| ALCiE Integrated Business Solutions | Montréal | Tout Informatique et internet |
| Aldea Solutions Inc | Montréal | Information Technologies (IT) |
| Aldeavision Inc. | Montréal | Tout Entreprises et services |
| Alerte fissure inc. | Montréal | Tout Entreprises et services |
| Aliments Cell Inc. | Pointe-Claire | Agri-food |
| Aliments Ed Foods Inc. | Pointe-Claire | Agri-food |
| Aliments LUDA | Pointe-Claire | Tout Entreprises et services |
| Aliments Noble Inc. | Pointe-Claire | Agri-food |
| Allez-Up | Pointe-Saint-Charles | Tout Commerces au détail |
| Alstom Transport Information Solutions | Montréal | Information Technologies (IT) |
Publicité (Desktop) Publicité (Mobile) |
| Altea Furniture | Westmount | Antique Restoration, Refinishing & Repair |
| AM1280 CFMB | Westmount | Tout Médias montréalais |
| Amadea S. Kezar Physiothérapie | Westmount | Physiotherapy |
| Amazonia General Store | Pointe-Claire | Bedding & Linens |
| American Iron & Metal Co. Inc. | Montréal | Tout Entreprises et services |
| Ameublement Place à Téqui | Pointe-Aux-Trembles | Appliance Repair |
| Ameublements El Ran Ltée | Pointe-Claire | Furniture Stores |
| Ameublements Thomasville | Pointe-Claire | Furniture Stores |
| AmorChem Holdings Inc | Montréal | Life Sciences and Health Technologies (LSHT) |
| AmorChem Therapeutics Inc | Westmount Square | Life Sciences and Health Technologies (LSHT) |
Publicité (Desktop) Publicité (Mobile) |
| Amplex Chemical Products Ltd | Pointe-Claire | Chemicals |
| An Ko | Pointe-Claire | kz |
| Andersen & Associates | Pointe-Claire | Civil Engineers |
| Andrea Flütsch | Westmount | Physiotherapy |
| Anglo Eastern Ship Management Ltd. | Pointe-Claire | Tout Entreprises et services |
| Anjinnov Construction | Montréal | Tout Entreprises et services |
| Anjuna Airline Solutions-Canada | Montréal | Airlines |
| Antiquites Coach House Enr | Westmount | Antique Dealers |
| Antiquités du Village | Pointe-Claire | Antique Reproductions |
| Aplast Canada Inc | Westmount | Home Improvement |
Publicité (Desktop) Publicité (Mobile) |
| Apotex Inc. | Pointe-Claire | Tout Entreprises et services |
| Appareils électroménagers Richard Couture | Pointe-Aux-Trembles | Appliance Repair |
| Applications Adaptées & Solutions I... | Charlevoix | Tout Informatique et internet |
| AquaExpert | Westmount | Aquariums & Supplies |
| Aquarius Perfect Body Zone | Pointe-Claire | Health and Beauty |
| AR Super Couvreur | Pointe-Aux-Trembles | Roofing |
| Architech Solutions Bâtiments | Laval | Architects |
| ARJ Construction | Pointe-Aux-Trembles | Plumbing |
| Armoires Promina Inc | Pointe-Claire | Kitchen Cabinets |
| Arslan Automotive Canada Ltée | Pointe-Claire | Tout Commerces au détail |
Publicité (Desktop) Publicité (Mobile) |
| Artgold Fine Art Inc | Westmount | Antique Dealers |
| Aspirateur Montréal | Pointe-Aux-Trembles | Central Vacuum Systems |
| Aspler Joseph Jutras Inc | Westmount | Car Insurance |
| Assemblée Quaker de Montréal | Westmount | Tout Communautés et société |
| Association Canadienne Des Sommelie... | Montréal | Tout Entreprises et services |
| Association d'isolation du Québec (... | Montréal | Tout Entreprises et services |
| Association Des Employés De El-Ran Furniture Inc | Pointe-Claire | Furniture Stores |
| Association des entrepreneurs en ma... | Montréal | Tout Entreprises et services |
| Association des Médecins omnipratic... | Westmount | Tout Communautés et société |
| Association des Éditeurs de Langue... | Westmount | Tout Entreprises et services |
