| AERONAV NAVIGATION INTERNATIONAL | Pointe-Claire | Aerospace |
| Aeroneuf Instruments Ltée | Dorval | Aerospace, Aircraft Parts, Engines & Avionics |
| AEROPORT DORVAL/MIRABEL | Dorval | Blue Pages |
| AEROPORT MIRABEL | Mirabel | Blue Pages |
| Aerospace Concepts of Canada Inc | Montréal | Aviation Consultants & Services |
| Aerospace Development Corp | Montréal | Aircraft & Private Jet Charter |
| Aerospace Group | Montréal | Aircraft Dealers |
| AEROSPACE WELDING | Blainville | Aerospace |
| Aerospace Welding Inc | Blainville | Tout Entreprises et services, Aviation Consultants & Services |
| Aerospatiale Kaycee | Dorval | Aircraft Parts, Engines & Avionics |
Publicité (Desktop) Publicité (Mobile) |
| AEROSPHERE | Pointe-Claire | Aerospace |
| Aerosystems International Inc. | Montréal | Aerospace, Tout Entreprises et services |
| Aerotechnick Inc | Montréal | Aircraft Parts, Engines & Avionics |
| Aerotek | Montréal | Business Centres |
| Aerus | Montréal | Air Purifiers |
| 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 |
Publicité (Desktop) Publicité (Mobile) |
| AETERNA FUNERAL COMPLEX | Montréal | Funeral Homes, Services |
| AEV Rendering | Montréal | Architectural Drawing |
| Affacturage Canada Inc. | Dorval | Tout Entreprises et services |
| Ag Qureshi | Pointe-Claire | ag |
| AG3 Sécurité | Pointe-Saint-Charles | Tout Entreprises et services |
| Air Algerie | Dorval | Airline Ticket Agencies |
| 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 |
Publicité (Desktop) Publicité (Mobile) |
| 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 |
| Airline Services International Inc | Dorval | Airlines |
| AIRNAV ELECTRONIC | Dorval | Aerospace |
| Airnav Électronique Ltée | Dorval | Tout Entreprises et services |
| AirScience | Pointe-Saint-Charles | Tout Entreprises et services |
Publicité (Desktop) Publicité (Mobile) |
| Airtrades Transitaires | Dorval | Tout Entreprises et services |
| Airviews | Montréal | Aerial Photographers |
| Airviews - Imageries Aériennes | Montréal | Aerial Photographers |
| 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 |
| Align Aerospace | Boucherville | Aviation Consultants & Services |
| Aliments Cell Inc. | Pointe-Claire | Agri-food |
| Aliments Ed Foods Inc. | Pointe-Claire | Agri-food |
