| 2MORO | Montréal | Aerospace |
| 40 Westt | Pointe-Claire | Tout Bars et restaurants |
| 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 |
| Ab Mcmahon | Pointe-Claire | ab |
Publicité (Desktop) Publicité (Mobile) |
| ABIPA CANADA INC. | Laval | Aerospace |
| Abrasifs Primex Inc | Sainte-Julie | Abrasives |
| 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) |
| Action Scuba | Pointe-Claire | Tout Commerces au détail |
| Acupuncteure Claire Lamarche | Drummondville | Acupuncturists |
| AD OPT | Montréal | Aerospace |
| ADACEL INC. | Brossard | Aerospace |
Publicité (Desktop) Publicité (Mobile) |
| Adapta Space | Pointe-Claire | Computer Accessories & Supplies |
| ADD CANADA COMPANY | Pointe-Claire | Information Technologies (IT) |
| Adhesifs Forbo (Canada) Ltée | Pointe-Claire | Tout Entreprises et services |
| ADVANTECH INC. | Dorval | Aerospace |
| Ae Fournier | Sainte-Therese | ae |
| Aerofil | Pointe-Claire | Life Sciences and Health Technologies (LSHT) |
| AERONAV NAVIGATION INTERNATIONAL | Pointe-Claire | Aerospace |
| Aeroneuf Instruments Ltée | Dorval | Aerospace, Aircraft Parts, Engines & Avionics |
| Aerospace Concepts of Canada Inc | Montréal | Aviation Consultants & Services |
| Aerospace Development Corp | Montréal | Aircraft & Private Jet Charter |
Publicité (Desktop) Publicité (Mobile) |
| 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 |
| Aerus | Pointe-Claire | Central Vacuum Systems |
| Aesthetique Tallie Inc | Pointe-Claire | Beauty & Fitness, Hairdressers & Beauty Salons |
| Aesus Systems, Inc. | Pointe-Claire | Tout Entreprises et services |
| Ag Qureshi | Pointe-Claire | ag |
| Aide a domicile-Isabelle | Sainte Julie | Cleaning Services, Cleaning Service |
Publicité (Desktop) Publicité (Mobile) |
| Air Data Inc | Mont-Royal | Aerospace, Aircraft Parts, Engines & Avionics, Tout Entreprises et services |
| AIR RESEARCH TECHNOLOGY INC. | Montréal | Aerospace |
| AIRCRAFT EQUIPMENT & SUPPORT SERVICES | Dorval | Aerospace |
| Airmax Climatisation | Sainte-Catherine | Air Purifiers |
| AIRNAV ELECTRONIC | Dorval | Aerospace |
| AkioSoft | Ouest | Life Sciences and Health Technologies (LSHT) |
| Albuca | Pointe-Claire | Life Sciences and Health Technologies (LSHT) |
| Align Aerospace | Boucherville | Aviation Consultants & Services |
| Aliments Cell Inc. | Pointe-Claire | Agri-food |
| Aliments Ed Foods Inc. | Pointe-Claire | Agri-food |
