| Aliments LUDA | Pointe-Claire | Tout Entreprises et services |
| Aliments Noble Inc. | Pointe-Claire | Agri-food |
| Allez-Up | Pointe-Saint-Charles | Tout Commerces au détail |
| Alliages Unifiés | Dorval | Tout Entreprises et services |
| Allied Universal Security Services | Dorval | Tout Entreprises et services |
| Alphacasting Inc. | Montréal | Aerospace, Tout Entreprises et services |
| ALSIM | Montréal | Aerospace |
| Alta Material Handling | Dorval | Tout Entreprises et services |
| ALTA PRÉCISION INC. | Anjou | Aerospace |
| ALTITUDE AEROSPACE | Montréal | Aerospace |
Publicité (Desktop) Publicité (Mobile) |
| Altitude Aerospace Inc | Montréal | Aircraft Maintenance, Service & Storage |
| Altitude Aerospace Inc | Montréal | Aircraft Maintenance, Service & Storage |
| Altrom/Auto-Camping - Dorval | Dorval | Auto Body Shop Equipment & Supplies |
| ALUBOX (DIVISION DE JE LORTIE COMPAGNIE LTÉE) | Montréal | Aerospace |
| 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 Eagle & Aerie | Brossard | Clothing Manufacturers & Wholesalers |
| American Iron & Metal Co. Inc. | Montréal | Tout Entreprises et services |
| AMESYS | Montréal | Aerospace |
| 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 |
| AMPHENOL AIR LB NORTH AMERICA INC. | Saint-Hubert | Aerospace |
Publicité (Desktop) Publicité (Mobile) |
| Amplex Chemical Products Ltd | Pointe-Claire | Chemicals |
| AMRIKART R.C. INC. | Boucherville | Aerospace |
| AMS Physiotherapy & Rehabilitation Centre | Dorval | Physiotherapy |
| An Ko | Pointe-Claire | kz |
| Andersen & Associates | Pointe-Claire | Civil Engineers |
| Anglo Eastern Ship Management Ltd. | Pointe-Claire | Tout Entreprises et services |
| Anjinnov Construction | Montréal | Tout Entreprises et services |
| Anne-Marie Picard | Laval | Real Estate Agents |
| Anodisation Montréal Inc | Dorval | Anodizing |
| Antiquités du Village | Pointe-Claire | Antique Reproductions |
Publicité (Desktop) Publicité (Mobile) |
| AP&C Revêtements et Poudres Avancées | Montréal | Aerospace |
| AP&C Revêtements et Poudres Avancées | Montréal | Aerospace |
| Apex Aérospatial Inc | Montréal | Aircraft Maintenance, Service & Storage |
| Apotex Inc. | Pointe-Claire | Tout Entreprises et services |
| Appareils électroménagers Richard Couture | Pointe-Aux-Trembles | Appliance Repair |
| Aqua Performa | Dorval | Fitness Gyms |
| AQUACOUPE TECHNOLOGY INC. | Mirabel | Aerospace |
| Aquarius Perfect Body Zone | Pointe-Claire | Health and Beauty |
| AR Super Couvreur | Pointe-Aux-Trembles | Roofing |
| ARA robotique | Montréal | Information Technologies (IT) |
