| 9132-1000 Québec Inc | Lachine | Business & Trade Organizations |
| 9141-2148 Québec Inc | Westmount | Cleaning Services, Cleaning Service |
| A S T Inc | Montréal | Business & Trade Organizations |
| A+Quick Socal Media Business | Montréal | Advertising Agencies |
| A.P. Reid Insurance Stores | Montréal | Car Insurance |
| ABP Consultants en personnel | Westmount | Tout Entreprises et services |
| ABZ Assurances-Insurance | Westmount | Car Insurance |
| ACA | Westmount | Collection Agencies |
| Académie Ballet Flamenco Lina Moros | Westmount | Tout Enseignement et savoir |
| Acier Wirth Steel | Westmount | Aluminum |
Publicité (Desktop) Publicité (Mobile) |
| Action Graphix Longueil | Longueuil | Business Centres |
| Action Sport Physio | Westmount | Tout Entreprises et services, Physiotherapy |
| Active Business & Realty Inc | Mont-Royal | Business Brokers |
| Adelman, Adam | Westmount | Boutiques |
| Adelson Et Associés | Montréal | Business Insurance |
| Advanced Business Analytics Inc. | Montréal | Physiotherapy |
| Advanceit Financial Corp | Westmount | Computer Networking |
| Aerotek | Montréal | Business Centres |
| Agence Imapro Inc | Lachine | Business & Trade Organizations |
| Agences Roger Boutin Inc | Boucherville | Business Brokers |
Publicité (Desktop) Publicité (Mobile) |
| Agent Par Courriel | Montréal | Car Insurance |
| Air-Therm Inc | Westmount | Plumbing |
| Aja Assurances | Montréal | Car Insurance |
| Alain Lessard | Montréal | Business Lawyers |
| Albert Seliger | Montréal | Business Insurance |
| ALCiE Integrated Business Solutions | Montréal | Tout Informatique et internet |
| Alexander Lewis | Montréal | Car Insurance |
| Alexandre Germain | Longueuil | Business Lawyers |
| Allali Brault | Montréal | Business Lawyers |
| Alliance Web-Commerce | Montréal | Business & Trade Organizations |
Publicité (Desktop) Publicité (Mobile) |
| AlloFirm | Montréal | Business Brokers |
| Allstate Assurance: Antonino Scalia | Anjou | Car Insurance |
| Allstate Assurance: David Varano | Montréal | Car Insurance |
| Allstate Assurance: Filomena Galante | Montréal | Car Insurance |
| Allstate Assurance: Jonathan Viau | Saint-Léonard | Car Insurance |
| Allstate Assurance: Joseph Kamal | Montréal | Car Insurance |
| Allstate Assurance: Maria Campanelli | Montréal | Car Insurance |
| Allstate Assurance: Wissam Deir | Montréal | Car Insurance |
| Altea Furniture | Westmount | Antique Restoration, Refinishing & Repair |
| AM1280 CFMB | Westmount | Tout Médias montréalais |
Publicité (Desktop) Publicité (Mobile) |
| Amadea S. Kezar Physiothérapie | Westmount | Physiotherapy |
| Amicom Inc | Longueuil | Business Centres |
| Amir Assurances | Montréal | Car Insurance |
| AmorChem Holdings Inc | Montréal | Life Sciences and Health Technologies (LSHT) |
| AmorChem Therapeutics Inc | Westmount Square | Life Sciences and Health Technologies (LSHT) |
| Andrea Flütsch | Westmount | Physiotherapy |
| Antiquites Coach House Enr | Westmount | Antique Dealers |
| Aplast Canada Inc | Westmount | Home Improvement |
| Aptilon | Montréal | Business & Trade Organizations |
| AquaExpert | Westmount | Aquariums & Supplies |
