| Airtrades Transitaires | Dorval | Tout Entreprises et services |
| AkioSoft | Ouest | Life Sciences and Health Technologies (LSHT) |
| Alarme Sentinelle | Dorval | Tout Entreprises et services |
| Albuca | Pointe-Claire | Life Sciences and Health Technologies (LSHT) |
| 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 |
Publicité (Desktop) Publicité (Mobile) |
| Alliages Unifiés | Dorval | Tout Entreprises et services |
| Allied Universal Security Services | Dorval | Tout Entreprises et services |
| Alta Material Handling | Dorval | Tout Entreprises et services |
| Altrom/Auto-Camping - Dorval | Dorval | Auto Body Shop Equipment & Supplies |
| Amacor Marketing | Dorval | Tout Commerces au détail |
| Amazonia General Store | Pointe-Claire | Bedding & Linens |
| Amber Esthetics & Makeup Studio | Dorval | Beauty & Fitness, Hairdressers & Beauty Salons |
| Amcor | Dorval | Tout Entreprises et services |
| AMEC AMÉRIQUES LIMITÉE | Dorval | Life Sciences and Health Technologies (LSHT) |
| Amenzone Fitness | Dorval | Fitness Gyms |
Publicité (Desktop) Publicité (Mobile) |
| American Airlines | Dorval | Airlines |
| American Iron & Metal Co. Inc. | Montréal | Tout Entreprises et services |
| Ameublement Euro Style | Dorval | Tout Commerces au détail |
| Ameublement Place à Téqui | Pointe-Aux-Trembles | Appliance Repair |
| Ameublements De Bureau Intrtch | Dorval | Furniture Stores |
| Ameublements El Ran Ltée | Pointe-Claire | Furniture Stores |
| Ameublements Thomasville | Pointe-Claire | Furniture Stores |
| Amplex Chemical Products Ltd | Pointe-Claire | Chemicals |
| AMS Physiotherapy & Rehabilitation Centre | Dorval | Physiotherapy |
| An Ko | Pointe-Claire | kz |
Publicité (Desktop) Publicité (Mobile) |
| Andersen & Associates | Pointe-Claire | Civil Engineers |
| Anglo Eastern Ship Management Ltd. | Pointe-Claire | Tout Entreprises et services |
| Anjinnov Construction | Montréal | Tout Entreprises et services |
| Anodisation Montréal Inc | Dorval | Anodizing |
| Antiquités du Village | Pointe-Claire | Antique Reproductions |
| Apotex Inc. | Pointe-Claire | Tout Entreprises et services |
| Appareils électroménagers Richard Couture | Pointe-Aux-Trembles | Appliance Repair |
| Aqua Performa | Dorval | Fitness Gyms |
| Aquarius Perfect Body Zone | Pointe-Claire | Health and Beauty |
| AR Super Couvreur | Pointe-Aux-Trembles | Roofing |
Publicité (Desktop) Publicité (Mobile) |
| ARA robotique | Montréal | Information Technologies (IT) |
| Arctic Glacier | Dorval | Tout Entreprises et services |
| Ares Cuisine Head Office | Dorval | Appliance Manufacturers & Wholesalers |
| ARJ Construction | Pointe-Aux-Trembles | Plumbing |
| Armoires Promina Inc | Pointe-Claire | Kitchen Cabinets |
| Armolan Furniture | Dorval | Cabinet Makers |
| Arrow Electronics | Dorval | Tout Entreprises et services |
| Arslan Automotive Canada Ltée | Pointe-Claire | Tout Commerces au détail |
| ASCO Valve Canada | Dorval | Tout Entreprises et services |
| Aspirateur Montréal | Pointe-Aux-Trembles | Central Vacuum Systems |
