| Centre d'Affaires du Vieux Longueuil C A V L Inc | Longueuil | Business Centres |
| Centre D'Affaires Nobert | Longueuil | Business Centres |
| Centre D'Affaires St-Charles | Longueuil | Business Centres |
| Centre De Ressources Et Promotions Boucher Inc | Montréal | Advertising Agencies |
| Centre Express de Service pour Autocars de Montréal CESAM | Montréal | Bus, Coach & Minibus Repair & Service |
| Centre Hospitalier Bussey | Lachine | Blue Pages, Hospitals |
| CENTURY 21 KAFENA | Dollard Des Ormeaux | Home Decoration & Maintenance, Real Estate Agencies / Agents |
| Cepac Communication | Saint-Lambert | Advertising Agencies |
| CGC Collection Group of Canada | Montréal | Collection Agencies |
| Chaaban Transport Inc | Laval | Bus & Coach Rental & Charter |
Publicité (Desktop) Publicité (Mobile) |
| Chambre De Commerce Panamericaine Inc. Cape | Montréal | Advertising Agencies |
| Champlain Avocats | Montréal | Business Lawyers |
| Charbonneau Nathalie | Saint-Lambert | Business Lawyers |
| Charka Advertising Inc | Montréal | Advertising Agencies |
| Charlenegendron | Montréal | Advertising Agencies |
| Cine Cite Montreal | Saint-Hubert | Business Centres |
| Cinémotion | Montréal | Advertising Agencies |
| Club Courrier | Montréal | Bus & Coach Rental & Charter |
| Club M&A Québec | Montréal | Business Brokers |
| Club Voyages Atlantic | Montréal | Airline Ticket Agencies |
Publicité (Desktop) Publicité (Mobile) |
| Club Voyages Lachenaie | Terrebonne | Airline Ticket Agencies |
| Club Voyages Raymonde Potvin | Ste-Catherine | Airline Ticket Agencies |
| Club Voyages Solaris | Pont-Viau | Airline Ticket Agencies |
| Club Voyages Tourbec | Montréal | Airline Ticket Agencies |
| Clément Davignon | Montréal | Business Lawyers |
| CMR Promo | Mount-Royal | Business & Trade Organizations |
| Co-operators Assurance Et Services Financiers | Brossard | Business Insurance |
| Cobra Collection | Montréal | Collection Agencies |
| Codecpro | Montréal | Business Centres |
| Coligramhq | Montréal | Bus & Coach Rental & Charter |
Publicité (Desktop) Publicité (Mobile) |
| Collection Charleen | Montréal | Collection Agencies |
| Collection La Marque | Montréal | Collection Agencies |
| CommDesign | Montréal | Advertising Agencies |
| Communicor | Westmount | Advertising Agencies |
| Complexe St-Charles Inc | Longueuil | Business Centres |
| Comptabilité CG | Longueuil | Advertising Agencies |
| Comunika | Montréal | Advertising Agencies, Tout Entreprises et services |
| Confection Qlt | Montréal | Business & Trade Organizations |
| Conseillère En Orientation Et Psychologue Monique Bussière Enr | Montréal | Career Counselling |
| Consulmaxx | Montréal | Advertising Agencies |
Publicité (Desktop) Publicité (Mobile) |
| Consultant Marina Inc | Outremont | Business Brokers |
| Contxtful | Montréal | Advertising Agencies |
| Copies 2k | Montréal | Business & Trade Organizations |
| Corposult | Montréal | Business Lawyers |
| Cossette | Montréal | Advertising Agencies |
| Coup D'Pub | Montréal | Advertising Agencies |
| Cour municipale | Longueuil | Business Centres |
| Courtier d'affaires Sunbelt Montréal | Montréal | Business Brokers |
| Courtiers Multi Plus Inc | Montréal | Business Insurance |
| Creations Mystik | Longueuil | Business Centres |
