| BLOXAM, BURNETT AND OLLIVER LIMITED | Registered | NZ Limited Company | 581333 | government contract suppliers |
| BLUE ABYSS PHOTOGRAPHY & DIVE SPECIALIST SERVICES LIMITED | Registered | NZ Limited Company | 8181226 | government contract suppliers |
| Blue Alchemy Labs | Unknown | - | - | government contract suppliers |
| BLUE BARN CONSULTING LIMITED | Registered | NZ Limited Company | 2183478 | government contract suppliers |
| BLUE EARTH ENGINEERING RESOURCES LIMITED | Registered | NZ Limited Company | 8127044 | government contract suppliers |
| Blue Economy CRC | Unknown | - | - | corporate donations |
| BLUE FITNESS LIMITED | Registered | NZ Limited Company | 4395940 | government contract suppliers |
| BLUE GROUP NZ LIMITED | Removed | NZ Limited Company | 3554591 | government contract suppliers |
| Blue Light Ventures Inc | Registered | Incorporated Society | - | kanoa recipientsgovernment contract suppliers |
| Blue Oval Group Limited | Unknown | - | - | councillor interest |
| BLUE PACIFIC GROUP LIMITED | Registered | NZ Limited Company | 9000825 | councillor interest |
| BLUE STAR GROUP (NEW ZEALAND) LIMITED | Registered | NZ Limited Company | 1120709 | government contract suppliers |
| BLUE STAR LIMITED | Removed | NZ Limited Company | 579744 | government contract suppliers |
| BLUE WATER MARINE RESEARCH LIMITED | Registered | NZ Limited Company | 884456 | government contract suppliers |
| BLUE WING HONDA LIMITED | Registered | NZ Limited Company | 69904 | government contract suppliers |
| BLUEBOTTLE PROPERTY LIMITED | Registered | - | - | |
| BlueCat Networks, Inc. | Unknown | - | - | government contract suppliers |
| BLUEPRINT CONSULTING ENGINEERS LIMITED | Registered | NZ Limited Company | 1452020 | government contract suppliers |
| Blueskin Bay Library Redevelopment Trust | Registered | Charitable Trust | - | mp interest |
| Bluestar Promote Ltd | Unknown | - | - | government contract suppliers |
| BLUEY WILLIAMS LIMITED | Registered | NZ Limited Company | 1863992 | government contract suppliers |
| Bluff Bowling Club | Registered | Incorporated Society | - | corporate donations |
| BLUFF ENGINEERING & WELDING CO LIMITED | Registered | NZ Limited Company | 3219506 | kanoa recipients |
| Bluff Hill Motupōhue Environment Trust | Registered | Charitable Trust | - | corporate donations |
| Bluff Kindergarten | Unknown | - | - | corporate donations |
| BLUFF LIMITED | Removed | NZ Limited Company | 3438953 | kanoa recipients |
| Bluff Maritime Museum | Registered | Charitable Trust | - | councillor interest |
| Bluff Netball Club | Unknown | - | - | corporate donations |
| Bluff Promotions | Registered | Incorporated Society | - | corporate donations |
| Bluff Rugby Club | Unknown | - | - | corporate donations |
| Bluff School | Registered | Education | - | corporate donations |
| Bluff Schools | Unknown | - | - | corporate donations |
| Bluff Volunteer Fire Brigade | Unknown | - | - | corporate donations |
| BMC SOFTWARE (NEW ZEALAND) LIMITED | Registered | NZ Limited Company | 313949 | government contract suppliers |
| BMF NZ Ltd | Unknown | - | - | government contract suppliers |
| BMS RISK SOLUTIONS (NZ) LIMITED | Registered | NZ Limited Company | 7276897 | government contract suppliers |
| BMW NEW ZEALAND LIMITED | Registered | NZ Limited Company | 56683 | government contract suppliers |
| BNP PARIBAS NOMINEES (NZ) LIMITED | Registered | NZ Limited Company | 1104628 | custodian fund mappings |
| BNZ INVESTMENT SERVICES LIMITED | Removed | NZ Limited Company | 354241 | fund managers |
| BNZ SERVICES LIMITED | Removed | NZ Limited Company | 350083 | government contract suppliers |
| Board and Batten Trust | Unknown | - | - | councillor interest |
| Board of Trustees Fee From Kelston Boys High School | Unknown | - | - | mp interest |
| BOARDPRO LIMITED | Registered | NZ Limited Company | 5780387 | councillor interest |
| BOB INVESTMENTS LIMITED | Registered | NZ Limited Company | 1165864 | councillor interest |
| Bob Trust | Unknown | - | - | councillor interest |
| BOBADAH PASTORAL LIMITED | Registered | NZ Limited Company | 7009473 | councillor interest |
| BOC LIMITED | Registered | NZ Limited Company | 7748 | government contract suppliers |
| BODEKER SCIENTIFIC LIMITED | Registered | NZ Limited Company | 2314889 | government contract suppliers |
| BODY IN MOTION LIMITED | Registered | NZ Limited Company | 5847229 | government contract suppliers |
| BODY IN MOTION PHYSIOTHERAPY & REHABILITATION LIMITED | Registered | NZ Limited Company | 1170736 | government contract suppliers |
