |
| C H Faul division Aquaheat Facility Services Ltd | Unknown | - | - | government contract suppliers |
| C J BUILDING SERVICES (2007) LIMITED | Registered | NZ Limited Company | 1935482 | government contract suppliers |