| Antiquite Renaissance Inc | Antique Dealers | facebook.com |
| Antiquites Encore Une Fois | Antique Dealers | facebook.com |
| Antiquites Jean-Claude Enr | Antique Dealers | — |
| Antiquites Weil | Antique Dealers | weilantique.com |
| Antiquité Nancy | Antique Dealers | nancyantiquite.e-monsite.com |
| Antiquité Zofia | Antique Dealers | facebook.com |
| Antiquités Beaumont Inc | Antique Dealers | facebook.com |
| Antiquités Brocantes André Comeau | Antique Dealers | — |
| Antiquités Cardinal | Antique Dealers | — |
| Antiquités Caroline | Antique Dealers | antique67.com |
| Antiquités Dianne M Chiasson | Antique Dealers | facebook.com |
| Antiquités R P | Antique Dealers | antiquitesrp.net |
| Antiquités Restauration Et Dorure O Dernuet& N Codsi | Antique Restoration, Refinishing & Repair | — |
| Antiquités WLA Inc | Antique Dealers | wishlistantiques.com |
| Antirouille Garage Lave Auto | Mecanique Auto | facebook.com |
| Antirouille Provincial | Auto Body Repair & Painting Shops | antirouilleprovincial.com |
| Antirouille Provincial Inc | Tout Commerces au détail | antirouilleprovincial.com |
| Anto Youssef Dr | Dentists | — |
| Antoinette Afro Coiffure | Beauty & Fitness, Hairdressers & Beauty Salons | antoinetteafrocoiffure.com |
| Anton Paar Canada | Catalogue & Online Shopping | anton-paar.com |
| Antonio Noviello | Cleaning Services, Cleaning Service | — |
| Antonio's Bella Cucina | Caterers | — |
| Antonucci Silvio | Car Repair | — |
| Anvil International Canada | Building Contractors | facebook.com |
| Aod Marketing | Advertising Agencies | — |
| Aoude Clinique Dentaire | Dentists | — |
| AP Nettoyage | Cleaning Services, Cleaning Service | — |
| AP Toitures et Fils | Roofing | — |
| AP&C Revêtements et Poudres Avancées | Aerospace | advancedpowders.com |
| AP&C Revêtements et Poudres Avancées | Aerospace | — |
| APCHQ Montréal Métropolitain | Building Contractors | apchqmontreal.ca |
| Apco Industries Co Ltd | Chemicals | apcoindustries.com |
| Apco Industries Co Ltd | Chemicals | — |
| Apex Aérospatial Inc | Aircraft Maintenance, Service & Storage | — |
| Apnair | Medical Clinics | — |
| Apnee Sante Apnea Health | Medical Clinics | — |
| Apotex | Life Sciences and Health Technologies (LSHT) | apotex.com |
| App.Art | Shopping Mall | facebook.com |
| Appalaches | Roofing | appalachesboutique.com |
| Appareil Architecture | Architects | appareilarchitecture.com |
| Appareil Electro-Médic | Appliance Repair | appareilelectromedic.ca |
| Appareil Electro-Ménager Jean-Guy Rochette Réparation | Appliance Repair & Service | electromenagers-rochette.ca |
| Appareil Electroménager Montreal | Car Repair | — |
| Appareils Electro-Ménagers Martin Inc | Appliance Repair & Service | appareilselectromartin.com |
| Appareils Electroménagers Italtech Inc | Appliance Repair & Service | — |
| Appareils Electroménagers Réparations (M) | Answering Machines & Equipment, Appliance Repair & Service | melectromenager.ca |
| Appareils Electroménagers Réparations (M) | Appliance Repair & Service | — |
| Appareils Electroménagers Réparations (M) | Appliance Repair | — |
| Appareils Electroménagers Réparations (M) | Appliance Repair | — |
| Appareils Menagers Panneplux Ltée | Appliance Repair & Service | facebook.com |
