| BAY FINANCIAL MENTORS HOLDINGS LIMITED | Registered | NZ Limited Company | 9410746 | government contract suppliers |
| BAY MARINE WORKS LIMITED | Registered | NZ Limited Company | 4554180 | government contract suppliers |
| BAY OCCUPATIONAL HEALTH CONSULTANCY LIMITED | Registered | NZ Limited Company | 1617311 | government contract suppliers |
| Bay of Islands Plumbing and Drainage Limited | Unknown | - | - | government contract suppliers |
| Bay of Plenty Automobile Association | Unknown | - | - | councillor interest |
| BAY OF PLENTY LIMITED | Registered | NZ Limited Company | 7915176 | councillor interest |
| Bay of Plenty Youth Development Trust | Registered | Charitable Trust | - | councillor interestkanoa recipientsgovernment contract suppliers |
| BAY PEST ERADICATION LIMITED | Registered | NZ Limited Company | 4909120 | government contract suppliers |
| BAY PINE FORESTRY LIMITED | Registered | NZ Limited Company | 1103565 | government contract suppliers |
| BAY PSYCHOLOGY LIMITED | Registered | NZ Limited Company | 7411276 | government contract suppliers |
| Bay Regional Sports Park Trust | Registered | Charitable Trust | - | mp interest |
| Bay Regional Sports Trust | Unknown | - | - | mp interest |
| BAY REHAB LIMITED | Registered | NZ Limited Company | 1692788 | government contract suppliers |
| BAY TECHNOLOGY SERVICES (2008) LIMITED | Registered | NZ Limited Company | 2158485 | councillor interest |
| Bay Underwater Services NZ Ltd | Unknown | - | - | government contract suppliers |
| BAY VEHICLE MODIFICATIONS LIMITED | Registered | NZ Limited Company | 1105728 | government contract suppliers |
| Bay Venues Limited T/A Bay Catering | Unknown | - | - | government contract suppliers |
| BAYCITY COMMUNICATIONS LIMITED | Registered | NZ Limited Company | 1220048 | government contract suppliers |
| BAYCORP (NZ) LIMITED | Registered | NZ Limited Company | 1821297 | government contract suppliers |
| BAYER LIMITED | Removed | NZ Limited Company | 3409731 | government contract suppliers |
| BAYES COACHLINES LIMITED | Registered | NZ Limited Company | 80689 | government contract suppliers |
| BAYESIAN DEMOGRAPHY LIMITED | Registered | NZ Limited Company | 7313736 | government contract suppliers |
| BAYGOLD HOLDINGS LIMITED | Registered | NZ Limited Company | 2377989 | councillor interest |
| Baygold Holdings Ltd, Acme Mechanical Services Ltd | Unknown | - | - | councillor interest |
| BAYGOLD LIMITED | Registered | NZ Limited Company | 1954561 | councillor interest |
| Baygold Ltd Partnership | Unknown | - | - | councillor interest |
| BAYLEY CORPORATION LIMITED | Registered | NZ Limited Company | 342183 | political donors |
| BAYLEYS REAL ESTATE LIMITED | Registered | NZ Limited Company | 88609 | government contract suppliers |
| Bayleys Whanganui, Bartley Real Estate Limited | Unknown | - | - | government contract suppliers |
| BAYLIS BROS (LEESTON) LIMITED | Registered | NZ Limited Company | 123626 | government contract suppliers |
| BAYLOGICS LIMITED | Registered | NZ Limited Company | 1564974 | government contract suppliers |
| Baylys Beach Community Centre Trust | Registered | Charitable Trust | - | kanoa recipients |
| Bayspray (2007) Ltd | Unknown | - | - | government contract suppliers |
| BAYTRAP LIMITED | Registered | NZ Limited Company | 1445114 | government contract suppliers |
| BAYTRUST CHARITIES LIMITED | Registered | NZ Limited Company | 7548038 | councillor interest |
| BAYWIDE FENCING LIMITED | Registered | NZ Limited Company | 1777255 | government contract suppliers |
| BB CONSTRUCTION LIMITED | Registered | NZ Limited Company | 2442767 | government contract suppliers |
| BBI WOOD PRODUCTS LIMITED | Registered | NZ Limited Company | 1854158 | kanoa recipients |
| BC FARMING PARTNERSHIP LIMITED | Registered | NZ Limited Company | 9134032 | councillor interest |
| BCD GROUP LIMITED | Registered | NZ Limited Company | 2478811 | government contract suppliers |
| BCE CATERING EQUIPMENT LIMITED | Removed | NZ Limited Company | 896339 | government contract suppliers |
| BCG CIVIL LIMITED | Registered | NZ Limited Company | 6789954 | government contract suppliers |
| BCG CONSTRUCTION LIMITED | Registered | NZ Limited Company | 4623001 | government contract suppliers |
| BCG/CRAVE LIMITED | Registered | NZ Limited Company | 1589529 | government contract suppliers |
| BCITO LIMITED | Registered | - | - | |
| BCL NZ LIMITED | Removed | NZ Limited Company | 6072953 | iwi subsidiaries |
| BCON CONSULTANTS LIMITED | Registered | NZ Limited Company | 4332218 | government contract suppliers |
| BDÉT | Unknown | - | - | government contract suppliers |
| BDF EARTHWORKS LIMITED | Registered | NZ Limited Company | 8623106 | government contract suppliers |
| BDL Mowing & Gardens | Unknown | - | - | councillor interest |