| Allali Brault | Montréal | Business Lawyers |
| Alliance Web-Commerce | Montréal | Business & Trade Organizations |
| AlloFirm | Montréal | Business Brokers |
| Allstream | Lachine | Information Technologies (IT), Tout Entreprises et services, Tout Informatique et internet |
| Alongi | Lachine | Tout Commerces au détail, Tout Entreprises et services |
| Alpharegul | Boucherville | Tout Entreprises et services |
| Always B Clean | Lachine | Home Improvement |
| AMD Ritmed Inc. | Québec | Life Sciences and Health Technologies (LSHT) |
| Ameublement Simard Inc | Boucherville | Furniture Stores |
| Amicom Inc | Longueuil | Business Centres |
Publicité (Desktop) Publicité (Mobile) |
| AMJ Campbell Van Lines | Lachine | Tout Entreprises et services |
| AMRIKART R.C. INC. | Boucherville | Aerospace |
| Andrew & Friends - 90 Day Challenge | Lachine | Beauty Salon Equipment & Supplies |
| Anixia | Lachine | Calendars |
| Anixter Canada | Boucherville | Information Technologies (IT) |
| Annie Cyr Conseillère Indépendante Scentsy | Lachine | Aromatherapy |
| Annie Perron | Boucherville | Balconies |
| APL Construction | Boucherville | Building Contractors |
| Aptilon | Montréal | Business & Trade Organizations |
| Aquatech BM | Boucherville | Business & Trade Organizations |
Publicité (Desktop) Publicité (Mobile) |
| 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 |
| Aresx | Saint-Bruno | Business Brokers |
| Arishma D. Gokhool Attorney | Toronto | Business Lawyers |
| Armoire & Vanité L M Inc | Boucherville | Cabinet Makers |
| Armoires Cuisines Action | Boucherville | Tout Entreprises et services |
| Armoires Nouveau Concept | Boucherville | Cabinet Makers |
Publicité (Desktop) Publicité (Mobile) |
| Arrondissement de Lachine | Montréal | Tout Informations générales |
| Arrondissement de Lachine | Lachine | Not Profit, library |
| Art Dozé | Boucherville | Beauty & Fitness, Hairdressers & Beauty Salons |
| Art Forge | Lachine | Art Foundries |
| Arthur Malouin Ltée | Saint-Césaire | Business Insurance |
| Artisanat M | Boucherville | Furniture Stores |
| Ascendie Goliath | Boucherville | Automatic Fire Sprinkler Systems |
| Ashley's Little Gift Shop | Lachine | Candles |
| Assetco Recovery Services Inc | Mont-Royal | Business Valuation |
| Association béton Québec | Boucherville | Tout Entreprises et services |
Publicité (Desktop) Publicité (Mobile) |
| Association de l'enveloppe et des r... | Boucherville | Tout Entreprises et services |
| Association des Techniciens en Sant... | Lachine | Tout Entreprises et services |
| 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 |
