| 10|20 Marketing | Dorval | Button Advertising |
| 1230 Électroniques | Lachine | Computer Repair & Cleaning |
| 123inkcartridges.ca | Lachine | Camera & Photo Equipment Stores |
| 1982 Transportation | Dorval | Car & Truck Transporting Companies |
| 24k Auto Inc | Dorval | Auto Body Shop |
| 9132-1000 Québec Inc | Lachine | Business & Trade Organizations |
| 9334-4349 Quebec Inc | Lachine | Pizza & Pizzerias |
| A Asselin & Fils Inc | Lachine | Plumbing |
| A P S Aviation Inc | Dorval | Aviation Consultants & Services |
| A Pex Discount Inc | Lachine | Bedding & Linens |
Publicité (Desktop) Publicité (Mobile) |
| A-1 Test de Pyrite/Vermiculite/Amiante/Environnemental/ | Longueuil | Analytical & Testing Laboratories, Asbestos Testing & Consultants |
| Aai Encanteurs Assoc Intl | Lachine | Auctions |
| AB auto | Dorval | Auto Body Shop |
| Abbott Laboratories Limited | Montréal | Tout Entreprises et services |
| Abrasicorp & Equipment | Dorval | Abrasives |
| Abrasive Technology N A Inc | Dorval | Abrasives, Tout Entreprises et services |
| Abu-Lasia/ Matamin | Lachine | Baked Goods Wholesalers |
| Accessoires Rose Blanche | Lachine | Bakery Equipment, Bakery Supplies |
| Accord Expositions | Lachine | Tout Entreprises et services |
| Accès pharma chez Walmart | Dorval | Pharmacy |
Publicité (Desktop) Publicité (Mobile) |
| Acier Lachine Inc | Lachine | Aluminum |
| Acier Vanguard Ltée | Dorval | Tout Entreprises et services |
| Action 500 | Dorval | Tout Arts et divertissement |
| ADI Global Distribution | Lachine | Tout Entreprises et services |
| ADM Canada | Lachine | Tout Entreprises et services |
| ADVANTECH INC. | Dorval | Aerospace |
| Aeroneuf Instruments Ltée | Dorval | Aerospace, Aircraft Parts, Engines & Avionics |
| AEROPORT DORVAL/MIRABEL | Dorval | Blue Pages |
| Aerospatiale Kaycee | Dorval | Aircraft Parts, Engines & Avionics |
| Affacturage Canada Inc. | Dorval | Tout Entreprises et services |
Publicité (Desktop) Publicité (Mobile) |
| Affiliated Sport Group | Lachine | Tout Entreprises et services |
| AGAT Laboratoires | Montréal | Analytical & Testing Laboratories |
| AGAT Laboratories | Montréal | Analytical & Testing Laboratories |
| Agat Laboratories | Montréal | Analytical & Testing Laboratories |
| Agence Imapro Inc | Lachine | Business & Trade Organizations |
| AIDA Distribution | Lachine | Beverage Distributors & Bottlers |
| Air Algerie | Dorval | Airline Ticket Agencies |
| Air Inuit (1985) Ltd | Dorval | Airlines |
| Air Inuit Ltd | Dorval | Airlines |
| Air Inuit Ltd | Dorval | Airlines |
Publicité (Desktop) Publicité (Mobile) |
| Air Inuit Ltée | Dorval | Airlines |
| Air Pro Transport 2009 | Lachine | Air Cargo Service |
| Air Saphir - Qualité d'air | Laval | Analytical & Testing Laboratories |
| Air-Ins Inc | Varennes | Analytical & Testing Laboratories |
| AIRCRAFT EQUIPMENT & SUPPORT SERVICES | Dorval | Aerospace |
| Airline Network Services | Dorval | Airlines |
| Airline Services International Inc | Dorval | Airlines |
| Airmax Environnement | Montréal | Analytical & Testing Laboratories |
| AIRNAV ELECTRONIC | Dorval | Aerospace |
| Airnav Électronique Ltée | Dorval | Tout Entreprises et services |
