| Agence PID | Clothes Lines | facebook.com |
| Agropur | Agri-food, Cheese | agropur.com |
| Ah Mi Ma So | so | — |
| Air Péloquin Inc. | Tout Entreprises et services | airpeloquin.com |
| Airco Den Bec | Air Conditioning Systems & Parts | facebook.com |
| Airgel Inc | Air Conditioning Contractors | — |
| Airmec Climatisation | Air Conditioning Contractors | facebook.com |
| Airomax | Tout Entreprises et services | airomaxmr.ca |
| Airteck Propulsion | Air Conditioning Contractors | — |
| Akilon Technologies Inc | Computer Networking | facebook.com |
| Alain Berthiaume CPA Inc | Bookkeeping Software & Accounting Systems | facebook.com |
| Alcius | Advertising Agencies | facebook.com |
| Alea Coiffure Inc | Beauty & Fitness, Hairdressers & Beauty Salons | aleacoiffure.com |
| Alejandra Ibarra Acupuncture | Acupuncturists | — |
| Alexandre Germain | Business Lawyers | hglavocats.com |
| Alia N Tangay | Clothing Stores | facebook.com |
| Alimentation Raymond Drouin Inc | Not Profit, Grocery Stores | carylbakervisage.com |
| Aliments du Québec | Tout Commerces au détail, Tout Entreprises et services | alimentsduquebec.com |
| Aliments Krispy Kernels Inc | Chips | — |
| Aliments Krispy Kernels Inc. | Agri-food | www3.krispykernels.com |
| Aliments Ultima | Agri-food | ultimayog.ca |
| Aliments Ultima Inc | Agri-food | ultimayog.ca |
| Alliance Santé Soutien a Domicile | Care Homes | alliancesante.ca |
| alterfina | Tout Entreprises et services | alterfina.ca |
| Aluminium Alouette Inc | Aluminum | aluminiumalouette.com |
| Aluminium DP | Aluminum Products | aluminiumdp.com |
| Aluminium Walker | Tout Entreprises et services, Balconies | aluminiumwalker.ca |
| Alégoria Beauté-Santé-Détente | Beauty & Fitness, Hairdressers & Beauty Salons | — |
| Am Beauty | Beauty & Health Spas | facebook.com |
| Ameublement Abr | Furniture Stores | facebook.com |
| Amiante Proconsult Inc | Asbestos Removal & Abatement | amiantelabo.com |
| Amicom Inc | Business Centres | facebook.com |
| Aménagement Gopelouse | Landscaping | facebook.com |
| Aménagement GoPelouse | Landscaping | gopelouse.com |
| Aménagement Paysager Artifex Inc | Landscaping | amenagementpaysagerartifex.com |
| Ancrage Féminin | Massage Therapy | — |
| Andre Couture | Couture, COUTURE | — |
| Andre Poulin | Building Contractors | facebook.com |
| André Cycle & Sport Inc | Tout Commerces au détail | andrecyclesport.com |
| André Cycle Sport Inc | Bicycle Stores | andrecycle.com |
| Andrée Lacourse Massothérapie-Approche Ostéopathique | Massage Therapy | — |
| Angelika Voyance | Astrologers & Psychics | — |
| Angélique-Voyance | Astrologers & Psychics | angelique-voyance.com |
| Animation Gonflable | Computer Graphics Design & Animation | animationgonflable.com |
| Anna Lai Pu | pu | — |
| Annie Sleeth Hypnose Plus | Tout Entreprises et services | hypnoselongueuil.ca |
| Appartements Terrasse De Sérigny | Apartment Rental | facebook.com |
| Appliance Parts Club | Appliance Parts & Supplies | clubdepieces.com |
| Arboquébec | Tout Entreprises et services | arboquebec.com |
| Arboreta Internet Services | Business Centres | facebook.com |
