| Anton Paar Canada | Montréal | Catalogue & Online Shopping |
| Antonio Noviello | Montréal | Cleaning Services, Cleaning Service |
| Antonio Ragone | Saint-Léonard | Landscaping |
| Antonio's Bella Cucina | Montréal | Caterers |
| Antonucci Silvio | Montréal | Car Repair |
| Antranik Kiork | Laval | Auto Body Shop |
| Anvil International Canada | Montréal | Building Contractors |
| Anywr | Centre-Ville | Tout Entreprises et services |
| Anz Inc | Brossard | Shopping Mall |
| 01 Annonces Classées | Cartierville (ahuntsic) | Tout Commerces au détail |
Publicité (Desktop) Publicité (Mobile) |
| 211 Grand Montréal | Montréal | Tout Informations générales |
| 24/7 Towing Anjou | Anjou | Boat Towing |
| 7571470 Canada Inc. (Opus Pharma) | Montréal | Life Sciences and Health Technologies (LSHT) |
| 99andbeyond (anciennement Solutions CognitiveChem inc.) | Dépatie | Life Sciences and Health Technologies (LSHT) |
| A Anael Antique | Montréal | Antique Dealers |
| A Anael Antique | Montréal | Antique Dealers |
| A Antiquité Arsène Enr | Sainte-Rose | Antique Dealers |
| A Antiquités Ancestrale Enr | Laval | Antique Dealers |
| A Arsène Lupin Antiquités | Montréal | Antique Dealers |
| A&C American Chemicals | Montréal | Life Sciences and Health Technologies (LSHT) |
Publicité (Desktop) Publicité (Mobile) |
| A-1 Test de Pyrite/Vermiculite/Amiante/Environnemental/ | Longueuil | Analytical & Testing Laboratories, Asbestos Testing & Consultants |
| Abattage Daniel Inc | Les Cèdres | Animal Breeders |
| Abbott Canada (Abbott Nutrition & Santé Animale) | Montréal | Life Sciences and Health Technologies (LSHT) |
| Académie Canine RM | Saint-Hyacinthe | Animal Breeders |
| ACAM - Annonces Classées à Montréal | Montréal | Tout Commerces au détail |
| Access Graphics Of Canada Att | Saint-Léonard | Computer Graphics Design & Animation |
| Accounting and Tax Solutions | Montréal | Bookkeeping Software & Accounting Systems |
| Accélérateur HEC-Banque Nationale | Montréal | Startup Ecosystem |
| Accés Global Services Financiers Inc | Montréal | Annuities |
| Ace Cleaning Services | Anjou | Cleaning Services, Cleaning Service |
Publicité (Desktop) Publicité (Mobile) |
| Achat antiquité.com | Montréal | Antique Dealers |
| Action pour les Animaux Urbains | Montréal | Animal Shelters & Protection Services |
| Acupuncture Anika Mendell | Montréal | Acupuncturists |
| Acupuncture Annie Boulanger - Villeray | Montréal | Acupuncturists |
| Acupuncture Annie Duguay | Montréal | Acupuncturists |
| Adam Ant - Montreal | Montréal | Tout Informations générales |
| Adare Pharmatech Canada | Mont-Saint-Hilaire | Life Sciences and Health Technologies (LSHT) |
| Adiantum Production (anciennement Laboratoires Capsulab Inc.) | Dollard | Life Sciences and Health Technologies (LSHT) |
| ADP Canada Inc. | Anjou | Tout Entreprises et services |
| Advanced Business Analytics Inc. | Montréal | Physiotherapy |
Publicité (Desktop) Publicité (Mobile) |
| Advanomics Corporation | Montréal | Life Sciences and Health Technologies (LSHT) |
| Advanomics Corporation Inc. | Étage | Life Sciences and Health Technologies (LSHT) |
| AES Chemunex Canada | Laval | Life Sciences and Health Technologies (LSHT) |
| AFX Medical (avant Arctic Fox AI) | Henri-Julien | Life Sciences and Health Technologies (LSHT) |
| Agence Artistique De L'Ange | Verdun | Art Galleries, Dealers & Consultants |
| 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 |
| Al-Anon Groupes Familiaux | Montréal | Associations |
| Alain Delorme Urbaniste | Brossard | Analytical & Testing Laboratories |
