| Mister Social | |
| Mister Webguy | |
| Mistic Software, Inc. | Quebec |
| Mistral Data Systems, Inc. | Ontario |
| Mistral Venture Partners | Ontario |
| MistyWest | |
| miSys, Inc. | Quebec |
| MIT 4 RISK AML Software and Solutions, Inc. | |
| Mitacs | British Columbia |
| Mitel Networks Corporation | Ontario |
| Mitis en Affaires | |
| MitraTechSolution | |
| Mitravel | |
| Mitre Software Corporation | Alberta |
| MitreMedia Corporation | |
| Mixtio Marketing | |
| Mixxmedia | Ontario |
| MJ Marketing | |
| MJA - Impressions | British Columbia |
| MJH Training | Saskatchewan |
| MJS, Inc. | |
| MK Software, Inc. | Ontario |
| MKN Systems, Inc. | Quebec |
| MKT Communications | |
| MLD Solutions, Inc. | Ontario |
| MLDB.ai, Inc. | |
| MLG Blockchain | |
| MLI Technologies Canada Ltd | |
| MMB Networks | Ontario |
| MMIST, Inc. | |
| Mmnox Enterprise, Inc. | |
| Mmode | |
| MNI System | |
| MNP Digital | |
| MNSi | Ontario |
| Mo the IT guy | Ontario |
| Mobcoder | |
| Mobeewave | Quebec |
| Mobetize | British Columbia |
| Mobi724 | |
| MOBIA Technology Innovations | Nova Scotia |
| Mobian Support | |
| Mobile Business Communications Ltd | Ontario |
| Mobile Computer Service Outlet | Ontario |
| Mobile Computer Solutions | Saskatchewan |
| Mobile Data Solutions, Inc. | |
| Mobile GPS Online | Ontario |
| Mobile Klinik | |
| Mobile Knowledge | Ontario |
| Mobile Local Consulting | Ontario |