| HSQUARE Technologies | |
| HT Consulting | Ontario |
| HT Designs, Inc. | Ontario |
| HTML Basic Tutor | British Columbia |
| HTSoftwares | Quebec |
| HTTP-Tunnel | Quebec |
| HTuO Biosciences, Inc. | |
| Huawei Technologies Canada Co., Ltd | Ontario |
| HUB Montréal | Quebec |
| Hub numérique | |
| HUB Technology Solutions | Manitoba |
| HubbubHR | |
| Hubdoc | Ontario |
| Hubio | |
| Hubly, Inc. | |
| hubTGI | |
| Hudson Technology | Ontario |
| Hugh Tompson's Digital Home | Ontario |
| Hulix Conseil, Inc. | Quebec |
| Human After All | Quebec |
| Human Brand Communications Group | |
| Human in Motion Robotics | |
| Human Media Lab | Ontario |
| Human Resource Systems Group | Ontario |
| Human Resources Technologies, Inc. | Ontario |
| HumanFirst | |
| HumanIA | Quebec |
| HumanIT | Quebec |
| HumanSystems, Inc. | Ontario |
| HumanTalents | |
| Humanware | Quebec |
| Human_Code | |
| Humasys | Ontario |
| Humber College | |
| Humber College - Computer Engineering Technology | Ontario |
| Humber Software Services, Inc. | Ontario |
| Humi | Ontario |
| Hummingbird Drones | British Columbia |
| Humonix | |
| Humphrey's Vintage Audio & TV Repair | Ontario |
| Hunch Manifest, Inc. | Ontario |
| Hunchly | |
| Hunter Communications, Inc. | Alberta |
| Hunter Technology Corporation | |
| Huntington University | |
| Huntsman Marine Science Centre | |
| Hurdler Studios, Inc. | |
| Huron Digital Pathology | Ontario |
| Huron Telecommunications Co-operative Ltd | Ontario |
| Huron University | Ontario |