| Cheveux Extrêmes Inc | Westmount | Beauty & Fitness, Hairdressers & Beauty Salons |
| Cheveux Extrêmes/Extreme Hair | Westmount | Beauty Salon Equipment & Supplies |
| Chez Nick | Westmount | Tout Bars et restaurants |
| Chubikphysio | Westmount | Physiotherapy |
| Cine Cite Montreal | Saint-Hubert | Business Centres |
| Clinique Dentaire Claremont | Westmount | Dentists |
| Clinique dentaire NDG-Westmount | Notre-Dame-De-Grâce | Tout Entreprises et services |
| Clinique Esthétique Et Coiffure Dermadiba | Westmount | Beauty & Fitness, Hairdressers & Beauty Salons |
| Clinique Intersanté Westmount | Westmount | Health Services |
| Clinique Mocca | Westmount | Health and Beauty |
Publicité (Desktop) Publicité (Mobile) |
| Club de Boulingrin de Westmount Lawn Bowling C lub | Westmount | Bowling |
| Club M&A Québec | Montréal | Business Brokers |
| Clément Davignon | Montréal | Business Lawyers |
| CMR Promo | Mount-Royal | Business & Trade Organizations |
| Co-operators Assurance Et Services Financiers | Brossard | Business Insurance |
| Coach Luxury | Westmount | Tout Commerces au détail |
| Codecpro | Montréal | Business Centres |
| Coiffure Jean John | Westmount | Beauty & Fitness, Hairdressers & Beauty Salons |
| Collage Pediatric Therapy | Westmount | Medical Clinics |
| Collège International de Marcelline | Westmount | Tout Enseignement et savoir |
Publicité (Desktop) Publicité (Mobile) |
| Collège Unica | Westmount | Tout Enseignement et savoir |
| Communicor | Westmount | Advertising Agencies |
| Complexe St-Charles Inc | Longueuil | Business Centres |
| Confection Qlt | Montréal | Business & Trade Organizations |
| Consultant Marina Inc | Outremont | Business Brokers |
| Copies 2k | Montréal | Business & Trade Organizations |
| Corbin Therapeutics Inc. | Square | Life Sciences and Health Technologies (LSHT) |
| Corbin thérapeuthique | Montréal | Life Sciences and Health Technologies (LSHT) |
| Cornell Trading Ltd. | Westmount | Tout Commerces au détail |
| Corporatek | Westmount | Tout Informatique et internet |
Publicité (Desktop) Publicité (Mobile) |
| Corporation Financiere MR | Westmount | Tout Entreprises et services |
| Corposult | Montréal | Business Lawyers |
| 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 |
| Creechurch International Underwriters Ltd | Montréal | Business Insurance |
| Croteau Nathalie | Montréal | Business Lawyers |
| Crowe BGK | Westmount | Tout Entreprises et services |
| Cuir Albert | Montréal | Business Centres |
Publicité (Desktop) Publicité (Mobile) |
| Customervibe | Montréal | Business Centres |
| Dannyco Trading | Montréal | Business & Trade Organizations |
| Datafarm | Montréal | Business Centres |
| Date DechoixCom | Montréal | Business Centres |
| Davicci | Westmount | Boutiques |
| Dawson College | Westmount | Tout Enseignement et savoir |
| Daytrader Canada Inc. | Brossard | Business & Trade Organizations |
| Decalco Design | Longueuil | Business Centres |
| Decarel Inc. | Westmount | Tout Entreprises et services |
| Dentons Canada LLP | Montréal | Business Lawyers |
