| Clinique Access Md | Pointe-Claire | Medical Clinics |
| Clinique Capillaire Carole Raby | Pointe-Claire | Beauty & Fitness, Hairdressers & Beauty Salons |
| Clinique Jem Santé-Multidisciplinaire | Pointe-Aux-Trembles | Massage Therapy |
| Clinique minceur Esthé Novo | Pointe-Claire | Clinics, Medical Clinics |
| Clinique Mokbel | Pointe-Claire | Medical Clinics |
| Clinique Médicale 360 | Pointe-Claire | Medical Clinics |
| Clinique Médicale D'Obésité De Pointe-Aux-Trembles | Pointe-Aux-Trembles | Not Profit, Medical Clinics |
| Clinique universitaire de la vision | Côte-Des-Neiges | Tout Commerces au détail, Tout Entreprises et services |
| Clinique Vétérinaire De La Pointe | Pointe-Aux-Trembles | Animal Medications |
| CliqueIA Tech INC | Montréal | Computer Consultants |
Publicité (Desktop) Publicité (Mobile) |
| Clorox Company of Canada Ltd. | Pointe-Claire | Tout Entreprises et services |
| Cloudops | Montréal | Tout Informatique et internet, Computer Consultants |
| CloudOps | Montréal | Computer Consultants |
| CloudOps | Montréal | Computer Repair & Cleaning |
| CLSC du Lac-Saint-Louis | Pointe-Claire | Tout Communautés et société |
| Club de patinage de vitesse de Poin... | Pointe-Aux-Trembles | Tout Arts et divertissement |
| Club Equestre des Forestiers - St-L... | Pointe-Claire | Tout Arts et divertissement |
| Clé en main Informatique | Montréal | Computer Networking |
| Clôtures Innove | Pointe-Aux-Trembles | Landscaping |
| Cm Taschereau | Pointe-Claire | cm |
Publicité (Desktop) Publicité (Mobile) |
| CMR (CIRCUITS) LTÉE | Pointe-Claire | Aerospace |
| Cmyktoner | Côte Saint-Luc | Computer Networking |
| Cna | Montréal | Computer Consultants |
| Cnf Couvreur | Pointe-Aux-Trembles | Roofing |
| Cocoapp | Montréal | Computer Consultants |
| Cogia | Montréal | Computer Consultants |
| Coiffure Balance | Pointe-Claire | Beauty & Fitness, Hairdressers & Beauty Salons |
| Coiffure Butterfly | Pointe-Claire | Beauty & Fitness, Hairdressers & Beauty Salons |
| Coiffure Esthetique Brunette | Pointe-Claire | Beauty & Fitness, Hairdressers & Beauty Salons |
| Coiffure Illusion Enr | Pointe-Calumet | Beauty & Fitness, Hairdressers & Beauty Salons |
Publicité (Desktop) Publicité (Mobile) |
| Coiffure La Pointe aux 4 Vents | Boucherville | Beauty & Fitness, Hairdressers & Beauty Salons |
| Coiffure Vivalis | Pointe-Claire | Beauty & Fitness, Hairdressers & Beauty Salons |
| Cole Freight Inc. | Pointe-Claire | Tout Entreprises et services |
| Colonial Elegance | Montréal | Tout Entreprises et services |
| Combustible | Montréal | Computer Networking |
| Comfort Inn Montreal Aeroport | Pointe-Claire | Tout Tourisme et hôtels |
| Comité ZIP Jacques-Cartier | Montréal | Tout Entreprises et services |
| Commerce Montex | Montréal | Computer Room Setup, Protection, Equipment & Maintenance |
| Commerce xp Eastern Canada | Pointe-Claire | Auctions |
| Compagnie Bicc General Cable | Saint-Jérôme | Cabling Equipment & Supplies |
Publicité (Desktop) Publicité (Mobile) |
| Compagnie Bonbon Rio Inc, La | Pointe-Aux-Trembles | Agri-food |
| Compagnie Gillette Canada | Pointe-Claire | Tout Entreprises et services |
| Compumatik | Montréal | Computer Repair & Cleaning |
| Computer sciences corporation | Montréal | Information Technologies (IT) |
| Computershare Trust Company of Canada | Montréal | Information Technologies (IT) |
| Conception Tekni-B | Brossard | Computer & Technology Assistance Programs |
| Concordia Physio Sport - Pointe-Claire | Pointe-Claire | Physiotherapy |
| Concordia Physio Sport- Pointe Claire Village | Pointe-Claire | Physiotherapy |
| Connect&Go | Outremont | Computer Networking |
| Consolidated Bottle Company | Pointe-Claire | Tout Entreprises et services |
