| Hamak | Quebec |
| Hamel Formation | Quebec |
| HamerData | Ontario |
| Hamilton Health Sciences | |
| Hammer Software | |
| Hammerhead. Vancouver Web Design & Development | |
| Hampshire Hosting | Prince Edward Island |
| Hampson Custom Software | Ontario |
| Hampton Designs | |
| Hananet Digital Security | Nova Scotia |
| Hanatech IoT, Inc. | Nova Scotia |
| Hanco Technologies, Inc. | Ontario |
| Hands On Technology Transfer Canada Corporation | Ontario |
| Handshake Aide aux entreprises S.E.N.C. | Quebec |
| Handy.ai | |
| Hangar 18 Creative Group, Inc. | British Columbia |
| Hangry Solutions, Inc. | Ontario |
| Hanover Consulting | Ontario |
| Hans Deragon | Quebec |
| Hansen Software | British Columbia |
| HanSonic North America, Inc. | British Columbia |
| Hantolai Computer Consultants | Ontario |
| Hanzon Computers | British Columbia |
| Happ Social, Inc. | |
| Happier IT, Inc. | British Columbia |
| Happipad | |
| Happy Horns | Quebec |
| HappyAccounts | British Columbia |
| Harbor Sourcing | |
| Harbour Digital Media | British Columbia |
| Harbour Technologies Ltd | |
| Harbr | Nova Scotia |
| Hard Drive Cafe | Nova Scotia |
| Hardbacon | |
| Hardent | Quebec |
| Harding Instruments | Alberta |
| HardSoft Systems Ltd | Ontario |
| Hardware Strategies | Ontario |
| Hardwire Telecom Ltd | British Columbia |
| Hardy Services Conseils | Quebec |
| Haricot.ca | |
| Harmonic Design | Ontario |
| Harper Media | |
| HarpLabs, Inc. | |
| Harrington Consulting Group | Ontario |
| Harris | Ontario |
| Harris Education Solutions | Ontario |
| Harrisson Informatique | Quebec |
| HarrisWeb Creative | Ontario |
| Harsoft Solutions | |