| 2MORO | Montréal | Aerospace |
| 7 Brothers Landscaping Inc | Sainte-Geneviève | Christmas Trees |
| 9331-5422 Québec Inc | Sainte-Julie | Beauty & Fitness, Hairdressers & Beauty Salons |
| A Antiquité Arsène Enr | Sainte-Rose | Antique Dealers |
| A Couture | Sainte-Catherine | Couture, COUTURE |
| A Ky | Sainte-Marthe-Sur-Le-Lac | ky |
| A.E. PETSCHE CANADA, INC. | Kirkland | Aerospace |
| AAA Canada | Montréal | Aerospace, Aircraft Maintenance, Service & Storage |
| ABIPA CANADA INC. | Laval | Aerospace |
| Abrasifs Primex Inc | Sainte-Julie | Abrasives |
Publicité (Desktop) Publicité (Mobile) |
| Abrasifs Primex Molemab Inc | Sainte-Julie | Abrasives |
| AC Lasalle | Sainte-Catherine | Cabinet Makers |
| Accélérateur HEC-Banque Nationale | Montréal | Startup Ecosystem |
| Acensi Canada | Montréal | Information Technologies (IT) |
| AD OPT | Montréal | Aerospace |
| ADACEL INC. | Brossard | Aerospace |
| ADVANTECH INC. | Dorval | Aerospace |
| Ae Fournier | Sainte-Therese | ae |
| AERONAV NAVIGATION INTERNATIONAL | Pointe-Claire | Aerospace |
| Aeroneuf Instruments Ltée | Dorval | Aerospace, Aircraft Parts, Engines & Avionics |
Publicité (Desktop) Publicité (Mobile) |
| 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 |
| AEROSPHERE | Pointe-Claire | Aerospace |
| Aerosystems International Inc. | Montréal | Aerospace, Tout Entreprises et services |
| Aide a domicile-Isabelle | Sainte Julie | Cleaning Services, Cleaning Service |
| Air Data Inc | Mont-Royal | Aerospace, Aircraft Parts, Engines & Avionics, Tout Entreprises et services |
| AIR RESEARCH TECHNOLOGY INC. | Montréal | Aerospace |
Publicité (Desktop) Publicité (Mobile) |
| AIRCRAFT EQUIPMENT & SUPPORT SERVICES | Dorval | Aerospace |
| Airmax Climatisation | Sainte-Catherine | Air Purifiers |
| AIRNAV ELECTRONIC | Dorval | Aerospace |
| Align Aerospace | Boucherville | Aviation Consultants & Services |
| Alphacasting Inc. | Montréal | Aerospace, Tout Entreprises et services |
| ALSIM | Montréal | Aerospace |
| ALTA PRÉCISION INC. | Anjou | Aerospace |
| Alternateur Démarreur Roussillon Enr | Sainte-Catherine | Alternators & Starters |
| ALTITUDE AEROSPACE | Montréal | Aerospace |
| Altitude Aerospace Inc | Montréal | Aircraft Maintenance, Service & Storage |
Publicité (Desktop) Publicité (Mobile) |
| Altitude Aerospace Inc | Montréal | Aircraft Maintenance, Service & Storage |
| ALUBOX (DIVISION DE JE LORTIE COMPAGNIE LTÉE) | Montréal | Aerospace |
| AMESYS | Montréal | Aerospace |
| AMPHENOL AIR LB NORTH AMERICA INC. | Saint-Hubert | Aerospace |
| AMRIKART R.C. INC. | Boucherville | Aerospace |
| Amusez-Vous! | Sainte-Julie | Tout Arts et divertissement |
| Anastasia Psychic Consultant(E) Psychique, Voyan te | Sainte-Julie | Astrologers & Psychics |
| Anaya Enfants | Sainte-Catherine | Tout Commerces au détail |
| André Moto Sport | Sainte-Catherine | All-Terrain Vehicles |
| Anne Drouin, artiste peintre | Sainte-Julie | Tout Arts et divertissement |
