| Hockeystick, Inc. | |
| HockeyTech, Inc. | |
| Hocoos | |
| HoduSoft | |
| Hola Media | British Columbia |
| Holbrook Goodman Technologies | Ontario |
| Holland College | Prince Edward Island |
| Hollo Medical, Inc. | |
| HolmPage Productions | Nova Scotia |
| Hololabs | |
| Hololabs Studio, Inc. | British Columbia |
| Holonics | Ontario |
| Holowick Scanning Systems, Inc. | Manitoba |
| Holt Xchange | |
| Home & Business Solutions | |
| Home Alone Software | Alberta |
| Home and Small Business Computer Services, Inc. | Ontario |
| Home Control Canada, Inc. | Ontario |
| Home Electronics | Ontario |
| Home Innovation Distributors Canada | Alberta |
| Homeboy Software, Inc. | |
| Homefield | |
| Homeric Technologies | |
| Honest Agency | |
| Honeycomb Creative Solutions | British Columbia |
| Honeypot Marketing | Ontario |
| Honk Mobile, Inc. | |
| Honor Computer Systems Ltd | Alberta |
| Hookdeck, Inc. | |
| Hookt Studios | Quebec |
| Hooplah, Inc. | Ontario |
| HootSuite Media, Inc. | British Columbia |
| Hop In Technology, Inc. | |
| Hop Studios | British Columbia |
| Hop Technologies | |
| Hop-Art | |
| Hopatoo Innovation Group Ltd | |
| HopCreative | Nova Scotia |
| Hopem | Quebec |
| Hoppin' World | |
| HoppyCopy | |
| Horahia | |
| Horizn | Ontario |
| Horizon Blockchain Games, Inc. | |
| Horizon Computer Solutions, Inc. | Saskatchewan |
| Horizon Computing | Ontario |
| Horizon DataSys | British Columbia |
| Horizon Networks Group | Ontario |
| Horizon Recruitment | British Columbia |
| Horizon Reports | |