| 10Plé | Sherbrooke | Advertising Agencies |
| 10|20 Marketing | Dorval | Button Advertising |
| 24 images | Petite-Patrie | Tout Médias montréalais |
| 37e AVENUE | Montréal | Advertising Agencies |
| 9007-8320 Québec Inc | Anjou | Advertising Agencies |
| 98,5 fm | Centre-Ville | Tout Médias montréalais |
| A C Riley Communications | Montréal | Advertising Agencies |
| A Fabrice Entreprise | Montréal | Bus Stations & Ticket Agencies |
| A Inc | Laval | Bus Stations & Ticket Agencies |
| A+Quick Socal Media Business | Montréal | Advertising Agencies |
Publicité (Desktop) Publicité (Mobile) |
| A1 Agencies Techniques | Montréal | Air Conditioning Contractors |
| Abnakaccbi | Montréal | Airline Ticket Agencies |
| ACA | Westmount | Collection Agencies |
| Académie canadienne du cinéma et de la télévision | Quartier Latin Et Centre-Sud | Tout Arts et divertissement, Tout Médias montréalais |
| Accroche Pub | Brossard | Advertising Agencies |
| ADN Laboratoire Graphique | Montréal | Advertising Agencies |
| Adoption Formons Une Famille (Société Dô) | Montréal | Adoption Agencies & Services |
| Adsplash Media | Mont-Royal | Communications & Public Relations Consultants |
| Advanced Collection Services | Montréal | Collection Agencies |
| Adven | Lasalle | Airline Ticket Agencies |
Publicité (Desktop) Publicité (Mobile) |
| Advend | Montréal | Advertising Agencies |
| Adzura | Montréal | Advertising Agencies |
| Aerogram The Aerial MEDIA Aérien | Saint-Hubert | Aerial Advertising |
| Affichage | Brossard | Advertising Agencies |
| Afrodeal | Montréal | Advertising Agencies |
| Agence & Co | Anjou | Advertising Agencies |
| Agence de Recouvrement 911 | Montréal | Collection Agencies |
| Agence De Recouvrement Cba Ltee | Montréal | Collection Agencies |
| Agence De Recouvrement Dca | Montréal | Collection Agencies |
| Agence De Recouvrement Gagnon Et Associés Inc | Montréal | Collection Agencies |
Publicité (Desktop) Publicité (Mobile) |
| Agence De Recouvrement Global | Saint-Léonard | Collection Agencies |
| Agence de Recouvrement Lasalle Inc | Montréal | Collection Agencies |
| Agence De Recouvrement Serf Inc | Anjou | Collection Agencies |
| Agence de Recouvrement Systèmes de Crédit Shellc o Ltée | Montréal | Collection Agencies |
| Agence Donaghy | Longueuil | Advertising Agencies |
| Agence FDM | Brossard | Tout Entreprises et services |
| Agence Impak Media Inc | Montréal | Advertising Agencies |
| Agence M S Enr | Montréal | Advertising Agencies |
| Agence OZ Pubilicité Communication Web | Saint-Bruno | Advertising Agencies |
| Agence Science-Presse | Montréal | Tout Enseignement et savoir, Tout Médias montréalais |
Publicité (Desktop) Publicité (Mobile) |
| Agences Sdr Agencies Inc | Montréal | Flooring |
| Ahidjo Design | Montréal | Advertising Agencies |
| Air Algerie | Dorval | Airline Ticket Agencies |
| Air Ticket Market | Montréal | Airline Ticket Agencies |
| Alcius | Longueuil | Advertising Agencies |
| Alex Média Services Inc | Montréal | Circular & Sample Distribution |
| All Oldies Radio 9 | Dollard Des Ormeaux | Tout Médias montréalais |
| AllianceOne | Montréal | Collection Agencies |
| Allianceone Ltée | Montréal | Collection Agencies |
| Alternatives | Montréal | Tout Enseignement et savoir, Tout Médias montréalais |
