| LYF Marketing | |
| Lynch Technologies, Inc. | Ontario |
| Lynk Marketing Solutions, Inc. | British Columbia |
| Lynx Graphics Ltd | Manitoba |
| Lynx IT | |
| Lynx Systems, Inc. | Ontario |
| Lynx Technical Solutions, Inc. | British Columbia |
| Lyryx Learning, Inc. | Alberta |
| M Core Technology | |
| M-PRO | Ontario |
| M-Tech Innovations, Inc. | |
| M. Carroll Consulting | |
| M.A.G. Intégration | Quebec |
| M.C. Microtech | Quebec |
| M.E. Smith Consulting | Nova Scotia |
| M.I.T. Consulting | Ontario |
| M.L. Steiner Communications, Inc. | Quebec |
| M.R. App Development Studio | Saskatchewan |
| M.R. Website Development Studio | Saskatchewan |
| M.R.C.Systems, Inc. | Ontario |
| M1 Composites Technology, Inc. | |
| M2C2 Communications | Quebec |
| M2M Tech | |
| M2S Électronique | Quebec |
| M3 Drone Training Zone | Manitoba |
| M3 Enterprises, Inc. | British Columbia |
| M3 Solutions | |
| M32 Connect | |
| M5 Games, Inc. | |
| m5 Marketing Communications | Newfoundland and Labrador |
| M5 Technologies | Quebec |
| M9 Corporation | Manitoba |
| m:ey | |
| M@ Technologies | |
| Maado | |
| Mabel Systems | Nova Scotia |
| Mac & PC Repair Depot | Ontario |
| Mac Mar | Ontario |
| Mac Outpost | Ontario |
| Mac Outpost St. Catharines | Ontario |
| Mac Solution | British Columbia |
| Mac Solutions | Ontario |
| Macadamian | Quebec |
| Macapa Software | Quebec |
| MaCarrièreTECHNO | Quebec |
| MacBook Repair Vancouver | |
| MACCK Digital Marketing | |
| MACE Technologies | |
| MacEast | Nova Scotia |
| MacEwan University | Alberta |