| Clinique Du Boise | Repentigny | Medical Clinics |
| Clinique Médicale des Affluents | Repentigny | Medical Clinics |
| Clinique Médicale L.g. | Repentigny | Medical Clinics |
| Clinique Médicale L.g. | Repentigny | Medical Clinics |
| Clinique NL | Repentigny | Chiropodists |
| Clinique Orthodontique Venne | Repentigny | Medical Clinics |
| Clinique Physio-Ostéo + | Repentigny | Physiotherapy |
| Clinique Santé Lanaudière | Repentigny | Medical Clinics |
| CliqueIA Tech INC | Montréal | Computer Consultants |
| Cloudops | Montréal | Tout Informatique et internet, Computer Consultants |
Publicité (Desktop) Publicité (Mobile) |
| CloudOps | Montréal | Computer Consultants |
| CloudOps | Montréal | Computer Repair & Cleaning |
| Clé en main Informatique | Montréal | Computer Networking |
| Clôture Summum | Repentigny | Tout Entreprises et services |
| Cmyktoner | Côte Saint-Luc | Computer Networking |
| Cna | Montréal | Computer Consultants |
| Cocoapp | Montréal | Computer Consultants |
| Cogia | Montréal | Computer Consultants |
| Combustible | Montréal | Computer Networking |
| Commerce Montex | Montréal | Computer Room Setup, Protection, Equipment & Maintenance |
Publicité (Desktop) Publicité (Mobile) |
| Communication Idéale Inc. | Repentigny | Tout Entreprises et services |
| Communications Idéales Inc. | Repentigny | Tout Commerces au détail |
| Compagnie Bicc General Cable | Saint-Jérôme | Cabling Equipment & Supplies |
| Compass Minerals Canada Corp | Repentigny | Agri-food |
| Compresseurs G D G Inc Les | Repentigny | Compressors |
| 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 |
| Connect&Go | Outremont | Computer Networking |
Publicité (Desktop) Publicité (Mobile) |
| Construction Nicolas Neveu | Repentigny | Home Improvement |
| Consulair | Repentigny | Life Sciences and Health Technologies (LSHT) |
| Consulmac | Toronto | Computer Repair & Cleaning |
| Coopérative de Solidarité Havre du Petit Village | Repentigny | Co-operative Organizations |
| Copiscope | Longueuil | Computer Accessories & Supplies |
| Corporation Amerix Inc. | Repentigny | Tout Informatique et internet |
| Cours de danse Repentigny | Repentigny | Tout Enseignement et savoir |
| Couvre-Planchers Gagnon Inc | Repentigny | Ceramic Tile Dealers |
| Creative Imaging | Montréal | Computer Graphics Design & Animation |
| CST Consultants | Montréal | Computer Consultants |
Publicité (Desktop) Publicité (Mobile) |
| Cuisines Tech Profab Inc | Repentigny | Kitchen Cabinets |
| Curves | Repentigny | Fitness Gyms |
| Cyberlogic | Montréal | Computer Repair & Cleaning |
| Cyberlogic | Montréal | Computer Repair & Cleaning |
| Cybershift Inc | Repentigny | Information Technologies (IT) |
| Câblage Expert | Sainte-Rose | Cabling Equipment & Supplies |
| Câblage FB Enrg | Auteuil | Cabling Equipment & Supplies |
| Câblage Filotech | Pointe-Aux-Trembles | Cabling Equipment & Supplies |
| Câblages Syl-Tech | Sainte-Catherine | Cabling Equipment & Supplies |
| Darwin Dimensions Inc | Montréal | Computer Graphics Design & Animation |
