| JPC AVIATION | Montréal | Aerospace |
| JPL International | Dorval | Tout Entreprises et services |
| JSR2 AEROSPACE | Anjou | Aerospace |
| Kaycee Aerospace | Pierrefonds | Aircraft Parts, Engines & Avionics |
| KAYCOM INC. | Pointe-Claire | Aerospace |
| Kemex Strapping Systems Inc. | Dorval | Tout Entreprises et services |
| Kidd H A & Co Ltd | Dorval | Buttons |
| Klingon Imperial Diplomatic Corps | Dorval | Tout Arts et divertissement |
| Konsultec | Dorval | Air Conditioning Contractors |
| KSB Pumps | Dorval | Life Sciences and Health Technologies (LSHT) |
Publicité (Desktop) Publicité (Mobile) |
| L V Lomas Limited | Dorval | Chemicals |
| L-3 MAS | Mirabel | Aerospace, Tout Entreprises et services |
| La Girouette | Dorval | Beauty & Fitness, Hairdressers & Beauty Salons |
| La Girouette Coiffure et Spa | Dorval | Beauty & Fitness, Hairdressers & Beauty Salons |
| Laboratoires Medelys International inc. | Dorval | Life Sciences and Health Technologies (LSHT) |
| Lantheus MI Canada Inc. | Dorval | Life Sciences and Health Technologies (LSHT) |
| LAVOD (LES INDUSTRIES) INC. | Laval | Aerospace |
| Le Centre Café Gourmet | Dorval | Coffee Stores |
| Le Fitness Loft | Dorval | Fitness Gyms |
| Le Vieux Dorval | Dorval | Pizza & Pizzerias |
Publicité (Desktop) Publicité (Mobile) |
| Ledair Inc | Dorval | Airlines |
| LEESTA LTÉE (LES INDUSTRIES) | Pointe-Claire | Aerospace |
| LEGO PLATING | Saint-Léonard | Aerospace |
| LEMEX AVIATION INC. | Saint-Hubert | Aerospace |
| Les Couvertures PRS Roofing Inc. | Dorval | Tout Entreprises et services |
| Les Extrusions Sismo Inc. | Dorval | Tout Entreprises et services |
| Les Instruments chirurgicaux Impérial | Dorval | Life Sciences and Health Technologies (LSHT) |
| Les Jardins Dorval | Dorval | Tout Commerces au détail |
| Les Jardins Dorval | Dorval | Shopping Mall |
| Les Pros de l'impôt | Dorval | Tout Entreprises et services |
Publicité (Desktop) Publicité (Mobile) |
| Les Services Environnementaux Can-R... | Dorval | Tout Entreprises et services |
| Les Spécialistes Du Sport | Dorval | Physiotherapy |
| Les toits permanents du Québec Inc. | Dorval | Tout Entreprises et services |
| LIEBHERR AEROSPACE CANADA | Laval | Aerospace |
| Limousine Murray Hill Inc | Dorval | Chauffeur Services |
| LISI Aerospace | Dorval | Tout Entreprises et services |
| Lisi Aerospace Canada Corp | Dorval | Aviation Consultants & Services |
| LISI AEROSPACE CANADA CORPORATION | Dorval | Aerospace |
| List Transport Inc. | Dorval | Tout Entreprises et services |
| Location Brossard | Dorval | Tout Commerces au détail |
Publicité (Desktop) Publicité (Mobile) |
| LOCKHEED MARTIN CANADA | Montréal | Aerospace |
| LSI Canada Inc. | Dorval | Tout Entreprises et services |
| LSI LUMINESCENT SYSTEMS CANADA INC. (ASTRONICS) | Dorval | Aerospace |
| LTA Aérostructures | Montréal | Aerospace |
| Lufthansa Technik MES | Montréal | Aerospace |
| Lutek Équipement Plastique Inc. | Dorval | Tout Entreprises et services |
| Lyskaam Coatings Inc | Dorval | Painters |
| Léon | Dorval | Furniture Stores |
| M.R. Continent Globe Corporation | Dorval | Life Sciences and Health Technologies (LSHT) |
| MACHINE TEK INC. | Sainte-Julie | Aerospace |
