| 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 |
| Aai Encanteurs Assoc Intl | Lachine | Auctions |
| ABC Distribution | Montréal | Tout Entreprises et services |
| Abu-Lasia/ Matamin | Lachine | Baked Goods Wholesalers |
| Académie Aéronautique Inc | Mascouche | Aircraft & Flight Schools |
Publicité (Desktop) Publicité (Mobile) |
| Accessoires Rose Blanche | Lachine | Bakery Equipment, Bakery Supplies |
| Accord Expositions | Lachine | Tout Entreprises et services |
| Accueil Bonneau | Montréal | Tout Communautés et société |
| Acier Lachine Inc | Lachine | Aluminum |
| ADI Global Distribution | Lachine | Tout Entreprises et services |
| ADM Canada | Lachine | Tout Entreprises et services |
| Affiliated Sport Group | Lachine | Tout Entreprises et services |
| AG Distribution | Montréal | Auto Body Shop |
| Agence Imapro Inc | Lachine | Business & Trade Organizations |
| Agences De Distribution Bijanard Ltée | Montréal | Building Material Manufacturers & Wholesalers |
Publicité (Desktop) Publicité (Mobile) |
| Agro Énergie | Mascouche | Tout Entreprises et services |
| AIDA Distribution | Lachine | Beverage Distributors & Bottlers |
| Air Pro Transport 2009 | Lachine | Air Cargo Service |
| Airline Revenue Management Training Group | Montréal | Airlines |
| Alain Normandin Rénovation | Lachine | Home Improvement |
| Albi Le Géant | Mascouche | Tout Commerces au détail |
| Albi Mazda | Mascouche | Tout Commerces au détail |
| Alex Média Services Inc | Montréal | Circular & Sample Distribution |
| Aliments Morehouse Canada Inc | Lachine | Agri-food |
| Aliments T & N (Les) | Lachine | Agri-food |
Publicité (Desktop) Publicité (Mobile) |
| Allstream | Lachine | Information Technologies (IT), Tout Entreprises et services, Tout Informatique et internet |
| Alltech Distribution Inc | Saint-Michel | Tout Commerces au détail |
| Alltech Distributions | Montréal | Alternators & Starters |
| Alongi | Lachine | Tout Commerces au détail, Tout Entreprises et services |
| Always B Clean | Lachine | Home Improvement |
| AMD Ritmed Inc. | Québec | Life Sciences and Health Technologies (LSHT) |
| Ameta Solution Inc. | Mascouche | Tout Entreprises et services |
| AMJ Campbell Van Lines | Lachine | Tout Entreprises et services |
| Ampak Distribution Inc | Montréal | Bottles & Jars |
| Andino Distribution Inc. | Montréal | Audiovisual Equipment & Supplies |
Publicité (Desktop) Publicité (Mobile) |
| Andrew & Friends - 90 Day Challenge | Lachine | Beauty Salon Equipment & Supplies |
| Animation BCBG | Mascouche | Tout Entreprises et services |
| Anixia | Lachine | Calendars |
| Annie Cyr Conseillère Indépendante Scentsy | Lachine | Aromatherapy |
| ARCHIVES IRON MOUNTAIN | Lachine | Information Technologies (IT) |
| Arena Pizzeria | Lachine | Pizza & Pizzerias |
| Arena Tasty Pizzeria Lachine Restaurant | Lachine | Pizza & Pizzerias |
| Armoires Dickinson Inc | Mascouche | Kitchen Cabinets |
| Arrondissement de Lachine | Montréal | Tout Informations générales |
| Arrondissement de Lachine | Lachine | Not Profit, library |
