| 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 |
| 9517-7028 Quebec Inc | Greenfield Park | Pizza & Pizzerias |
| A AS | Park | as |
| A Asselin & Fils Inc | Lachine | Plumbing |
| A Pex Discount Inc | Lachine | Bedding & Linens |
| Aai Encanteurs Assoc Intl | Lachine | Auctions |
| Absolue Coiffure | Greenfield Park | Barbers, Beauty & Fitness, Men's Hairdressers & Barber Shops |
Publicité (Desktop) Publicité (Mobile) |
| Abu-Lasia/ Matamin | Lachine | Baked Goods Wholesalers |
| Accessoires Rose Blanche | Lachine | Bakery Equipment, Bakery Supplies |
| Accord Expositions | Lachine | Tout Entreprises et services |
| 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 |
| Agence Artistique Thomas Graton | Greenfield Park | Artists |
| Agence Imapro Inc | Lachine | Business & Trade Organizations |
| AIDA Distribution | Lachine | Beverage Distributors & Bottlers |
Publicité (Desktop) Publicité (Mobile) |
| Air Pro Transport 2009 | Lachine | Air Cargo Service |
| Alain Normandin Rénovation | Lachine | Home Improvement |
| 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 |
| Alvarez Rafaela C | Greenfield Park | Bookkeeping |
| 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 |
Publicité (Desktop) Publicité (Mobile) |
| Andrew & Friends - 90 Day Challenge | Lachine | Beauty Salon Equipment & Supplies |
| Anixia | Lachine | Calendars |
| Annie Cyr Conseillère Indépendante Scentsy | Lachine | Aromatherapy |
| Après-Coup | Greenfield Park | Associations |
| AQPEHV | Greenfield Park | Tout Communautés et société |
| Aqua-Jet | Greenfield Park | Chemical & Pressure Cleaning Systems |
| Aquarium Arc En Ciel | Greenfield Park | Aquariums & Supplies |
| Aquaxpert Inc | Greenfield Park | Air Conditioning Contractors |
| Archi-Art Design | Greenfield Park | Painters |
| ARCHIVES IRON MOUNTAIN | Lachine | Information Technologies (IT) |
Publicité (Desktop) Publicité (Mobile) |
| Arena Pizzeria | Lachine | Pizza & Pizzerias |
| Arena Tasty Pizzeria Lachine Restaurant | Lachine | Pizza & Pizzerias |
| Armoires De Cuisine Et Comptoirs Lasalle | Greenfield Park | Beds |
| Arrondissement de Lachine | Montréal | Tout Informations générales |
| Arrondissement de Lachine | Lachine | Not Profit, library |
| Art Forge | Lachine | Art Foundries |
| Artisanat des Cèdres | Greenfield Park | Candles |
| Ashley's Little Gift Shop | Lachine | Candles |
| Association Afaq | Greenfield Park | Associations |
| Association des Cadres Superieurs | Greenfield Park | Associations |
