| Info-Design Online | Queensland |
| Info-Onscreen | New South Wales |
| Infobiz Solutions | South Australia |
| Infocomm Software | |
| InfoConnect | Western Australia |
| InfoDEN | Queensland |
| Infoiconic | |
| Infomedia Ltd | New South Wales |
| InfoQweb Ltd | Western Australia |
| Informatech | |
| Informatel | Victoria |
| Information & Design | Victoria |
| Information Professionals | Queensland |
| Informatix Pty Ltd | Queensland |
| Infravision | |
| iNGENū CRO | |
| iNGENū CRO | |
| Inhalerx Ltd | |
| Ink Hub | South Australia |
| Ink Station | New South Wales |
| InkBank.com | Australian Capital Territory |
| Inkjet Toner Refills | Queensland |
| Inkwire | Australian Capital Territory |
| Inlight | |
| Innodev Pty Ltd | South Australia |
| Innospace Solutions Pty Ltd | |
| Innovation Industries Pty Ltd | |
| Innovation New South Wales | New South Wales |
| InnovationACT | Australian Capital Territory |
| InnovationAus.com Pty Ltd | |
| Innovative Computer Solutions (Aust) Pty Ltd | New South Wales |
| Innovent Business Solutions Pty Ltd | New South Wales |
| Innovte Digital | |
| Innovyz | South Australia |
| Innoweb Pty Ltd | New South Wales |
| iNNsite | |
| Inology Australia Pty Ltd | |
| InoTec | New South Wales |
| INOVIQ Ltd | Victoria |
| Inovor Technologies | |
| Inqbaytor | |
| Insane Technologies Pty Ltd | Queensland |
| Insider Media Group | |
| Insight IT | |
| Insitec | Australian Capital Territory |
| InSitu Tech Support | New South Wales |
| Inspectivity Pty Ltd | |
| Inspired IT Pty Ltd | |
| Institute of Creative Arts and Technology Pty Ltd | |
| Institute of Management | |