| Company | Industry | City |
| Hamilton Film & Television Office | Social, Cultural and Arts | Hamilton |
| Harlequin Enterprises Limited | Don Mills | |
| Haven Knowledge Systems Inc. | Toronto | |
| Heart & Soul Media | Brampton | |
| Heroic Interactive Inc. | Toronto | |
| Hewlett Packard | Mississauga | |
| Hi Profile | Toronto | |
| High Road Communications | Toronto | |
| Hilary Krupa Communications | ||
| Hip Pocket Mobile Inc. | Toronto | |
| Historica Foundation of Canada | Toronto | |
| HomeDVD | Kanata | |
| Honey Design Marketing & Communications | London | |
| Hop To It Productions | Toronto | |
| Humansense.com Inc. | E-learning and Education | Toronto |
| Humber College Institute of Technology and Advance | Toronto | |
| Hummel Entertainment | Music Recording | Toronto |
| Hunox | Nepean | |
| HyperActive.ca | Ottawa |