| Hurona Technologies | Ontario |
| Hushmail | British Columbia |
| Husky Technologies | Quebec |
| Hutsy Financial Corporation | |
| Hy-Tek Computer Sales and Service Ltd | Alberta |
| HYAS Infosec, Inc. | British Columbia |
| Hybdrid Forge | Alberta |
| Hybdride | Quebec |
| Hybrid Document Systems, Inc. | |
| Hybrid Optics Innovations, Inc. | Quebec |
| HyC Light, Inc. | |
| Hyden House | |
| Hydepark Computers | Ontario |
| HydraLab | Quebec |
| Hydre D'Or Communications | Quebec |
| Hydrid Creative | Ontario |
| Hydro Kars, Inc. | |
| Hydro One Networks, Inc. | |
| Hydro One Telecom, Inc. | Ontario |
| Hydro-Québec | Quebec |
| Hydrogène Québec | Quebec |
| Hydrostor | |
| Hypenotic | Ontario |
| Hyper | Quebec |
| Hyperactive | Ontario |
| Hyperbolic Systems | Ontario |
| HyperBoreas, Inc. | Quebec |
| Hypercare, Inc. | |
| Hyperion Group, Inc. | |
| Hyperlight Systems | |
| Hyperlink | |
| HyperMedia Group | British Columbia |
| HyperNET | Ontario |
| Hypersecu Information Systems, Inc. | |
| HyperShell | Quebec |
| Hypertec Systems, Inc. | Quebec |
| Hypertronic Technologies | Quebec |
| HyperVantageMarketing | Saskatchewan |
| Hyperweb | Ontario |
| Hypha Worker Co-operative, Inc. | |
| Hyphen | |
| Hyre | |
| I Can Infotech | |
| I Conversion | Quebec |
| I Know SEO | Ontario |
| I Want Wireless.ca Ltd | Alberta |
| I Web Guy | Alberta |
| I'm Write | |
| i-Lanam Technologies, Inc. | |
| i-Open Technologies, Inc. | British Columbia |