Directory
| Company | Industry | City |
| Ian Hannah Inc. | Toronto | |
| IBM Canada | Markham | |
| Illustration Magic Inc. | Mississauga | |
| Image Farm Inc | Toronto | |
| Imaginova Ltd | Toronto | |
| Imex Systems Inc. | Mississauga | |
| Impact Mobile Inc. | Toronto | |
| In Motion Digital Media | Ottawa | |
| INAGO | Toronto | |
| Inconverse Inc. | Aurora | |
| Independent Film Financing Inc. | ||
| Independent Learning Centre (ILC) | Toronto | |
| Industry Canada | Ottawa | |
| Infinite HD Inc. | Gormley | |
| Inline Internet Systems | Thorold | |
| Innovative Information Technologies International | Toronto | |
| InsightU | Newmarket | |
| InSync Video | Toronto | |
| Intelligent Creatures Inc. | Toronto | |
| Intellitactics Inc. | Cambridge | |
| Interactive Ontario Industry Association | Toronto | |
| Interactive Solutions New Media Inc. | Toronto | |
| Interad Media Design Corp. | Toronto | |
| interstrata | Mississauga | |
| Invert Media | Toronto | |
| InViVo Communications | Applications, Software | Toronto |
| iplaymedia.tv inc | Brampton | |
| iseemedia Inc. | Mobile | Concord |
| ISIS Digital Media Inc. | Burlington | |
| iStudio | Toronto |
