| ICHOR LEADERSHIP SEARCH LIMITED | Registered | NZ Limited Company | 986101 | government contract suppliers |
| ICIB BROKERWEB LIMITED | Registered | NZ Limited Company | 5503337 | government contract suppliers |
| ICL CONSTRUCTION (2016) LIMITED | Removed | NZ Limited Company | 5919027 | government contract suppliers |
| ICON CUSTOM BOATS LIMITED | Registered | NZ Limited Company | 2219092 | government contract suppliers |
| ICONA LIMITED | Registered | NZ Limited Company | 1281610 | government contract suppliers |
| ICONIC CLADDING LIMITED | Registered | NZ Limited Company | 6915894 | government contract suppliers |
| ICONIQ CONSTRUCTION GROUP LIMITED | Registered | NZ Limited Company | 7711439 | government contract suppliers |
| ICP GENERAL PARTNER LIMITED | Registered | NZ Limited Company | 3140305 | iwi subsidiaries |
| ICU MEDICAL AUSTRALIA HOLDINGS PTY LIMITED | Registered | Overseas ASIC Company | 6193367 | government contract suppliers |
| ID Consulting Pty Ltd | Unknown | - | - | government contract suppliers |
| ID DUNEDIN FASHION INCORPORATED | Registered | - | - | |
| ID LIMITED | Removed | NZ Limited Company | 1012919 | kanoa recipients |
| ID SOLUTIONS LIMITED | Registered | NZ Limited Company | 848130 | government contract suppliers |
| IDA DESIGN LIMITED | Registered | NZ Limited Company | 6363176 | government contract suppliers |
| Ida MacDonald Trust | Registered | Charitable Trust | - | councillor interest |
| Idea Elan | Unknown | - | - | government contract suppliers |
| IDEA SERVICES LIMITED | Registered | - | - | |
| IDEAL ELECTRICAL SUPPLIERS LIMITED | Removed | NZ Limited Company | 477602 | government contract suppliers |
| IDEMIA AUSTRALASIA PTY LTD | Registered | Overseas ASIC Company | 2300606 | government contract suppliers |
| IDEXX LABORATORIES (NZ) LIMITED | Removed | NZ Limited Company | 826585 | government contract suppliers |
| IDEXX LABORATORIES II (NZ) ULC | Registered | NZ Unlimited Company | 5706572 | government contract suppliers |
| IEF LIMITED | Registered | NZ Limited Company | 1524214 | political donors |
| IF and HK Trust | Unknown | - | - | councillor interest |
| IFIRE PROTECTION LIMITED | Registered | NZ Limited Company | 5639227 | government contract suppliers |
| IFLY INDOOR SKYDIVING NZ LIMITED | Registered | NZ Limited Company | 4723320 | councillor interest |
| IGNITE ARCHITECTS KERIKERI LIMITED | Removed | NZ Limited Company | 2198550 | government contract suppliers |
| IGNITE ARCHITECTURE LIMITED | Registered | NZ Limited Company | 6277127 | government contract suppliers |
| IGNITE NZ LIMITED | Registered | NZ Limited Company | 5840271 | government contract suppliers |
| Ignite Partners Ltd. | Unknown | - | - | government contract suppliers |
| Ignite Youth | Registered | Charitable Trust | - | corporate donations |
| IGNITION ENTERPRISES LIMITED | Registered | - | - | |
| IHC LIMITED | Registered | NZ Limited Company | 7094373 | government contract suppliers |
| IHI RESEARCH AND DEVELOPMENT LIMITED | Registered | NZ Limited Company | 4777679 | government contract suppliers |
| IHOW CHARITABLE TRUST | Removed | Charitable Trust | - | government contract suppliers |
| Ihukatia Trust | Unknown | - | - | councillor interest |
| Ihutai Estuary Trust | Unknown | - | - | councillor interest |
| IIC TECHNOLOGIES LIMITED | Registered | NZ Limited Company | 7341719 | government contract suppliers |
| IKA CONSULTING LIMITED | Registered | NZ Limited Company | 1948753 | political donors |
| IKA TOA LIMITED | Registered | NZ Limited Company | 521364 | iwi subsidiaries |
| IKON ARCHITECTS LIMITED | Registered | NZ Limited Company | 6085849 | government contract suppliers |
| ILINE CONSTRUCTION GROUP LIMITED | Registered | NZ Limited Company | 5478933 | government contract suppliers |
| Illumina Australia Pty Ltd | Unknown | - | - | government contract suppliers |
| ILLUMINA LIMITED | Removed | NZ Limited Company | 6115049 | government contract suppliers |
| ILM LIMITED | Registered | NZ Limited Company | 3823478 | councillor interest |
| ILUME NZ LIMITED | Registered | NZ Limited Company | 2116423 | government contract suppliers |
| IMA SERVICES LIMITED | Registered | NZ Limited Company | 7440376 | government contract suppliers |
| IMAGE COMMERCIAL INTERIORS LIMITED | Registered | NZ Limited Company | 653356 | government contract suppliers |
| Image Construction Ltd | Unknown | - | - | government contract suppliers |
| IMAGINATION TELEVISION LIMITED | Registered | NZ Limited Company | 1010150 | government contract suppliers |
| IMAK ADVICE LIMITED | Registered | NZ Limited Company | 4417198 | political donors |