| Airtechni Inc. | Montréal | Tout Entreprises et services |
| Airtek Ltd-Ltée | Montréal | Abrasives, Tout Entreprises et services |
| Airtop-Ventilation | Montréal | Cleaning Services, Cleaning Service |
| Airy3D | Montréal | Information Technologies (IT) |
| AJ Hobbins | Saint-Luc | aj |
| Aj Tardif | Saint-Lambert | aj |
| AJA Construction Inc | Saint-Hubert | Bathroom Renovations |
| Akilon Technologies Inc | Longueuil | Computer Networking |
| AkioSoft | Ouest | Life Sciences and Health Technologies (LSHT) |
| AKKA Groupe Amérique du Nord | Montréal | Life Sciences and Health Technologies (LSHT) |
Publicité (Desktop) Publicité (Mobile) |
| Akzo Nobel Peintures Ltée | Saint-Jerome | Tout Entreprises et services |
| Alaby Joseph Dr | Saint-Lambert | Dentists |
| Alain Esthétique Auto | Montréal | Automobiles, car Dealers |
| Alarme Doven | Saint-Hubert | Tout Entreprises et services |
| Alarmes et Antivols Sécurimax Inc | Saint-Jérôme | Car Alarm Systems |
| Alaya Care Inc (Alaya Soins Inc) | Laurent | Life Sciences and Health Technologies (LSHT) |
| Alayacare | Québec | Life Sciences and Health Technologies (LSHT) |
| Albatrust - Colocation Data Center | Montréal | Information Technologies (IT) |
| Albuca | Pointe-Claire | Life Sciences and Health Technologies (LSHT) |
| Alcatel-Lucent Canada | Montréal | Information Technologies (IT) |
Publicité (Desktop) Publicité (Mobile) |
| Alchemy 24 | Montréal | Information Technologies (IT) |
| ALCiE Integrated Business Solutions | Montréal | Tout Informatique et internet |
| Alcoa innovation | Montréal | Clean Technologies |
| Aldea Solutions Inc | Montréal | Information Technologies (IT) |
| Aldeavision Inc. | Montréal | Tout Entreprises et services |
| ALDO | Saint-Bruno-De-Montarville | Boots |
| Aleco | Saint-Léonard | Building Contractors |
| Alerte Aménagement Paysager | Saint-Bruno | Landscaping |
| Alethia Biotherapeutics Inc. | Montréal | Life Sciences and Health Technologies (LSHT) |
| Alethia Biothérapeutiques Inc. | Montréal | Life Sciences and Health Technologies (LSHT) |
Publicité (Desktop) Publicité (Mobile) |
| Alexandra's Babysitting Services | Saint-Léonard | Babysitting Services |
| Alexandra's Nostalgic Memorabilia | Montréal | Antique Dealers |
| AlexSam - Pro Inc | Montréal | Cleaning Services, Cleaning Service |
| Alfa Clinique Médicale | Saint-Constant | Medical Clinics |
| Alfa Ménage | Montréal | Cleaning Services, Cleaning Service |
| Alfohno Pizzaria | Montréal | Pizza & Pizzerias |
| Algo Design | Laval | Information Technologies (IT) |
| Algolux | Montréal | Information Technologies (IT) |
| Algorithme Pharma Inc. - Une Compagnie d'Altasciences | Laval | Life Sciences and Health Technologies (LSHT) |
| Alice and smith | Montréal | Information Technologies (IT) |
Publicité (Desktop) Publicité (Mobile) |
| Aligo | Montréal | Information Technologies (IT) |
| Aliment Congelés Alasko Inc. | Saint-Léonard | Tout Entreprises et services |
| Aliment Select Int | Saint-Léonard | Beverage Distributors & Bottlers |
| Alimentation O’Crock | Saint-Jean-De-Matha | Tout Commerces au détail |
| Aliments Ange-Gardien | Saint-Jean-Sur-Richelieu | Tout Entreprises et services |
| Aliments Fontaine Santé Inc. | Montréal | Agri-food |
| Aliments Horium Inc. | Montréal | Agri-food |
| Aliments KOYO Inc. | Montréal | Tout Entreprises et services |
| Aliments Parmalat Inc. (Les) | Momtréal | Agri-food |
| Aliments Roma Ltée (Les) | Montréal | Agri-food |
