| 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 |
| A Asselin & Fils Inc | Lachine | Plumbing |
| A Pex Discount Inc | Lachine | Bedding & Linens |
| A.P. PACIFIC Nettoyage de Tapis | Laval | Cleaners (Buildings & Carpets), Home Decoration & Maintenance |
| Aai Encanteurs Assoc Intl | Lachine | Auctions |
| Abu-Lasia/ Matamin | Lachine | Baked Goods Wholesalers |
| Académie internationale de droit et de santé mentale | Québec | International Organizations |
Publicité (Desktop) Publicité (Mobile) |
| Accessoires Rose Blanche | Lachine | Bakery Equipment, Bakery Supplies |
| Accord Expositions | Lachine | Tout Entreprises et services |
| Acier Lachine Inc | Lachine | Aluminum |
| Ad-Am Drummond Building Inc | Montréal | Cleaning Services, Cleaning Service |
| ADI Global Distribution | Lachine | Tout Entreprises et services |
| ADM Canada | Lachine | Tout Entreprises et services |
| Adonis Construction Et Démolition | Montréal | Building Contractors |
| Adèle House Cleaning | Montréal | Cleaning Services, Cleaning Service |
| Affiliated Sport Group | Lachine | Tout Entreprises et services |
| Agence Amical Demenagement | Montréal | Building & House Movers |
Publicité (Desktop) Publicité (Mobile) |
| Agence Imapro Inc | Lachine | Business & Trade Organizations |
| Agences De Distribution Bijanard Ltée | Montréal | Building Material Manufacturers & Wholesalers |
| AIDA Distribution | Lachine | Beverage Distributors & Bottlers |
| Air Pro Transport 2009 | Lachine | Air Cargo Service |
| Alain Normandin Rénovation | Lachine | Home Improvement |
| Aleco | Saint-Léonard | Building Contractors |
| Aliments Morehouse Canada Inc | Lachine | Agri-food |
| Aliments T & N (Les) | Lachine | Agri-food |
| Allstream | Lachine | Information Technologies (IT), Tout Entreprises et services, Tout Informatique et internet |
| Alongi | Lachine | Tout Commerces au détail, Tout Entreprises et services |
Publicité (Desktop) Publicité (Mobile) |
| Altapex Construction | Montréal | Building Contractors |
| Aluminium J P M Inc | Montréal | Building Contractors |
| 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 |
| AMS Design Inc | Mont St Grégoire | Building Repair & Restoration |
| Anber Movers | Côte-Des-Neiges | Tout Entreprises et services |
| Anber Movers | Montréal | Moving Companies |
| Andre Poulin | Longueuil | Building Contractors |
| Andrew & Friends - 90 Day Challenge | Lachine | Beauty Salon Equipment & Supplies |
Publicité (Desktop) Publicité (Mobile) |
| Anglo-Canadian Houseware LP | Montréal | Appliance Manufacturers & Wholesalers |
| Anixia | Lachine | Calendars |
| Annie Cyr Conseillère Indépendante Scentsy | Lachine | Aromatherapy |
| Antiquites Coach House Enr | Westmount | Antique Dealers |
| Anvil International Canada | Montréal | Building Contractors |
| APCHQ Montréal Métropolitain | Montréal | Building Contractors |
| APL Construction | Boucherville | Building Contractors |
| ARCHIVES IRON MOUNTAIN | Lachine | Information Technologies (IT) |
| Arena Pizzeria | Lachine | Pizza & Pizzerias |
| Arena Tasty Pizzeria Lachine Restaurant | Lachine | Pizza & Pizzerias |
