| 10Plé | Sherbrooke | Advertising Agencies |
| 37e AVENUE | Montréal | Advertising Agencies |
| 9007-8320 Québec Inc | Anjou | Advertising Agencies |
| A C Riley Communications | Montréal | Advertising Agencies |
| A Fabrice Entreprise | Montréal | Bus Stations & Ticket Agencies |
| A Inc | Laval | Bus Stations & Ticket Agencies |
| A+Quick Socal Media Business | Montréal | Advertising Agencies |
| A.P. Reid Insurance Stores | Montréal | Car Insurance |
| A1 Agencies Techniques | Montréal | Air Conditioning Contractors |
| Abnakaccbi | Montréal | Airline Ticket Agencies |
Publicité (Desktop) Publicité (Mobile) |
| Abscoa Industries Inc. | Montréal | Boat Dealers & Brokers |
| ABZ Assurances-Insurance | Westmount | Car Insurance |
| ACA | Westmount | Collection Agencies |
| Accenture | Montréal | Information Technologies (IT) |
| ACCEO Solutions | Montréal | Information Technologies (IT), Tout Informatique et internet |
| Accroche Pub | Brossard | Advertising Agencies |
| Active Business & Realty Inc | Mont-Royal | Business Brokers |
| Adelson Et Associés | Montréal | Business Insurance |
| ADN Laboratoire Graphique | Montréal | Advertising Agencies |
| Adoption Formons Une Famille (Société Dô) | Montréal | Adoption Agencies & Services |
Publicité (Desktop) Publicité (Mobile) |
| ADP Canada R-L | Montréal | Information Technologies (IT) |
| Advanced Collection Services | Montréal | Collection Agencies |
| Advanceit Financial Corp | Montréal | Computer Networking |
| Advanceit Financial Corp | Westmount | Computer Networking |
| Adven | Lasalle | Airline Ticket Agencies |
| Advend | Montréal | Advertising Agencies |
| Adzura | Montréal | Advertising Agencies |
| Affichage | Brossard | Advertising Agencies |
| Afrodeal | Montréal | Advertising Agencies |
| Agence & Co | Anjou | Advertising Agencies |
Publicité (Desktop) Publicité (Mobile) |
| Agence de Recouvrement 911 | Montréal | Collection Agencies |
| Agence De Recouvrement Cba Ltee | Montréal | Collection Agencies |
| Agence De Recouvrement Dca | Montréal | Collection Agencies |
| Agence De Recouvrement Gagnon Et Associés Inc | Montréal | Collection Agencies |
| Agence De Recouvrement Global | Saint-Léonard | Collection Agencies |
| Agence de Recouvrement Lasalle Inc | Montréal | Collection Agencies |
| Agence De Recouvrement Serf Inc | Anjou | Collection Agencies |
| Agence de Recouvrement Systèmes de Crédit Shellc o Ltée | Montréal | Collection Agencies |
| Agence Donaghy | Longueuil | Advertising Agencies |
| Agence Impak Media Inc | Montréal | Advertising Agencies |
Publicité (Desktop) Publicité (Mobile) |
| Agence M S Enr | Montréal | Advertising Agencies |
| Agence OZ Pubilicité Communication Web | Saint-Bruno | Advertising Agencies |
| Agences Roger Boutin Inc | Boucherville | Business Brokers |
| Agences Sdr Agencies Inc | Montréal | Flooring |
| Agent Par Courriel | Montréal | Car Insurance |
| Ahidjo Design | Montréal | Advertising Agencies |
| Air Algerie | Dorval | Airline Ticket Agencies |
| Air Ticket Market | Montréal | Airline Ticket Agencies |
| Aja Assurances | Montréal | Car Insurance |
| Albert Seliger | Montréal | Business Insurance |
