| 1230 Électroniques | Lachine | Computer Repair & Cleaning |
| 123inkcartridges.ca | Lachine | Camera & Photo Equipment Stores |
| 9132-1000 Québec Inc | Lachine | Business & Trade Organizations |
| 9334-4349 Quebec Inc | Lachine | Pizza & Pizzerias |
| 9356-0175 Québec Inc | Mirabel | Architectural & Construction Specifications |
| A Asselin & Fils Inc | Lachine | Plumbing |
| A Pex Discount Inc | Lachine | Bedding & Linens |
| Aai Encanteurs Assoc Intl | Lachine | Auctions |
| AB Renovation | Mirabel | Cement Finishing |
| Abu-Lasia/ Matamin | Lachine | Baked Goods Wholesalers |
Publicité (Desktop) Publicité (Mobile) |
| Accessoires Rose Blanche | Lachine | Bakery Equipment, Bakery Supplies |
| Accord Expositions | Lachine | Tout Entreprises et services |
| Ace Tuning | Mirabel | Car Customizing & Accessories |
| Acier Lachine Inc | Lachine | Aluminum |
| ADI Global Distribution | Lachine | Tout Entreprises et services |
| ADM Canada | Lachine | Tout Entreprises et services |
| Adrien Yves Lighting Design | Montréal | Boutiques |
| AEROPORT DORVAL/MIRABEL | Dorval | Blue Pages |
| AEROPORT MIRABEL | Mirabel | Blue Pages |
| Affiliated Sport Group | Lachine | Tout Entreprises et services |
Publicité (Desktop) Publicité (Mobile) |
| Agence Imapro Inc | Lachine | Business & Trade Organizations |
| Agence Parcs Canada | Montréal | Not Profit, library |
| Agence Sylvain Charron Inc | Mirabel | Furniture Stores |
| Ahuntsic Cartierville Culture Sports Récreation Libraries Ahuntsic | Montréal | Not Profit, library |
| AIDA Distribution | Lachine | Beverage Distributors & Bottlers |
| Air Pro Transport 2009 | Lachine | Air Cargo Service |
| Air St Laurent | Mirabel | Aircraft & Flight Schools |
| Alain Normandin Rénovation | Lachine | Home Improvement |
| Alain-Grandbois Bibliotheques | Laval | Not Profit, library |
| Aliments Morehouse Canada Inc | Lachine | Agri-food |
Publicité (Desktop) Publicité (Mobile) |
| Aliments T & N (Les) | Lachine | Agri-food |
| Alkalima Christian Store | Montréal | Not Profit, library |
| Allstream | Lachine | Information Technologies (IT), Tout Entreprises et services, Tout Informatique et internet |
| Alongi | Lachine | Tout Commerces au détail, Tout Entreprises et services |
| Altus Formulation | Mirabel | Life Sciences and Health Technologies (LSHT) |
| Always B Clean | Lachine | Home Improvement |
| AMD Ritmed Inc. | Québec | Life Sciences and Health Technologies (LSHT) |
| AMJ Campbell Van Lines | Lachine | Tout Entreprises et services |
| Aménagement Paysager Mirabel | Mirabel | Landscaping |
| Andrew & Friends - 90 Day Challenge | Lachine | Beauty Salon Equipment & Supplies |
Publicité (Desktop) Publicité (Mobile) |
| Anixia | Lachine | Calendars |
| Annie Cyr Conseillère Indépendante Scentsy | Lachine | Aromatherapy |
| AQUACOUPE TECHNOLOGY INC. | Mirabel | Aerospace |
| Arbo Santé - Abattage d'arbre - Élagueur Mirabel | Mirabel | Landscaping |
| Arboplus | Mirabel | Tout Entreprises et services |
| Arbrobec Parts Canada Ltd. | Mirabel | Tout Entreprises et services |
| ARCHIVES IRON MOUNTAIN | Lachine | Information Technologies (IT) |
| Archives municipales | Montréal | Not Profit, library |
| Arena Pizzeria | Lachine | Pizza & Pizzerias |
| Arena Tasty Pizzeria Lachine Restaurant | Lachine | Pizza & Pizzerias |
