| J.P. MORGAN LIMITED | Removed | NZ Limited Company | 403488 | fund managers |
| J.T.P. CONSULTANTS LIMITED | Registered | NZ Limited Company | 1809001 | government contract suppliers |
| J&C EARTHWORKS & FENCING LIMITED | Registered | NZ Limited Company | 9304619 | government contract suppliers |
| JA & JM Kay Family Trust | Unknown | - | - | councillor interest |
| JA JELLYMAN LIMITED | Registered | NZ Limited Company | 4345205 | councillor interest |
| Jack & Marjorie Ferrier Trust | Unknown | - | - | councillor interest |
| JACK THORBURN BUILDERS LIMITED | Registered | NZ Limited Company | 266240 | government contract suppliers |
| Jackie Ellis | Unknown | - | - | government contract suppliers |
| Jackson Allison Medical & Surgical Ltd | Unknown | - | - | government contract suppliers |
| JACKSON ENGINEERING ADVISERS LIMITED | Registered | NZ Limited Company | 684746 | government contract suppliers |
| JACKSON ENTERPRISES LIMITED | Registered | NZ Limited Company | 114106 | government contract suppliers |
| JACKSON FLOORING COMMERCIAL (HB) LIMITED | Registered | NZ Limited Company | 1696313 | government contract suppliers |
| Jackson Street Programme Inc | Registered | Incorporated Society | - | councillor interest |
| JACKSONSTONE & PARTNERS LIMITED | Registered | NZ Limited Company | 2366543 | government contract suppliers |
| JacksonStone and Parters | Unknown | - | - | government contract suppliers |
| JACOBS (NZ) HOLDINGS LIMITED | Registered | NZ Limited Company | 968562 | government contract suppliers |
| JACOBS NEW ZEALAND LIMITED | Registered | NZ Limited Company | 896029 | government contract suppliers |
| Jacqui Menzies Family Trust | Unknown | - | - | councillor interest |
| JACS TOTAL MAINTENANCE LIMITED | Registered | NZ Limited Company | 5713290 | government contract suppliers |
| JAE MY HOLDINGS (NZ) LIMITED | Registered | NZ Limited Company | 1665238 | political donors |
| JAFI FAMILY LIMITED | Removed | NZ Limited Company | 1799133 | |
| JAKE FLETCHER CONTRACTING LIMITED | Registered | NZ Limited Company | 8590048 | government contract suppliers |
| JAL DEVELOPMENTS LIMITED | Registered | NZ Limited Company | 1239559 | government contract suppliers |
| JAMES & BROWN PROPERTIES LIMITED | Registered | NZ Limited Company | 8344322 | |
| James and Monroe | Unknown | - | - | government contract suppliers |
| JAMES BENNETT HOLDINGS LIMITED | Removed | NZ Limited Company | 81323 | government contract suppliers |
| JAMES BROWN INSURANCES LIMITED | Registered | NZ Limited Company | 1143482 | |
| JAMES BROWN INVESTMENTS LIMITED | Registered | NZ Limited Company | 6427032 | |
| JAMES BROWN LIMITED | Removed | NZ Limited Company | 1275273 | |
| James Bushnell | Unknown | - | - | government contract suppliers |
| James Carruthers - Barrister | Registered | Sole Trader | - | government contract suppliers |
| James Cook Hotel Grand Chancellor | Unknown | - | - | government contract suppliers |
| JAMES COOK LIMITED | Registered | NZ Limited Company | 1535183 | government contract suppliers |
| JAMES DANIEL LIMITED | Removed | NZ Limited Company | 403323 | |
| JAMES DAVIS CONTRACTING LIMITED | Registered | NZ Limited Company | 1876468 | |
| JAMES FLETCHER MANAGEMENT LIMITED | Registered | NZ Limited Company | 5502624 | |
| JAMES GILCHRIST RESETTLEMENT TRUST LIMITED | Registered | NZ Limited Company | 6331972 | mp interest |
| JAMES HARDIE PIPELINES LIMITED | Removed | NZ Limited Company | 97976 | |
| James Hargest High School | Unknown | - | - | councillor interest |
| JAMES HENRY LIMITED | Registered | NZ Limited Company | 509909 | government contract suppliers |
| James Hoban | Unknown | - | - | government contract suppliers |
| JAMES INSURANCE MANAGEMENT LIMITED | Removed | NZ Limited Company | 384194 | |
| JAMES JACK ARCHITECTS LIMITED | Removed | NZ Limited Company | 2111260 | |
| JAMES LIMITED | Removed | - | - | |
| JAMES PALMER LIMITED | Registered | NZ Limited Company | 3153546 | |
| JAMES PAUL SHEPHERD INDEPENDENT WW TRUSTEE LIMITED | Registered | NZ Limited Company | 9366966 | |
| James Rapley QC | Unknown | - | - | government contract suppliers |
| JAMES SHAW DISTRIBUTING CO LIMITED | Removed | NZ Limited Company | 7582 | |
| JAMES SHAW PROPERTIES LIMITED | Registered | NZ Limited Company | 440955 | |
| JAMES THOMAS PROPERTY MANAGEMENT LIMITED | Removed | NZ Limited Company | 5470344 | |
