| Agotech | Laval | Car Alarm Systems |
| Air Algerie | Dorval | Airline Ticket Agencies |
| Air Inuit (1985) Ltd | Dorval | Airlines |
| Air Inuit Ltd | Dorval | Airlines |
| Air Inuit Ltd | Dorval | Airlines |
| Air Inuit Ltée | Dorval | Airlines |
| Airco Den Bec | Longueuil | Air Conditioning Systems & Parts |
| AIRCRAFT EQUIPMENT & SUPPORT SERVICES | Dorval | Aerospace |
| Airline Network Services | Dorval | Airlines |
| Airline Services International Inc | Dorval | Airlines |
Publicité (Desktop) Publicité (Mobile) |
| AIRNAV ELECTRONIC | Dorval | Aerospace |
| Airnav Électronique Ltée | Dorval | Tout Entreprises et services |
| AirScience | Pointe-Saint-Charles | Tout Entreprises et services |
| Airtec Contrôle | Saint-Hubert | Air Conditioning Systems & Parts |
| Airtrades Transitaires | Dorval | Tout Entreprises et services |
| AkioSoft | Ouest | Life Sciences and Health Technologies (LSHT) |
| Alain Berthiaume CPA Inc | Longueuil | Bookkeeping Software & Accounting Systems |
| Alarme Securi-Tek | Montréal | Car Alarm Systems |
| Alarme Sentinelle | Dorval | Tout Entreprises et services |
| Alarmes et Antivols Sécurimax Inc | Saint-Jérôme | Car Alarm Systems |
Publicité (Desktop) Publicité (Mobile) |
| Albuca | Pointe-Claire | Life Sciences and Health Technologies (LSHT) |
| ALDO Accessoires | Montréal | Air Conditioning Systems & Parts |
| Alert Fire Protection - Alert Sprinklers Inc | Châteauguay | Automatic Fire Sprinkler Systems |
| Alert Fire Protection - Alert Sprinklers Inc | Châteauguay | Automatic Fire Sprinkler Systems |
| 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) |
| Allia Expertise Inc | Saint-Bruno | Bookkeeping Software & Accounting Systems |
| 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) |
Publicité (Desktop) Publicité (Mobile) |
| Amenzone Fitness | Dorval | Fitness Gyms |
| 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 |
