| 95115465 Quebec Inc | Bagels | locations.timhortons.ca |
| 99 Nice Maintenance Cleaning Services | Cleaning Services, Cleaning Service | — |
| A & C American Chemicals Ltd | Chemicals | acamchem.ca |
| A + Solutions Home Healthcare Inc | Care Homes | aplushomecare.ca |
| A A et Fils | Flooring | facebook.com |
| A A Restaurant | Breakfast Restaurants | facebook.com |
| A Ameublement Sedna Inc | Beds | meublessedna.ca |
| A Anael Antique | Antique Dealers | — |
| A Anael Antique | Antique Dealers | anaelantique.com |
| A Architecture Inc | Architects | facebook.com |
| A Arsène Lupin Antiquités | Antique Dealers | — |
| A At Jean | at | — |
| A Aun Pied Du Bonheur | Aromatherapy | aunpieddubonheur.com |
| A B A Aluminium | Balconies | abafenestration.ca |
| A B C Cycles & Sports Ltée | Bicycle Stores | abccycles.com |
| A B C Nettoyage Industriel | Central Vacuum Systems | montrealductcleaning.com |
| A Besoin Ménage | Cleaning Services, Cleaning Service | facebook.com |
| A Brush Above | Painters | facebook.com |
| A C Forest Inc | Plumbing | braultdrain.com |
| A C L Inc | Plumbing | — |
| A C Riley Communications | Advertising Agencies | acriley.com |
| A Chabot Rénovation | Home Improvement | — |
| A Classical Landscaper | Landscaping | — |
| A Couture | Couture, COUTURE | — |
| A D Promotions | Calendars | adpromotions.ca |
| A Decor Flooring Rosemont | Flooring | — |
| A F Renovations | Home Improvement | afreno.ca |
| A Fabrice Entreprise | Bus Stations & Ticket Agencies | — |
| A Fleuriste Montréal | Artificial Flower & Plant Arrangements | fleuristemontreal.com |
| A Fortin Television Inc | Answering Machines & Equipment | facebook.com |
| A G Performance Spécialités Limitée | Auto Part Manufacturers & Wholesalers | facebook.com |
| A Inter-Pro Inc | Painters | facebook.com |
| A J M International Sports Ltd | Calendars | ajmintl.com |
| A K Aménagement Paysagiste | Landscaping | — |
| A L Paysagiste | Landscaping | — |
| A La Boutique Du Lit Electrique Internationale | Furniture Stores | — |
| A La Clinique De Denturologie Et D'Implantologie Malo Caron Et Associés | Dentists | facebook.com |
| A La Clinique Dentaire Dr Joseph Henry | Automobiles, Dentists, Not Profit | — |
| A La Clinique Dentaire St-Denis | Dentists, Service D'urgence Dentaire | alacliniquedentairestdenis.ca |
| A La Clinique Medicale Mont Royal | Medical Clinics | — |
| A M A Electrique Inc | Electricians | — |
| A M Irrigation | Landscaping | facebook.com |
| A Merulla Plomberie Inc | Plumbing | — |
| A Mu | mu | — |
| A Mucci Pépinière Inc | Christmas Trees | pepinieremucci.ca |
| A N J Electrique | Electricians | anjelectrique.com |
| A P S Aviation Inc | Aviation Consultants & Services | — |
| A Planchers Décor West-Island | Flooring | — |
| A Plus Automotive | Alternators & Starters | facebook.com |
| A Prince Entrepreneur Electricien Inc | Electricians | — |
