| Alexsia et Maurice Voyance | Astrologers & Psychics | alexsicamauricevoyance.ca |
| Alextreme Câblage | Cabling Equipment & Supplies | — |
| Alibi | Boots | facebook.com |
| Alix Service D'électroménagers | Appliance Repair & Service | — |
| Alliance Acoustique | Architectural & Construction Specifications | allianceacoustique.com |
| Alliance Magnesium | Life Sciences and Health Technologies (LSHT) | alliancemagnesium.com |
| ALT Hotel | Shopping Mall | althotels.ca |
| Altrom/Auto-Camping - Brossard | Auto Body Shop Equipment & Supplies | altrom.com |
| Aluminium André Gagnon | Aluminum | — |
| Aluminium E. Delaunais | Aluminum | — |
| Aluminium Notre-Dame | Aluminum Fabricators, Aluminum Products | al-nd.com |
| Aluminium Notre-Dame | Aluminum Fabricators | — |
| Amenagement Ete-Hiver S.E.N.C | Carpet Installers | — |
| American Eagle & Aerie | Clothing Manufacturers & Wholesalers | storelocations.ae.com |
| Ameublements Du Vieux St-Jean | Tout Commerces au détail | ameublementst-jean.com |
| AMICO DRAMEX | Tout Entreprises et services | amicoquebec.com |
| Amnesia | Tout Commerces au détail, Shopping Mall | amnesiashop.com |
| Amphenol Air LB North America, Inc | Tout Entreprises et services | amphenolpcd.com |
| Ana Patricia Cardoso de Souza Podologue | Chiropodists | facebook.com |
| ANDI GROUP INC. | Architectural & Construction Specifications | andigroup.ca |
| Andong Wang, Artist | Art Galleries, Dealers & Consultants, Artists | facebook.com |
| André Lemieux Climatisation | Air Conditioning Contractors | — |
| André Primeau Vélo Inc | Bicycle Stores | — |
| Anges Gardiens | Animal Breeders | angesgardiens.ca |
| Animaliere Amr | Animal Shelters & Protection Services | — |
| Animation Du Charme | Balloons | — |
| Anne Marie Ferlain Artisan Verrier | Arts & Crafts Stores | — |
| Annie Wu | wu | — |
| Anz Inc | Shopping Mall | facebook.com |
| Appareils Électroménagers 713 | Appliance Parts & Supplies | — |
| Appartements du Fleuve | Apartment Rental, Apartments | appartementsdufleuve.com |
| Appel à recycler | Life Sciences and Health Technologies (LSHT) | appelarecycler.ca |
| Apple DIX30 | Antennas | apple.com |
| April Consultant Services d'Evaluation | Appraisers | facebook.com |
| Arbres Montréal, Inc | Tout Entreprises et services | arbresmontreal.ca |
| Archambault Fontaine | Dentists | — |
| Archerie L'Arcteck Archery | Archery & Crossbows, Archery & Crossbow Equipment & Supplies | — |
| Archerie L'Arcteck Archery | Archery & Crossbows, Archery & Crossbow Equipment & Supplies | arcteckarchery.com |
| Ardecom Inc. | Tout Entreprises et services | ardecom.com |
| Aritmetik | Boutiques | facebook.com |
| Armando Lanzarotti Salon Picasso | Beauty & Fitness, Hairdressers & Beauty Salons | facebook.com |
| Armoires Duncan | Cabinet Makers | — |
| Armoires E M M Design | Cabinet Makers | emmdesign.ca |
| Armoires et Plomberie Bachand Inc | Bathroom Renovations | constructionbachand.com |
| Art Et Coiffure Aline Myara | Beauty & Fitness, Hairdressers & Beauty Salons | facebook.com |
| Art-Tech | Aluminum Products | — |
| Artemano | Furniture Stores | artemano.ca |
| Artisan Chaisier | Caning | artisanchaisier.ca |
| Artisanat Gold Art Inc | Arts & Crafts Supplies, Arts & Crafts Materials & Supplies | facebook.com |
| As As Systemes D Accrochage | Shopping Mall | — |
