| Loom Analytics | |
| Loomo | |
| Loop | |
| Loop App Canada, Inc. | |
| LoopHad Technologies, Inc. | |
| Loopio, Inc. | Ontario |
| LoopX.AI | |
| Lopedia | Alberta |
| LopLop | Quebec |
| Loran | Quebec |
| Lorcantech | |
| Loris Technologies, Inc. | Ontario |
| Lorne Pike & Associates | Newfoundland and Labrador |
| Lorron Technologies, Inc. | Ontario |
| Loslier | Quebec |
| LotgusPC | Ontario |
| LottaClicks | Ontario |
| Lotus Marketing | Quebec |
| Loud Crow Interactive | British Columbia |
| Louise Street Marketing, Inc. | Ontario |
| Loulou Informatique | |
| Loup Technology & Solutions Ltd | |
| LOV Software, Inc. | |
| Lovett Ventures Ltd | British Columbia |
| Low Rates Telecom | Ontario |
| Lowbirth Games | |
| LOWD Media | Ontario |
| Loyalist College | Ontario |
| Loyalist Management Systems | Ontario |
| LoyalMark | Ontario |
| LP Computer & Phone Services | |
| LPC Computer Consulting, Inc. | British Columbia |
| LPK Technologies | Saskatchewan |
| LPRF | British Columbia |
| LQwD FinTech Corporation | |
| LRG Network | Ontario |
| LS2 | Quebec |
| LSCI, Inc. | Quebec |
| LSoft Technologies, Inc. | Ontario |
| LSZ PaperTech, Inc. | Ontario |
| LTI | Quebec |
| LTTng Project | Quebec |
| Lü | Quebec |
| Lu Web Design | Nova Scotia |
| Lubacom | Ontario |
| Lucar Informatique | Quebec |
| Lucas Production Arts | Ontario |
| Lucas Technology & Analytics | Nova Scotia |
| Lucid Communications | Ontario |
| Lucid Dreams Studio | |