| Air Canada Cargo | Montréal | Airlines |
| Air Canada Reservations | Montréal | Airlines |
| Air Création Canada Inc | Saint-Mathieu-De-Beloeil | Aircraft & Flight Schools |
| Alain Couture | Montréal | Couture, COUTURE |
| Alcatel-Lucent Canada | Montréal | Information Technologies (IT) |
| Alcoa Canada | Montréal | Aluminum |
| Alcoa Canada Cie | Montréal | Aluminum, Aluminum Fabricators |
| Alice and smith | Montréal | Information Technologies (IT) |
| Aligo | Montréal | Information Technologies (IT) |
| Aliments Conagra Canada Inc. | Boisbriand | Agri-food |
Publicité (Desktop) Publicité (Mobile) |
| Aliments Dole Canada | Laval | Agri-food |
| Aliments Morehouse Canada Inc | Lachine | Agri-food |
| Aliments Ronzoni du Canada (Les) | Montréal | Agri-food |
| Allbudget Moving & Storage-Canada | Montréal | Moving Companies |
| Alliance de la Fonction Publique du Canada | Montréal | Community Service & Charitable Organizations |
| Altair Engineering Canada | Montréal | Information Technologies (IT) |
| Altaï Canada | Montréal | Tout Tourisme et hôtels |
| Alten Canada Inc | Montréal | Information Technologies (IT) |
| Alto Shaam Canada | Montréal | Commercial Kitchen Equipment |
| Amc Canada | Montréal | Airlines |
Publicité (Desktop) Publicité (Mobile) |
| AMD Ritmed Inc. | Québec | Life Sciences and Health Technologies (LSHT) |
| Amerella du Canada Ltée | Montréal | Tout Entreprises et services |
| Ameresco Canada Inc | Montréal | Life Sciences and Health Technologies (LSHT) |
| AmerisourceBergen Canada Corporation | Montréal | Life Sciences and Health Technologies (LSHT) |
| Analogic Canada | Montréal | Life Sciences and Health Technologies (LSHT) |
| Andre Couture | Laval | Couture, COUTURE |
| Andre Couture | Longueuil | Couture, COUTURE |
| Angkorienne du Canada | Montréal | Arts & Cultural Organizations & Centres |
| Anixter Canada | Montréal | Information Technologies (IT) |
| Anixter Canada | Boucherville | Information Technologies (IT) |
Publicité (Desktop) Publicité (Mobile) |
| Anixter Canada Inc. | Montréal | Tout Entreprises et services |
| Anjuna Airline Solutions-Canada | Montréal | Airlines |
| Ansys Canada Ltd. | Quartier Latin Et Centre-Sud | Tout Informatique et internet |
| Anton Paar Canada | Montréal | Catalogue & Online Shopping |
| 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 |
Publicité (Desktop) Publicité (Mobile) |
| Aqua Canada Appliances | Montréal | Appliance Repair & Service |
| Aramark Canada Ltée | Lasalle | Coffee Machines & Roasting Equipment |
| Arbrobec Parts Canada Ltd. | Mirabel | Tout Entreprises et services |
| ARCHANGELS Greek Orthodox Comm. | Montréal | Blue Pages |
| 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 |
| Arneg Canada Inc. | Lacolle | Tout Commerces au détail |
| Arrow Électronique Canada | Baie-D'urfé | Information Technologies (IT) |
| Arslan Automotive Canada Ltée | Pointe-Claire | Tout Commerces au détail |
