| Apotex | Montréal | Life Sciences and Health Technologies (LSHT) |
| Appareil Auditif Ile Des Soeurs - Hearing Aids & Hearing Test | Verdun | Audiologists |
| Appel à recycler | Brossard | Life Sciences and Health Technologies (LSHT) |
| APPMED inc. | Michelin | Life Sciences and Health Technologies (LSHT) |
| Aptimed | Louis-Riel | Life Sciences and Health Technologies (LSHT) |
| AptoChem | Laval | Life Sciences and Health Technologies (LSHT) |
| Aqua Massothérapie | Montréal | Health and Beauty |
| Aqua Viva | Montréal | Plumbing |
| Aqua-Elle | Laval | Health and Beauty |
| Aquabrass Inc | Montréal | Plumbing |
Publicité (Desktop) Publicité (Mobile) |
| Aquaduct Plumbing And Heating | Montréal | Plumbing |
| Aqualine Plumbing Montréal | Montréal | Plumbing |
| AquaRehab | Laval | Life Sciences and Health Technologies (LSHT) |
| Aquarius Perfect Body Zone | Pointe-Claire | Health and Beauty |
| Aquartis | Beloeil | Life Sciences and Health Technologies (LSHT) |
| Aquatech, Societé de gestion de l'eau | Montréal | Life Sciences and Health Technologies (LSHT) |
| Arboretum Morgan | Sainte-Anne-De-Bellevue | Tout Tourisme et hôtels |
| Archimed Médical | Gabriel-Gendron | Life Sciences and Health Technologies (LSHT) |
| Ares Cuisine Head Office | Dorval | Appliance Manufacturers & Wholesalers |
| ARJ Construction | Pointe-Aux-Trembles | Plumbing |
Publicité (Desktop) Publicité (Mobile) |
| Armonia Médico Esthétique | Montréal | Health Services |
| Armstrong Darling Inc | Anjou | Plumbing |
| Arrondissement du Sud-Ouest | Saint-Henri | Tout Informations générales |
| ARTEC TECHNOLOGIES | Montréal | Aerospace |
| Arthro Vision Inc. | Québec | Life Sciences and Health Technologies (LSHT) |
| ArthroLab Inc. | Montréal | Life Sciences and Health Technologies (LSHT) |
| Artistri Sud | Saint-Henri | Tout Communautés et société |
| Ascenseurs Savaria Concord | Laval | Life Sciences and Health Technologies (LSHT) |
| Ascenseurs Savaria Concord Inc. | Montréal | Life Sciences and Health Technologies (LSHT) |
| ASEQ Alliance Pour La Santé Étudiante Au Québec | Montréal | Health Services |
Publicité (Desktop) Publicité (Mobile) |
| Asplundh Canada | Terrebonne | Life Sciences and Health Technologies (LSHT) |
| Assista Medical | Hall | Life Sciences and Health Technologies (LSHT) |
| Association De Médecine Manuelle Du Québec | Montréal | Alternative Health |
| Association des conseillers en hébe... | Ahuntsic Et Cartierville | Tout Entreprises et services |
| Association des Hypnologues du Québec (1977) | Montréal | Alternative Health |
| Association des ressources interméd... | Quartier Latin Et Centre-Sud | Tout Communautés et société |
| Association Libérale Henri Bourassa | Montréal | Associations |
| Association Touristique des Laurent... | Mirabel | Tout Tourisme et hôtels |
| Assure Santé Inc | Montréal | Health Services |
| AST Clinical solutions | Laval | Life Sciences and Health Technologies (LSHT) |
Publicité (Desktop) Publicité (Mobile) |
| AST Clinical solutions | Albert-Einstein | Life Sciences and Health Technologies (LSHT) |
| Astleywilk Healthcare Inc | Saint-Constant | Beauty & Fitness, Hairdressers & Beauty Salons |
| Astral Internet | Brossard | Tout Informatique et internet |
| AstraZeneca Canada | Longueuil | Life Sciences and Health Technologies (LSHT) |
| Atanas Plomberie Et Chauffage | Montréal | Plumbing |
| Atanas-Plumbing & Heating | Montréal | Plumbing |
| Atek Canada | Montréal | Tout Informatique et internet |
| Ateliers Mobiles Compagnie Centrale de Plomberie & Chauffage (1981) Co Ltée | Montréal | Plumbing |
| Ateliers pour la biodiversité | Saint-Henri | Tout Communautés et société, Tout Enseignement et savoir, Tout Entreprises et services |
| Ates Médical Inc. | Saint-Bruno | Life Sciences and Health Technologies (LSHT) |
