| ABB Inc. | Montréal | Tout Entreprises et services |
| Abba | Montréal | Clothing Manufacturers & Wholesalers |
| Abbas Sabet | Montréal | Chartered Professional Accountants (CPA) |
| Abbaye Val Notre-Dame | Saint-Jean-De-Matha | Tout Commerces au détail, Tout Communautés et société |
| Abbott Canada (Abbott Nutrition & Santé Animale) | Montréal | Life Sciences and Health Technologies (LSHT) |
| Abbott Laboratories Limited | Montréal | Tout Entreprises et services |
| Abbvie | Boisbriand | Life Sciences and Health Technologies (LSHT) |
| Abbvie (Corporation) | Montréal | Life Sciences and Health Technologies (LSHT) |
| AbbVie Corporation | Montréal | Life Sciences and Health Technologies (LSHT) |
| AbbVie Inc. | Montréal | Tout Entreprises et services |
Publicité (Desktop) Publicité (Mobile) |
| Abc | Mont-Royal | Cable TV Providers |
| ABC Distribution | Montréal | Tout Entreprises et services |
| ABC Drain | Montréal | Plumbing |
| ABC Emballuxe Inc | Montréal | Tout Entreprises et services, Bakery Supplies |
| ABC Emballuxe Inc | Montréal | Bakery Supplies |
| ABC Gestion Parasitaire | Ville-Mont-Royal | Tout Commerces au détail |
| ABC Inc | Montréal | Plumbing |
| ABC Paysagement | Montréal | Landscaping |
| ABC Sablage Richard | Montréal | Flooring |
| ABC Sablage Richard | Montréal | Flooring |
Publicité (Desktop) Publicité (Mobile) |
| ABC Service D'Arbre | Montréal | Landscaping |
| Abdala Hasan | Montréal | Artists |
| Abdel Wajed Doumi El Baqqali | Saint-Lambert-De-Lauzon | el |
| Abe & Mary's | Montréal | Boutiques |
| ABE Climatisation Inc. | Saint-Léonard | Air Purifiers |
| Abe Cohen Plumbing & Heating Inc | Montréal | Plumbing |
| Abe Cohen Plumbing Heating Inc | Montréal | Plumbing |
| Abeille Déco-Entrepreneurs | Montréal | Painters |
| Abel Bwem CPA | Montréal | Accounting Services |
| Abel Excavation Enr | Saint-Léonard | Plumbing |
Publicité (Desktop) Publicité (Mobile) |
| Abel Traiteur | Montréal | Caterers |
| ABEONA SYSTEMS INC. | Montréal | Life Sciences and Health Technologies (LSHT) |
| Abilis Solutions | Montréal | Information Technologies (IT) |
| ABIPA CANADA INC. | Laval | Aerospace |
| Abitec Développements | Montréal | Home Improvement |
| Able Chinese Acupuncture Clinic | Montréal | Acupuncturists, Alternative Health |
| Abloy Canada Inc. | Montréal | Tout Entreprises et services |
| Abnakaccbi | Montréal | Airline Ticket Agencies |
| Abou-Nasr Mona Dr | Saint-Léonard | Automobiles, Dentists, Not Profit |
| ABP | Montréal | Tout Commerces au détail, Tout Entreprises et services |
Publicité (Desktop) Publicité (Mobile) |
| Abra Electronics Corp. | Montréal | Tout Commerces au détail, Tout Entreprises et services |
| Abra Electronique Corp | Montréal | Antennas |
| Abra-Dhesif Inc | Saint-Bruno | Abrasives |
| Abra-Kad-Abra Collection | Montréal | Beads, Tout Commerces au détail, Beads & Pearls |
| Abraham Renovation | Montréal | Home Improvement |
| Abrahim Can | Montréal | Cans |
| Abrasifs Hi-Tech Inc | Montréal | Abrasives, Tout Entreprises et services |
| Abrasifs Primex Inc | Sainte-Julie | Abrasives |
| Abrasifs Primex Molemab Inc | Sainte-Julie | Abrasives |
| Abrasifs Ubj Inc | Montréal | Abrasives |
