| Les Industries Leesta Ltée | Pointe-Claire | Tout Entreprises et services |
| Les Productions Wild Box | Montréal | Aerial Photographers |
| Les Systèmes Accessair Inc. | Sainte-Catherine | Tout Entreprises et services |
| LIEBHERR AEROSPACE CANADA | Laval | Aerospace |
| LISI Aerospace | Dorval | Tout Entreprises et services |
| Lisi Aerospace Canada Corp | Dorval | Aviation Consultants & Services |
| LISI AEROSPACE CANADA CORPORATION | Dorval | Aerospace |
| LOCKHEED MARTIN CANADA | Montréal | Aerospace |
| Lockheed Martin Canada Inc. | Montréal | Tout Entreprises et services |
| LSI Canada Inc. | Dorval | Tout Entreprises et services |
Publicité (Desktop) Publicité (Mobile) |
| LSI LUMINESCENT SYSTEMS CANADA INC. (ASTRONICS) | Dorval | Aerospace |
| LTA Aérostructures | Montréal | Aerospace |
| Lufthansa Technik MES | Montréal | Aerospace |
| MACHINE TEK INC. | Sainte-Julie | Aerospace |
| MAETTA SCIENCE | Boucherville | Aerospace |
| MAGCHEM INC. | Boucherville | Aerospace |
| MANNARINO SYSTÈMES ET LOGICIELS | Montréal | Aerospace |
| MANX MANUFACTURIERS INC. | Lachenaie | Aerospace |
| MARINVENT CORPORATION | Saint-Bruno | Aerospace |
| MARQUEZ TRANSTECH LTÉE | Montréal | Aerospace |
Publicité (Desktop) Publicité (Mobile) |
| MAX TECHNOLOGIES | Brossard | Aerospace |
| MDA Corporation | Sainte-Anne-De-Bellevue | Tout Entreprises et services |
| MDA SPACE INC. | Sainte-Anne-De-Bellevue | Aerospace |
| MDS AERO SUPPORT CORPORATION | Montréal | Aerospace |
| Mecachrome Canada Inc | Julien-Audette | Aerospace |
| MECACHROME TECHNOLOGIES INC. | Montréal | Aerospace |
| MECAER AMÉRICA INC. | Laval | Aerospace |
| MECANICA SOLUTIONS INC. | Montréal | Aerospace |
| MECHTRONIX SYSTEMS INC. | Montréal | Aerospace |
| Mercuri Cuisine | Montréal | Tout Entreprises et services |
Publicité (Desktop) Publicité (Mobile) |
| METCOR INC. | Saint-Eustache | Aerospace |
| MEYER CANADA INC. | Boucherville | Aerospace |
| MG LONIC INC. | Dorval | Aerospace |
| MHD Rockland | Sainte-Anne-De-Bellevue | Tout Entreprises et services |
| MICRON INC. (LES PRODUITS AUTOMATIQUES) | Laval | Aerospace |
| MINDREADY SOLUTIONS INC. | Montréal | Aerospace |
| Minicut International Inc. | Anjou | Aerospace, Tout Entreprises et services |
| MIRABEL AÉRO-SERVICE INC. | Mirabel | Aerospace |
| Mitchell Aerospace Inc | Montréal | Aircraft Maintenance, Service & Storage |
| MITCHELL AEROSPACE INC. | Montréal | Aerospace |
Publicité (Desktop) Publicité (Mobile) |
| MITEC TÉLÉCOM INC. | Pointe-Claire | Aerospace |
| Mitsubishi Aircraft Corporation | Tourelles | Aerospace |
| ML Aesthetic Clinic | Montréal | Health and Beauty |
| Moncar Précision Inc. | Sainte-Rose | Aerospace, Tout Entreprises et services |
| Montreal Pierre Elliott Trudeau Air... | Montréal | Tout Entreprises et services, Tout Informations générales, Tout Tourisme et hôtels |
| MSB DESIGN | Boucherville | Aerospace |
| MSB Design | Montréal | Aerospace |
| MTLS Aerostructure | Montréal | Clean Technologies |
| Nav-Aids Ltée/Ltd. | Montréal | Tout Entreprises et services |
| NDT TECHNOLOGIES INC. | Baie D'urfé | Aerospace |
