| Anvil International Canada | Montréal | Building Contractors |
| Aplast Canada Inc | Westmount | Home Improvement |
| AppDirect Canada Inc | Montréal | Information Technologies (IT) |
| Apple Canada Inc. | Montréal | Tout Entreprises et services, Tout Informatique et internet |
| ApSTAT Technologies | Montréal | Information Technologies (IT) |
| Aptech Services Canada Ltée | Drvl | Computer Accessories & Supplies |
| Aqua Canada Appliances | Montréal | Appliance Repair & Service |
| Aramark Canada Ltée | Lasalle | Coffee Machines & Roasting Equipment |
| Aramark Refreshment | Lasalle | Coffee Break Services & Supplies |
| Arbrobec Parts Canada Ltd. | Mirabel | Tout Entreprises et services |
Publicité (Desktop) Publicité (Mobile) |
| ARCHANGELS Greek Orthodox Comm. | Montréal | Blue Pages |
| Architecture Baccanale | Lasalle | Architectural & Construction Specifications |
| Arctic Traveler Canada Ltd | Montréal | Garage Auto |
| Arianne Relocation Canada | Ville-Émard Et Côte-Saint-Paul | Tout Entreprises et services |
| Arlee Canada Inc | Montréal | Bedding & Linens |
| Armoires De Cuisine Et Comptoirs Lasalle | Greenfield Park | Beds |
| Arneg Canada Inc. | Lacolle | Tout Commerces au détail |
| Arnold Paintball | Lasalle | Painters |
| Arrondissement Lasalle | Lasalle | Tout Informations générales |
| Arrow Électronique Canada | Baie-D'urfé | Information Technologies (IT) |
Publicité (Desktop) Publicité (Mobile) |
| Arslan Automotive Canada Ltée | Pointe-Claire | Tout Commerces au détail |
| Artech Camps Canada | Montréal | Camps |
| Artelys Canada | Montréal | Information Technologies (IT) |
| Artemano Canada | Laval | Furniture Stores |
| Artemano Canada | Laval | Furniture Stores |
| Artisans Canada | Québec | Tout Commerces au détail |
| Aréna Jacques-Lemaire | Lasalle | Arenas, Stadiums & Athletic Fields |
| ASCO Valve Canada | Dorval | Tout Entreprises et services |
| ASG Canada | Montréal | Information Technologies (IT) |
| ASI Computer Technologies (Canada) Corp | Montréal | Information Technologies (IT) |
Publicité (Desktop) Publicité (Mobile) |
| ASI Group Financier Inc | Lasalle | Car Insurance |
| Aspirateurs Centrals Lasalle Electrolux Cyclovac Beam Epurair | Lasalle | Central Vacuum Systems |
| Aspirateurs Lasalle | Lasalle | 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 J'écris ma vie | Lasalle | Tout Enseignement et savoir |
| Association Sociale Inca Canada | Montréal | Associations |
| Assurance Jean-Claude Duchamps | Lasalle | Car Insurance |
| ASSYSTEM PRODUCT ENGINEERING CANADA | Montréal | Aerospace |
Publicité (Desktop) Publicité (Mobile) |
| AstraZeneca Canada | Longueuil | Life Sciences and Health Technologies (LSHT) |
| 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 D'Art Des Rapides | Lasalle | Art Schools |
| Atelier De Daria Centro Canada | Montréal | Furniture Stores |
| Ateliers M Driveshaft Inc | Lasalle | Tout Commerces au détail |
| ATEM Canada Inc | Montréal | Information Technologies (IT) |
| AtGen Canada | Laval | Life Sciences and Health Technologies (LSHT) |
| Atlas Copco Compressors Canada | Dollard Des Ormeaux | Life Sciences and Health Technologies (LSHT), Compressors |
