| InterSoft Systems | Hawke's Bay |
| Intranel Consulting Services Ltd | |
| Intuitive Systems | Auckland |
| Inventas Media | Wellington |
| Ion Technologies | Northland |
| iPayroll Ltd | Auckland |
| IPC Computer Solutions | Canterbury |
| IPromise Ltd | |
| iQuote Ltd | |
| ISECT | Hawke's Bay |
| Isoft Technologies Pvt Ltd | |
| ISoftware Ltd | Taranaki |
| iSystems Ltd | Hawke's Bay |
| IT Brief New Zealand | Auckland |
| IT Bureau | Auckland |
| IT Business Solutions Ltd | |
| iT Consultants NZ Ltd | Auckland |
| IT Dept Ltd | |
| IT Live Ltd | Auckland |
| IT Matrix Ltd | Bay of Plenty |
| IT Near U | |
| IT Sales & Service Ltd | Auckland |
| IT Service Management Forum | Canterbury |
| IT Works Ltd | |
| IT-Direct Ltd | Auckland |
| iT360 Ltd | |
| ITCO Solutions Ltd | |
| iTOPS Ltd | Canterbury |
| ITSS Online Information Center | Auckland |
| Izon Science Ltd | |
| Jag Creative | Auckland |
| Jake Clearwater | |
| JAM Solutions | |
| Janko Computers | Taranaki |
| Janter Electronics | Auckland |
| JAS Technologies | |
| Javln | Auckland |
| Jaycar | |
| Jaytech | Auckland |
| JB Hi-Fi | |
| JD-Data Ltd | |
| Jenlogix Ltd | Auckland |
| Jethro Carr | Wellington |
| Jewellers Computer Till | Canterbury |
| Joomla! New Zealand | Auckland |
| Journey Digital | Auckland |
| JoyTechGuy | Waikato |
| JRB Software Ltd | Canterbury |
| JTS Power Ltd | Auckland |
| JungleGym | Auckland |