| Airtrades Transitaires | Dorval | Tout Entreprises et services |
| Alarme Sentinelle | Dorval | Tout Entreprises et services |
| Alexis Tapp Esthétique | Kirkland | Beauty & Fitness, Hairdressers & Beauty Salons |
| Align Aerospace | Boucherville | Aviation Consultants & Services |
| Aliments Krispy Kernels Inc. | Kirkland | Tout Entreprises et services |
| All Access Moving | Kirkland | Tout Entreprises et services |
| 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 |
Publicité (Desktop) Publicité (Mobile) |
| Alta Material Handling | Dorval | Tout Entreprises et services |
| ALTA PRÉCISION INC. | Anjou | Aerospace |
| ALTITUDE AEROSPACE | Montréal | Aerospace |
| 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 |
| Amber Esthetics & Makeup Studio | Dorval | Beauty & Fitness, Hairdressers & Beauty Salons |
| Amcor | Dorval | Tout Entreprises et services |
Publicité (Desktop) Publicité (Mobile) |
| AMEC AMÉRIQUES LIMITÉE | Dorval | Life Sciences and Health Technologies (LSHT) |
| Amenzone Fitness | Dorval | Fitness Gyms |
| Ameran Accounting Firm Inc. /CPA | Kirkland | Accounting Services, Bookkeeping |
| American Airlines | Dorval | Airlines |
| AMESYS | Montréal | Aerospace |
| Ameublement Euro Style | Dorval | Tout Commerces au détail |
| Ameublements De Bureau Intrtch | Dorval | Furniture Stores |
| AMPHENOL AIR LB NORTH AMERICA INC. | Saint-Hubert | Aerospace |
| AMRIKART R.C. INC. | Boucherville | Aerospace |
| AMS Physiotherapy & Rehabilitation Centre | Dorval | Physiotherapy |
Publicité (Desktop) Publicité (Mobile) |
| Anodisation Montréal Inc | Dorval | Anodizing |
| Anton Designs Coiffure | Kirkland | Beauty & Fitness, Black Hair Salons |
| AP&C Revêtements et Poudres Avancées | Montréal | Aerospace |
| AP&C Revêtements et Poudres Avancées | Montréal | Aerospace |
| Aqua Performa | Dorval | Fitness Gyms |
| AQUACOUPE TECHNOLOGY INC. | Mirabel | Aerospace |
| ARA robotique | Montréal | Information Technologies (IT) |
| Arctic Glacier | Dorval | Tout Entreprises et services |
| Ares Cuisine Head Office | Dorval | Appliance Manufacturers & Wholesalers |
| Armolan Furniture | Dorval | Cabinet Makers |
Publicité (Desktop) Publicité (Mobile) |
| Arrow Electronics | Dorval | Tout Entreprises et services |
| ARTEC TECHNOLOGIES | Montréal | Aerospace |
| ASCO Valve Canada | Dorval | Tout Entreprises et services |
| ASSYSTEM PRODUCT ENGINEERING CANADA | Montréal | Aerospace |
| ATD DESIGN SERVICES (4071468 CANADA INC.) | Sainte-Geneviève | Aerospace |
| Atelier Centre Du Pneu Groupe Unik | Dorval | Tire Shop |
| Atelier Maheva | Kirkland | Beauty & Fitness, Hairdressers & Beauty Salons |
| Auberge St-Louis | Dorval | Apartment Hotels |
| Audionova Inc. | Dorval | Tout Commerces au détail |
| Auto Bugatti Inc. | Dorval | Tout Commerces au détail |
