| 40 Westt | Pointe-Claire | Tout Bars et restaurants |
| 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-1 Test de Pyrite/Vermiculite/Amiante/Environnemental/ | Longueuil | Analytical & Testing Laboratories, Asbestos Testing & Consultants |
| Ab Mcmahon | Pointe-Claire | ab |
| Abbott Laboratories Limited | Montréal | Tout Entreprises et services |
| ABEONA SYSTEMS INC. | Montréal | Life Sciences and Health Technologies (LSHT) |
| ABP | Montréal | Tout Commerces au détail, Tout Entreprises et services |
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| ACSP-Québec | Montréal | Tout Entreprises et services |
| 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 |
| 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 |
| Aerofil | Pointe-Claire | Life Sciences and Health Technologies (LSHT) |
| AERONAV NAVIGATION INTERNATIONAL | Pointe-Claire | Aerospace |
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| AEROSPHERE | Pointe-Claire | Aerospace |
| 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 |
| AGAT Laboratoires | Montréal | Analytical & Testing Laboratories |
| AGAT Laboratories | Montréal | Analytical & Testing Laboratories |
| Agat Laboratories | Montréal | Analytical & Testing Laboratories |
| Air Saphir - Qualité d'air | Laval | Analytical & Testing Laboratories |
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| Air-Ins Inc | Varennes | Analytical & Testing Laboratories |
| Airmax Environnement | Montréal | Analytical & Testing Laboratories |
| AirScience | Pointe-Saint-Charles | Tout Entreprises et services |
| AkioSoft | Ouest | Life Sciences and Health Technologies (LSHT) |
| Alain Delorme Urbaniste | Brossard | Analytical & Testing Laboratories |
| Albuca | Pointe-Claire | Life Sciences and Health Technologies (LSHT) |
| Alerte fissure inc. | Montréal | Tout Entreprises et services |
| Algorithme Pharma Inc | Mont-Royal | Analytical & Testing Laboratories |
| Aliments Alasko Inc. | Montréal | Agri-food |
| Aliments Ange-Gardien | Saint-Jean-Sur-Richelieu | Tout Entreprises et services |
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| Aliments Cargill (Les) | Chambly | Agri-food |
| Aliments Cell Inc. | Pointe-Claire | Agri-food |
| Aliments Cibona Foods | Montréal | Agri-food |
| Aliments Conagra Canada Inc. | Boisbriand | Agri-food |
| Aliments Da Vinci Ltée (Les) | Montréal | Agri-food |
| Aliments Dole Canada | Laval | Agri-food |
| Aliments du Québec | Longueuil | Tout Commerces au détail, Tout Entreprises et services |
| Aliments Ed Foods Inc. | Pointe-Claire | Agri-food |
| Aliments Expresco Inc. | Montréal | Agri-food |
| Aliments Fontaine Santé Inc. | Montréal | Agri-food |
