| Art-G | Architectural Drawing | — |
| Art-school Impression | Art Schools | — |
| Artcom Société De Commercialisation Ltée | Advertising Agencies | facebook.com |
| Artemano | Furniture Stores | — |
| Artemano Canada | Furniture Stores | artemano.ca |
| Artemano Canada | Furniture Stores | facebook.com |
| Artglass Windshield Replacements & Repairs | Auto Glass & Windshields | — |
| Articles Publicitaires Sherman | Shopping Mall | facebook.com |
| Artisanat St-Rose | Furniture Stores | artisanatsterose.com |
| Artopex | Tout Commerces au détail | artopex.com |
| Arts et Pinceaux | Art Materials & Supplies | — |
| Asbex | Asbestos Removal & Abatement | — |
| Ascenseurs Savaria Concord | Life Sciences and Health Technologies (LSHT) | savaria.com |
| ASPIDA TIS ATHINAS (Services) | Blue Pages | — |
| Aspirmatic | Cleaning Services, Cleaning Service | facebook.com |
| Assemblages Mé-Ka Inc | Assembly & Fabricating Services | facebook.com |
| Association De Rencontres Culturelles Avec Les Détenus | Associations | arcad-qc.ca |
| Association Iris | Associations | facebook.com |
| Association Lavalloise Pour Les Arts Plastiques | Arts & Cultural Organizations & Centres | alpap.org |
| Association Libérale Du Comté De Mille-Iles | Associations | — |
| Association Midi-Quarante Inc. | Tout Entreprises et services | assmq.com |
| Association Motocycliste de Laval | Tout Arts et divertissement, Tout Communautés et société | amlaval.org |
| Assurance Auto Du Québec | Car Insurance | facebook.com |
| Assurances Andréanne Dubois Inc. | Car Insurance | andreannedubois.com |
| AST Clinical solutions | Life Sciences and Health Technologies (LSHT) | corealispharma.com |
| ASTOR CANDLES | Commerce / Retailers | — |
| ATCO Distributions | Compressors | — |
| Atelier Bois et Couleurs , Laval | Arts & Cultural Organizations & Centres | — |
| Atelier D'Auto Rive Nord Inc | Car Remote Starters | vitroplus.com |
| Atelier De Couture Stefani | Clothing Alterations | — |
| Atelier de Débosselage André Enr | Auto Body Shop | — |
| AtGen Canada | Life Sciences and Health Technologies (LSHT) | atgenglobal.com |
| ATHLETIC AND YOUTH CENTER/Hell. Comm. Montreal | Blue Pages | hellenesmontreal.org |
| ATI Conception & Automatisation Inc | Automation Systems & Equipment | ati-automation.com |
| Atlantis Inc. | Tout Commerces au détail | atlantisstrength.com |
| Atlas Gym | Fitness Gyms | atlasgym.ca |
| Atlas Ideal Metal Inc | Shopping Mall | facebook.com |
| Atlas Traiteur | Caterers | facebook.com |
| ATM Doctor Inc | Automated Teller Manufacturers & Wholesalers | — |
| Ats Solution Auto | Automobiles, car Dealers | facebook.com |
| AU VIEUX DULUTH Restaurant | Food / Distributors | auvieuxduluth.com |
| Auberge Zen Pour Animaux | Animal Shelters & Protection Services | aubergezen.com |
| Aubut & Beauregard Vitres d'autos | Car Remote Starters | aubutetbeauregard.ca |
| Audio-Vidéo-Photo G S T | CD & DVD Duplication | facebook.com |
| Audiologie Laval | Audiologists | — |
| Audiologie Le Carrefour | Audiologists | cliniqueauditivebougie.ca |
| Audix Entertainment | Audiovisual Equipment & Supplies, Audiovisual Production Services | audixentertainment.ca |
| Audrey Vision Future | Astrologers & Psychics | facebook.com |
| Augusta De Sa | sa | — |
| Auper Electronique Inc | Commercial Kitchen Equipment | auper.com |
