| 2MORO | Montréal | Aerospace |
| 40 Westt | Pointe-Claire | Tout Bars et restaurants |
| 4Pneus.ca, Pneus et mags a rabais | Boisbriand | Tout Commerces au détail |
| 4Tires.ca, Tires for Sale | Boisbriand | Tout Commerces au détail |
| 5+1 Coiffure .n.c | Boisbriand | Beauty & Fitness, Hairdressers & Beauty Salons |
| 9032-2253 Québec Inc | Pointe-Aux-Trembles | Aluminum |
| A & R Fourniture Inc | Pointe-Aux-Trembles | Appliance Repair |
| A Ct | Pointe-Calumet | ct |
| A E M Q Association des Entrepreneurs en Maçonnerie du Québec | Pointe-Aux-Trembles | Association Management |
| A.E. PETSCHE CANADA, INC. | Kirkland | Aerospace |
Publicité (Desktop) Publicité (Mobile) |
| AAA Canada | Montréal | Aerospace, Aircraft Maintenance, Service & Storage |
| Ab Mcmahon | Pointe-Claire | ab |
| Abbvie | Boisbriand | Life Sciences and Health Technologies (LSHT) |
| ABEONA SYSTEMS INC. | Montréal | Life Sciences and Health Technologies (LSHT) |
| ABIPA Canada Inc. | Boisbriand | Tout Entreprises et services |
| ABIPA CANADA INC. | Laval | Aerospace |
| ABP | Montréal | Tout Commerces au détail, Tout Entreprises et services |
| AccelLAB Inc. | Boisbriand | Life Sciences and Health Technologies (LSHT) |
| Acosta Canada | Boisbriand | Tout Entreprises et services |
| ACSP-Québec | Montréal | Tout Entreprises et services |
Publicité (Desktop) Publicité (Mobile) |
| Action Santé De Pointe St-Charles | Montréal | Health Services |
| Action Scuba | Pointe-Claire | Tout Commerces au détail |
| Action-Gardien | Pointe-Saint-Charles | Tout Informations générales |
| Acupuncteure Claire Lamarche | Drummondville | Acupuncturists |
| AD OPT | Montréal | Aerospace |
| ADACEL INC. | Brossard | Aerospace |
| 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 |
Publicité (Desktop) Publicité (Mobile) |
| 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 |
| 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 |
Publicité (Desktop) Publicité (Mobile) |
| 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 |
| AG3 Sécurité | Pointe-Saint-Charles | Tout Entreprises et services |
| 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 |
| AIRNAV ELECTRONIC | Dorval | Aerospace |
| AirScience | Pointe-Saint-Charles | Tout Entreprises et services |
