| AS Hanging Display Systems | Brossard | Shopping Mall |
| As Hanging Systems | Brossard | Shopping Mall |
| Ascendie Goliath | Boucherville | Automatic Fire Sprinkler Systems |
| ASCO Valve Canada | Dorval | Tout Entreprises et services |
| ASE Equipements Inc | Saint-Jean-Sur-Richelieu | Automation Systems & Equipment |
| ASG Canada | Montréal | Information Technologies (IT) |
| ASI Computer Technologies (Canada) Corp | Montréal | Information Technologies (IT) |
| Aslen Stratégies D'Affaires | Brossard | Bookkeeping Software & Accounting Systems |
| Aslen Stratégies D'affaires | Longueuil | Bookkeeping Software & Accounting Systems |
| Aspirateur 2000 Plus Repentigny | Repentigny | Central Vacuum Systems |
Publicité (Desktop) Publicité (Mobile) |
| Aspirateur Anjou Inc | Saint-Léonard | Central Vacuum Systems |
| Aspirateur Cyclo Vac Laval Ste-Rose | Sainte-Rose | Central Vacuum Systems |
| Aspirateur Desjardins | Roxboro | Central Vacuum Systems |
| Aspirateur Direct | Châteauguay | Central Vacuum Systems |
| Aspirateur Montréal | Pointe-Aux-Trembles | Central Vacuum Systems |
| Aspirateur St-Constant Inc | Sainte-Catherine | Central Vacuum Systems |
| Aspirateurs Ahuntsic | Montréal | Central Vacuum Systems |
| Aspirateurs Carstelle Inc | Salaberry-De-Valleyfield | Central Vacuum Systems |
| Aspirateurs Centrals Lasalle Electrolux Cyclovac Beam Epurair | Lasalle | Central Vacuum Systems |
| Aspirateurs Lasalle | Lasalle | Central Vacuum Systems |
Publicité (Desktop) Publicité (Mobile) |
| Aspirateurs MG Plus | Saint-Hubert | Central Vacuum Systems |
| Aspirateurs St Hubert | Saint-Hubert | Central Vacuum Systems |
| Aspire Tout | Le Gardeur | Central Vacuum Systems |
| Asplundh Canada | Terrebonne | Life Sciences and Health Technologies (LSHT) |
| Assima Canada / Wizart Canada | Montréal | Information Technologies (IT) |
| Association des scouts du Canada | Villeray | Tout Arts et divertissement, Tout Communautés et société |
| Association Sociale Inca Canada | Montréal | Associations |
| ASSYSTEM PRODUCT ENGINEERING CANADA | Montréal | Aerospace |
| AstraZeneca Canada | Longueuil | Life Sciences and Health Technologies (LSHT) |
| AstroVac - VacuMaid | Montréal | Central Vacuum Systems |
Publicité (Desktop) Publicité (Mobile) |
| AT&T Canada | Centre-Ville | Tout Entreprises et services |
| ATD DESIGN SERVICES (4071468 CANADA INC.) | Sainte-Geneviève | Aerospace |
| Atek Canada | Montréal | Tout Informatique et internet |
| Atelier De Daria Centro Canada | Montréal | Furniture Stores |
| Atelier Electronique Laprade Enr | Longueuil | Answering Machines & Equipment |
| ATEM Canada Inc | Montréal | Information Technologies (IT) |
| Atex Inc | Montréal | Business Forms & Systems |
| AtGen Canada | Laval | Life Sciences and Health Technologies (LSHT) |
| ATI Conception & Automatisation Inc | Laval | Automation Systems & Equipment |
| Atlantis Pompe & Filtration | Saint-Léonard | Chemical & Steam Cleaning Systems |
Publicité (Desktop) Publicité (Mobile) |
| Atlas Copco Compressors Canada | Dollard Des Ormeaux | Life Sciences and Health Technologies (LSHT), Compressors |
| Atome Distributeur Inc | Brossard | Business Forms & Systems |
| atvpartselectronique.com | Saint-Léonard | Tout Commerces au détail, Tout Entreprises et services |
| Auper Electronic Controls Inc. | Ste-Rose | Tout Entreprises et services |
| Auper Electronique Inc | Laval | Commercial Kitchen Equipment |
| Aust & Hachmann (Canada) Ltd | Pointe-Claire | Agri-food |
| Auticonsult Canada | Étage | Information Technologies (IT) |
| Auto Diesel 119483 Canada Inc | Laval | Auto Part Manufacturers & Wholesalers |
| Auto Hall Canada | Montréal | Car Repair |
| Auto Hall Canada Pie IX Inc | Montréal | Automobiles, car Dealers |
