| Logicware | Quebec |
| Logidale | |
| Logient | Quebec |
| Logiffect Business Solutions | Quebec |
| Logific, Inc. | Ontario |
| Logiforms | British Columbia |
| Logika Technologies | |
| Logikal Code | Ontario |
| Logilia | Quebec |
| Logilys | Quebec |
| Logimax Service Informatique | Quebec |
| Logimethods | Quebec |
| Loginet Solutions | Quebec |
| Loginet Solutions, Inc. | |
| Loginove | Quebec |
| LoginRadius | Alberta |
| LoginTI | Ontario |
| LogiQual, Inc. | Quebec |
| Logis | Quebec |
| Logistica systems web design & development | British Columbia |
| Logistics Software Corporation | Ontario |
| Logiteck informatique | Quebec |
| Logiware | British Columbia |
| Logix Data Products, Inc. | Ontario |
| Logixx Security, Inc. | |
| Lognet | Quebec |
| Logo Computer Systems, Inc. | Quebec |
| LOGO.com | |
| Logobee | Quebec |
| Logofury | |
| Logoman | Ontario |
| LOK North America | |
| Loki Pro, Inc. | |
| Loma Software | |
| London Business Machines, Inc. | Ontario |
| London Health Sciences Centre | |
| London High Technology Association | Ontario |
| London Web Marketing | Ontario |
| London Webmasters | Ontario |
| Lone Wolf Technologies | Ontario |
| Long View Systems | Alberta |
| Longbow Advantage, Inc. | Quebec |
| Longbow Capital, Inc. | |
| Longbow Digital Arts | Ontario |
| Longevity Graphics | British Columbia |
| Longhouse Branding & Marketing | |
| Longhurst Consulting | Alberta |
| Longtech.ca | Ontario |
| Lontech Software Systems, Inc. | |
| Looka, Inc. | |