| Aventure Salle De Réception | Auditoriums & Halls | — |
| Avenue Code | Information Technologies (IT) | — |
| Avenue Design | Tout Commerces au détail | avenuedesigncanada.com |
| Avenue du Parc SHELL 1987 Enr. | Automobiles | — |
| AVERNA TECHNOLOGIES INC. | Aerospace | averna.com |
| AVEX Cleaning Services | Cleaning Services, Cleaning Service | — |
| Avexel Cleaning Services | Cleaning Services, Cleaning Service | facebook.com |
| AVI-SPL Canada Ltd | Information Technologies (IT) | avispl.com |
| Aviation Led | Aircraft Maintenance, Service & Storage | facebook.com |
| AVIATRON INC. | Aerospace | aviatron.com |
| Avid | Tout Informatique et internet | avid.com |
| Avid Technology | Information Technologies (IT) | avid.com |
| Avid Technology | Information Technologies (IT) | — |
| AVITEC (OUTILLAGES) INC. | Aerospace | avitecnet.com |
| Aviva Canada | Car Insurance | — |
| Avnet Canada Inc. | Tout Entreprises et services | avnet.com |
| Avnet International (Canada) Ltd | Information Technologies (IT) | avnet.com |
| Avocat Montréal | Tout Entreprises et services | avocat-montreal.ca |
| Avocatpenda.ca | Business Lawyers | avocatpenda.ca |
| Avocats Lauzon | Business Lawyers | lauzonavocats.com |
| Avocats Montpetit-Vaillancourt | Bankruptcy Lawyers | — |
| AVON Isabelle | Catalogue & Online Shopping | — |
| AVVA Demenagement | Moving Companies | — |
| Awada Ali Garage | Garage Auto | — |
| Awake Coding Consulting Inc | Shopping Mall | facebook.com |
| Axam Electrique | Electricians | — |
| Axelle Patrigeon Massothérapie | Massage Therapy | axellepatrigeon.com |
| Axionable | Information Technologies (IT) | — |
| Axiotech | Computer Repair & Cleaning | — |
| Axismodal | Alternative Health | facebook.com |
| Axispress | Catalogue & Online Shopping | — |
| Axon Intégration et Développement | Information Technologies (IT) | axon-id.com |
| Axor | Life Sciences and Health Technologies (LSHT) | axor.com |
| Axp Assurances | Car Insurance | axpassurances.ca |
| AXUM Barbershop | Barbers, Men's Hairdressers & Barber Shops | axumbarbershop.com |
| Axxium Vision | Life Sciences and Health Technologies (LSHT) | axxium.ca |
| Ayoud Darwish Remax | Appraisers | — |
| Az Services | Accountants | — |
| AZ Services Comptables | Accountants | facebook.com |
| Azelle | Artists | — |
| Azita Papaie Physiotherapeute | Physiotherapy | azitapapaiephysio.com |
| Azran Avocats | Tout Entreprises et services | azran.ca |
| Azur Centre Contact | Call Centres | — |
| Azur espace Coiffure Suite 235 | Beauty & Fitness, Hairdressers & Beauty Salons | — |
| Azzimov Mobile Inc | Catalogue & Online Shopping | azzimov.com |
| Aéro MAG 2000 | Tout Entreprises et services | aeromag.ca |
| Aéro Montréal | Tout Entreprises et services | aeromontreal.ca |
| Aéro Mécachrome Inc. | Tout Entreprises et services | mecachrome.com |
| Aéro Portail | Airlines | aeroportail.ca |
| B & H Inc | Landscaping | — |
