| 10|20 Marketing | Button Advertising | 10-twenty.ca |
| 1982 Transportation | Car & Truck Transporting Companies | — |
| 24k Auto Inc | Auto Body Shop | — |
| A P S Aviation Inc | Aviation Consultants & Services | apsaviation.ca |
| AB auto | Auto Body Shop | — |
| Abrasicorp & Equipment | Abrasives | abrasicorp.ca |
| Abrasive Technology N A Inc | Abrasives, Tout Entreprises et services | abrasive-tech.com |
| Accès pharma chez Walmart | Pharmacy | — |
| Acier Vanguard Ltée | Tout Entreprises et services | vanguardsteel.com |
| Action 500 | Tout Arts et divertissement | action500.com |
| ADVANTECH INC. | Aerospace | advantechamt.com |
| Aeroneuf Instruments Ltée | Aerospace, Aircraft Parts, Engines & Avionics | aeroneuf.com |
| AEROPORT DORVAL/MIRABEL | Blue Pages | — |
| Aerospatiale Kaycee | Aircraft Parts, Engines & Avionics | — |
| Affacturage Canada Inc. | Tout Entreprises et services | affacturage.ca |
| Air Algerie | Airline Ticket Agencies | — |
| Air Inuit (1985) Ltd | Airlines | — |
| Air Inuit Ltd | Airlines | — |
| Air Inuit Ltd | Airlines | airinuit.com |
| Air Inuit Ltée | Airlines | airinuit.com |
| AIRCRAFT EQUIPMENT & SUPPORT SERVICES | Aerospace | — |
| Airline Network Services | Airlines | — |
| Airline Services International Inc | Airlines | airlineservices.com |
| AIRNAV ELECTRONIC | Aerospace | airnav.ca |
| Airnav Électronique Ltée | Tout Entreprises et services | airnav.ca |
| Airtrades Transitaires | Tout Entreprises et services | delmarcargo.com |
| Alarme Sentinelle | Tout Entreprises et services | alarmesentinelle.com |
| Alliages Unifiés | Tout Entreprises et services | unifiedalloys.com |
| Allied Universal Security Services | Tout Entreprises et services | ausecurity.ca |
| Alta Material Handling | Tout Entreprises et services | altg.ca |
| Altrom/Auto-Camping - Dorval | Auto Body Shop Equipment & Supplies | altrom.com |
| Amacor Marketing | Tout Commerces au détail | amacor.ca |
| Amber Esthetics & Makeup Studio | Beauty & Fitness, Hairdressers & Beauty Salons | — |
| Amcor | Tout Entreprises et services | amcor.com |
| AMEC AMÉRIQUES LIMITÉE | Life Sciences and Health Technologies (LSHT) | amec.com |
| Amenzone Fitness | Fitness Gyms | — |
| American Airlines | Airlines | — |
| Ameublement Euro Style | Tout Commerces au détail | eurohousefurniture.com |
| Ameublements De Bureau Intrtch | Furniture Stores | — |
| AMS Physiotherapy & Rehabilitation Centre | Physiotherapy | amsclinic.ca |
| Anodisation Montréal Inc | Anodizing | — |
| Aqua Performa | Fitness Gyms | — |
| Arctic Glacier | Tout Entreprises et services | arcticglacier.com |
| Ares Cuisine Head Office | Appliance Manufacturers & Wholesalers | arescuisine.com |
| Armolan Furniture | Cabinet Makers | armolanfurniture.com |
| Arrow Electronics | Tout Entreprises et services | arrow.com |
| ASCO Valve Canada | Tout Entreprises et services | asco.com |
| Atelier Centre Du Pneu Groupe Unik | Tire Shop | pneuunik.com |
| Auberge St-Louis | Apartment Hotels | premieresuites.com |
| Audionova Inc. | Tout Commerces au détail | audionova.ca |
