| BODY POSITIVE - NEW ZEALAND INCORPORATED | Registered | Incorporated Society | - | government contract suppliers |
| BODYCODE HEALTH LIMITED | Registered | NZ Limited Company | 6042348 | councillor interest |
| BOEHRINGER INGELHEIM ANIMAL HEALTH NEW ZEALAND LIMITED | Registered | NZ Limited Company | 664734 | government contract suppliers |
| BOEHRINGER INGELHEIM N Z LIMITED | Registered | NZ Limited Company | 88986 | government contract suppliers |
| BOEING HOME COMPANY LIMITED | Registered | NZ Limited Company | 1735212 | councillor interest |
| BOFFA MISKELL LIMITED | Registered | NZ Limited Company | 272994 | government contract suppliers |
| Boffa Miskell Limited - Wellington | Unknown | - | - | government contract suppliers |
| BOI Plumbing and Drainage Ltd | Unknown | - | - | government contract suppliers |
| Bold Steps Conference | Unknown | - | - | corporate donations |
| Bold Trading | Unknown | - | - | government contract suppliers |
| Bolinda Digital Pty Ltd | Unknown | - | - | government contract suppliers |
| Bolinda Publishing Pty Ltd | Unknown | - | - | government contract suppliers |
| BON Business Trust | Unknown | - | - | mp interest |
| BONAPARTE PROPERTIES LIMITED | Registered | NZ Limited Company | 559970 | councillor interest |
| BONAR FARMS LIMITED | Registered | NZ Limited Company | 1048316 | councillor interest |
| BOND CONSTRUCTION MANAGEMENT LIMITED | Registered | NZ Limited Company | 639477 | government contract suppliers |
| BOND CONTRACTS LIMITED | Removed | NZ Limited Company | - | government contract suppliers |
| BONISCH CONSULTANTS LIMITED | Registered | NZ Limited Company | 3010221 | government contract suppliers |
| BONJOUREIN LIMITED | Registered | - | - | |
| BONNAR ELECTRICAL LIMITED | Registered | NZ Limited Company | 8356840 | councillor interest |
| Bonus Bonds: ANZ | Unknown | - | - | councillor interest |
| Books in Homes Australia | Unknown | - | - | corporate donations |
| Books In Homes USA | Unknown | - | - | corporate donations |
| BOOMING BUILDERS LIMITED | Registered | NZ Limited Company | 6486012 | government contract suppliers |
| BOON LIMITED | Registered | NZ Limited Company | 236641 | government contract suppliers |
| BOOST LIMITED | Registered | NZ Limited Company | 1061079 | government contract suppliers |
| BOOST PROMOTIONS LIMITED | Registered | NZ Limited Company | 1220964 | government contract suppliers |
| Boost Temuka | Registered | Incorporated Society | - | councillor interest |
| BOOST VOCATIONAL NZ LIMITED | Registered | NZ Limited Company | 8186535 | government contract suppliers |
| BOOSTER FINANCIAL SERVICES LIMITED | Registered | - | - | |
| BOOSTER INVESTMENT MANAGEMENT LIMITED | Registered | - | - | |
| BOP RESIDENTIAL LIMITED | Registered | NZ Limited Company | 8039366 | government contract suppliers |
| BORCOSKI ENERGY SERVICES LIMITED | Registered | NZ Limited Company | 2153455 | government contract suppliers |
| BORONIA PROPERTIES LIMITED | Registered | NZ Limited Company | 1372381 | councillor interest |
| BORRMEISTER ARCHITECTS LIMITED | Registered | NZ Limited Company | 1711952 | government contract suppliers |
| BOSS BUILDING SERVICES LIMITED | Registered | NZ Limited Company | 4029258 | government contract suppliers |
| Bossley Architects | Unknown | - | - | government contract suppliers |
| Boston Scientific New Zealand Limited | Unknown | - | - | government contract suppliers |
| BOSTON TRADING LIMITED | Removed | NZ Limited Company | 663069 | government contract suppliers |
| Boucher & Muir (NZ) Ltd | Unknown | - | - | government contract suppliers |
| BOULCOTT PULSE HEALTH LIMITED | Registered | NZ Limited Company | 5845250 | government contract suppliers |
| Bourneville Furniture | Unknown | - | - | government contract suppliers |
| Bourneville Furniture Group | Unknown | - | - | government contract suppliers |
| Bourneville Furniture Group (BFG) | Unknown | - | - | government contract suppliers |
| BOWE NEW ZEALAND LIMITED | Registered | NZ Limited Company | 383193 | government contract suppliers |
| BOWLS EVENTS NZ LIMITED | Removed | NZ Limited Company | 1105584 | corporate donations |
| BOXFISH ROBOTICS LIMITED | Registered | NZ Limited Company | 6160327 | government contract suppliers |
| BOXING NEW ZEALAND INCORPORATED | Registered | - | - | |
| Boys and Girls Club of Hawaii | Unknown | - | - | corporate donations |
| BP OIL NEW ZEALAND LIMITED | Registered | NZ Limited Company | 5068 | government contract suppliers |
