| Aerus | Pointe-Claire | Central Vacuum Systems |
| Aerzen Canada Inc. | Vaudreuil-Dorion | Tout Entreprises et services |
| AES Chemunex Canada | Laval | Life Sciences and Health Technologies (LSHT) |
| Aesthetique Tallie Inc | Pointe-Claire | Beauty & Fitness, Hairdressers & Beauty Salons |
| Aesus Systems, Inc. | Pointe-Claire | Tout Entreprises et services |
| AETERNA FUNERAL COMPLEX | Montréal | Funeral Homes, Services |
| AEV Rendering | Montréal | Architectural Drawing |
| Affacturage Canada Inc. | Dorval | Tout Entreprises et services |
| Agence De Ventes Charles Martinole | Blainville | Shopping Mall |
| Air Algerie | Dorval | Airline Ticket Agencies |
Publicité (Desktop) Publicité (Mobile) |
| Air Data Inc | Mont-Royal | Aerospace, Aircraft Parts, Engines & Avionics, Tout Entreprises et services |
| AIR IMEX Ltée | Montréal | Aerial Photographers |
| Air Inuit (1985) Ltd | Dorval | Airlines |
| Air Inuit Ltd | Dorval | Airlines |
| Air Inuit Ltd | Dorval | Airlines |
| Air Inuit Ltée | Dorval | Airlines |
| AIR RESEARCH TECHNOLOGY INC. | Montréal | Aerospace |
| Air View Concept | Brossard | Aerial Photographers |
| AIRCRAFT EQUIPMENT & SUPPORT SERVICES | Dorval | Aerospace |
| Airline Network Services | Dorval | Airlines |
Publicité (Desktop) Publicité (Mobile) |
| Airline Services International Inc | Dorval | Airlines |
| AIRNAV ELECTRONIC | Dorval | Aerospace |
| Airnav Électronique Ltée | Dorval | Tout Entreprises et services |
| Airtrades Transitaires | Dorval | Tout Entreprises et services |
| Airviews | Montréal | Aerial Photographers |
| Airviews - Imageries Aériennes | Montréal | Aerial Photographers |
| Alarme Sentinelle | Dorval | Tout Entreprises et services |
| Alexis Leduc Paysagiste | Blainville | Landscaping |
| Align Aerospace | Boucherville | Aviation Consultants & Services |
| Alliages Unifiés | Dorval | Tout Entreprises et services |
Publicité (Desktop) Publicité (Mobile) |
| Allied Universal Security Services | Dorval | Tout Entreprises et services |
| Aloha Institut De Beauté | Blainville | Beauty & Fitness, Hairdressers & Beauty Salons |
| Alphacable | Blainville | Tout Informatique et internet |
| 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 |
| Altitude Aerospace Inc | Montréal | Aircraft Maintenance, Service & Storage |
| Altitude Aerospace Inc | Montréal | Aircraft Maintenance, Service & Storage |
Publicité (Desktop) Publicité (Mobile) |
| 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 |
| AMEC AMÉRIQUES LIMITÉE | Dorval | Life Sciences and Health Technologies (LSHT) |
| Amenzone Fitness | Dorval | Fitness Gyms |
| American Airlines | Dorval | Airlines |
| American Eagle & Aerie | Brossard | Clothing Manufacturers & Wholesalers |
| AMESYS | Montréal | Aerospace |
