| Adhésifs Proma Inc. | Anjou | Tout Entreprises et services |
| ADM Canada | Lachine | Tout Entreprises et services |
| ADP Canada Inc. | Anjou | Tout Entreprises et services |
| ADP Canada R-L | Montréal | Information Technologies (IT) |
| ADT Canada | Montréal | Information Technologies (IT) |
| ADT Services de Sécurité Canada Inc... | Montréal | Tout Entreprises et services |
| Adtran Canada | Montréal | Information Technologies (IT) |
| ADVANTECH INC. | Dorval | Aerospace |
| Aei Aviation (Canada) Inc. | Brossard | Aircraft Parts, Engines & Avionics |
| AERONAV NAVIGATION INTERNATIONAL | Pointe-Claire | Aerospace |
Publicité (Desktop) Publicité (Mobile) |
| Aeroneuf Instruments Ltée | Dorval | Aerospace, Aircraft Parts, Engines & Avionics |
| Aerospace Concepts of Canada Inc | Montréal | Aviation Consultants & Services |
| Aerospace Development Corp | Montréal | Aircraft & Private Jet Charter |
| Aerospace Group | Montréal | Aircraft Dealers |
| AEROSPACE WELDING | Blainville | Aerospace |
| Aerospace Welding Inc | Blainville | Tout Entreprises et services, Aviation Consultants & Services |
| AEROSPHERE | Pointe-Claire | Aerospace |
| Aerosystems International Inc. | Montréal | Aerospace, Tout Entreprises et services |
| Aerzen Canada Inc. | Vaudreuil-Dorion | Tout Entreprises et services |
| AES Chemunex Canada | Laval | Life Sciences and Health Technologies (LSHT) |
Publicité (Desktop) Publicité (Mobile) |
| Affacturage Canada Inc. | Dorval | Tout Entreprises et services |
| Agence & Co | Anjou | Advertising Agencies |
| Agence De Recouvrement Serf Inc | Anjou | Collection Agencies |
| Agence Parcs Canada | Montréal | Not Profit, library |
| Agilent Technologies Canada Inc | Montréal | Life Sciences and Health Technologies (LSHT) |
| Agilent Technologies Canada Inc | Montréal | Life Sciences and Health Technologies (LSHT) |
| AGRICULTURE AND AGRI-FOOD CANADA | Montréal | Blue Pages |
| Air Canada Cargo | Montréal | Airlines |
| Air Canada Reservations | Montréal | Airlines |
| Air Création Canada Inc | Saint-Mathieu-De-Beloeil | Aircraft & Flight Schools |
Publicité (Desktop) Publicité (Mobile) |
| Air Data Inc | Mont-Royal | Aerospace, Aircraft Parts, Engines & Avionics, Tout Entreprises et services |
| AIR RESEARCH TECHNOLOGY INC. | Montréal | Aerospace |
| AIRCRAFT EQUIPMENT & SUPPORT SERVICES | Dorval | Aerospace |
| AIRNAV ELECTRONIC | Dorval | Aerospace |
| 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) |
| Align Aerospace | Boucherville | Aviation Consultants & Services |
Publicité (Desktop) Publicité (Mobile) |
| Aligo | Montréal | Information Technologies (IT) |
| Aliment Select International | Anjou | Beverage Distributors & Bottlers |
| Alimentation Garde-Manger | Anjou | Tout Commerces au détail |
| Aliments Conagra Canada Inc. | Boisbriand | Agri-food |
| Aliments Dole Canada | Laval | Agri-food |
| Aliments Morehouse Canada Inc | Lachine | Agri-food |
| Aliments Ronzoni du Canada (Les) | Montréal | Agri-food |
| AlimPlus | Anjou | Tout Bars et restaurants, Tout Entreprises et services |
| Alizeti | Anjou | Bicycle Manufacturers & Wholesalers |
| Allbudget Moving & Storage-Canada | Montréal | Moving Companies |
