| Health Profiler | British Columbia |
| HealthEMe | |
| HealthTech Connex, Inc. | |
| HealthTech, Inc. | Ontario |
| Healtquest | |
| Heaventools Software | British Columbia |
| HeavyLifters Network Ltd | British Columbia |
| Hébergement ADN | |
| Hébergement Canada | Quebec |
| Hébergement Saglac | Quebec |
| Hébergement Web Canada | Quebec |
| Hébergement-Web-Québec.com | Quebec |
| HEC Montréal | Quebec |
| HEC Montréal - La base entrepreneuriale | |
| HECOD Blockchain, Inc. | |
| Hector | |
| Hedgehog Technologies | |
| Hedgerow Software Ltd | |
| Hedgewood, Inc. | |
| Hedhofis | |
| Heerbod Corporation | Ontario |
| Heiplex, Inc. | |
| Heitech Software Solutions | |
| Hekka Design Multimédia | Quebec |
| Hektic Media | Ontario |
| Helcim, Inc. | Alberta |
| Helen K. Web Design Studio | British Columbia |
| Helika | |
| Heliom, Inc. | |
| Helios Design Labs | Ontario |
| Helios Global Technologies | |
| Helios Technology Solutions, Inc. | |
| Helios UAV | Quebec |
| Helix Biopharma | |
| Hellbent Games | British Columbia |
| Hellmedia | |
| Hello Design Studio | Ontario |
| Hello Digital Marketing Ltd | Manitoba |
| Hello Media, Inc. | Ontario |
| Hello Websites | |
| Helm | |
| Helmer Dávila | |
| Help Wanted App | |
| HelpOX | Quebec |
| HelpSmith | British Columbia |
| Helptek Technology Sales & Services | |
| Helpwear Tech | Ontario |
| Hemmingford Aerospace, Inc. | |
| Hemostemix, Inc. | |
| Henstra Business Solutions, Inc. | Ontario |