| Andrew & Friends - 90 Day Challenge | Lachine | Beauty Salon Equipment & Supplies |
| Anixia | Lachine | Calendars |
| Annie Cyr Conseillère Indépendante Scentsy | Lachine | Aromatherapy |
| Aptilon | Montréal | Business & Trade Organizations |
| Aquatech BM | Boucherville | Business & Trade Organizations |
| Arboreta Internet Services | Longueuil | Business Centres |
| ARCHIVES IRON MOUNTAIN | Lachine | Information Technologies (IT) |
| Archivex | Montréal | Business Centres |
| Arena Pizzeria | Lachine | Pizza & Pizzerias |
| Arena Tasty Pizzeria Lachine Restaurant | Lachine | Pizza & Pizzerias |
Publicité (Desktop) Publicité (Mobile) |
| Aresx | Saint-Bruno | Business Brokers |
| Arishma D. Gokhool Attorney | Toronto | Business Lawyers |
| Arrondissement de Lachine | Montréal | Tout Informations générales |
| Arrondissement de Lachine | Lachine | Not Profit, library |
| Art Forge | Lachine | Art Foundries |
| Arthur Malouin Ltée | Saint-Césaire | Business Insurance |
| ASC Nova | Montréal | Circular & Sample Distribution |
| Ashley's Little Gift Shop | Lachine | Candles |
| Assetco Recovery Services Inc | Mont-Royal | Business Valuation |
| Association des Techniciens en Sant... | Lachine | Tout Entreprises et services |
Publicité (Desktop) Publicité (Mobile) |
| Assurance Pierre & Baguidy | Montréal | Business Insurance |
| Assurance vie Primerica services financiers | Saint-Léonard | Business Insurance |
| Assurance123.ca | Lachine | Tout Entreprises et services |
| Assurances Laurino & Gutta Inc | Montréal | Business Insurance |
| Assurances Provencher Verreault | Brossard | Business Insurance |
| Assurancia Guertin & Cie | Saint-Basile-Le-Grand | Business Insurance |
| Assurexperts Boisselle Et Associés | Varennes | Business Insurance |
| Assurexperts Desgroseilliers inc | Saint-Hubert | Business Insurance |
| ATCO Distributions | Laval | Compressors |
| Atex Inc | Montréal | Business Forms & Systems |
Publicité (Desktop) Publicité (Mobile) |
| Atome Distributeur Inc | Brossard | Business Forms & Systems |
| Aubé Avocats | Saint-Constant | Business Lawyers |
| Aurora Importation & Distribution I... | Anjou | Tout Entreprises et services |
| Aurora Importation et distribution | Montréal | Agri-food |
| Auto Camping | Lachine | Auto Part Manufacturers & Wholesalers |
| Auto Kool | Lachine | Auto Part Manufacturers & Wholesalers |
| Auto Shaltas Garage Inc | Lachine | Auto Body Shop |
| Autobus Montroyal Inc | Lachine | Chauffeur Services |
| Automaticash | Lachine | Automated Teller Manufacturers & Wholesalers |
| Automont Distributions Inc | Longueuil | Auto Part Manufacturers & Wholesalers |
Publicité (Desktop) Publicité (Mobile) |
| Autos Internationales Lachine | Lachine | Tout Commerces au détail |
| Avalon Partners | Pointe-Claire | Business Brokers |
| Avenant SST Inc | Lachine | Health Services |
| Avocatpenda.ca | Montréal | Business Lawyers |
| Avocats Lauzon | Montréal | Business Lawyers |
| Azurverde | Verdun | Business Centres |
| Aéro-Mag 2000 Inc | Lachine | Aircraft Maintenance, Service & Storage |
| Banafrica | Montréal | Business & Trade Organizations |
| Bar Le Griffon | Lachine | Brasseries |
| Bar Le Griffon | Lachine | Brasseries |
