| AstroSpica | Astrologers & Psychics | — |
| AstroVac - VacuMaid | Central Vacuum Systems | vacumaid.ca |
| Astucemédia Inc | Computer Graphics Design & Animation | irrigationdirect.ca |
| Astuciel Inc. | Accounting Services | facebook.com |
| Asurion | Call Centres | — |
| Asus | Computer & Technology Assistance Programs | — |
| Atanas Plomberie Et Chauffage | Plumbing | — |
| Atanas-Plumbing & Heating | Plumbing | facebook.com |
| Atanaze Entretien Ménager | Cleaning Services, Cleaning Service | — |
| Atd Design & Manufacturing Services Inc. | Aircraft Parts, Engines & Avionics | — |
| Atek Canada | Tout Informatique et internet | atek.ca |
| Atelier 739 | Arts & Crafts Stores | — |
| Atelier A | Cabinet Makers | — |
| Atelier Anaka | Beds | atelieranaka.com |
| Atelier Audio | Audiovisual Equipment & Supplies | — |
| Atelier B | Cement Finishing | atelierb.ca |
| atelier b | Boutiques | atelier-b.ca |
| Atelier Babachic | Antique Restoration, Refinishing & Repair | atelierbabachic.com |
| Atelier Barda | Tout Entreprises et services, Architects | atelierbarda.com |
| Atelier Big City | Tout Entreprises et services | atelierbigcity.com |
| Atelier Bohica | All-Terrain Vehicles | — |
| Atelier Boudine | Arts & Crafts Stores | facebook.com |
| Atelier Bourbonnière Inc | Kitchen Cabinets | atelierbourbonniere.com |
| Atelier Bécyk | Bicycle Stores | facebook.com |
| Atelier Calixa | Artists | — |
| Atelier Cambium, Ébénisterie | Home Improvement | facebook.com |
| Atelier Circulaire | Tout Enseignement et savoir | ateliercirculaire.org |
| Atelier Circulaire Inc | Arts & Crafts Classes & Schools | ateliercirculaire.org |
| Atelier Clark - Centre Clark | Tout Commerces au détail | centreclark.com |
| ATELIER COIFFURE ET ESTHETIQUE (L) | Beauty & Fitness, Hairdressers & Beauty Salons | lateliercoiffureesthetique.com |
| Atelier D'Architecture Vely | Architects | ateliervely.com |
| Atelier d'art 448 | Tout Enseignement et savoir | 448.ca |
| Atelier D'Art Colorys | Art Schools | artcolorys.com |
| Atelier D'Art Graphique Interligne Inc | Artists | — |
| Atelier d'art Jeannine Bêty | Art Schools | facebook.com |
| Atelier d'histoire de la Pointe-aux... | Tout Enseignement et savoir, Tout Informations générales | histoirepat.com |
| Atelier d'Horlogerie Peich | Clocks | francescpeich.com |
| Atelier D'Insonorisation Du Québec | Kitchen Cabinets | — |
| Atelier Dame Plume | Calligraphy & Calligraphers | dameplume.com |
| Atelier De Bois | Antique Restoration, Refinishing & Repair | — |
| Atelier de Brésoles | Arts & Crafts Classes & Schools, Tout Enseignement et savoir | atelierdebresoles.com |
| Atelier De Daria Centro Canada | Furniture Stores | facebook.com |
| Atelier De Joaillerie Arterria | Art Galleries, Dealers & Consultants | lauriedansereau.com |
| Atelier De Mecanique C P | Auto Body Repair & Painting Shops | — |
| Atelier de Reliure Catherine Gaumerd | Bookbinders | reliure.quebec |
| Atelier De Reliure Cécile Côté | Bookbinders | — |
| Atelier de Réparation Roméo Enr | Appliance Repair & Service | reparateurelectromenagermontreal.com |
| Atelier De Tapis Persans Et Orientaux | Carpet & Rug Cleaning | facebook.com |
| Atelier du geste | Art Schools | atelierdugeste.qc.ca |
| Atelier Du Presse-Citron | Computer Graphics Design & Animation | — |
