| CenturyLink Technology Solutions | Montréal | Information Technologies (IT) |
| Cesmic Group Ltd | Brossard | Computer Room Setup, Protection, Equipment & Maintenance |
| CFMB 1280 AM/ M. TELLIDES | Montréal | Blue Pages |
| CGI | Montréal | Information Technologies (IT), Tout Informatique et internet, Computer Networking, Computer Consultants |
| CITP Database Services | Montréal | Computer Data Processing |
| CKDG | Montréal | Blue Pages |
| CLG Computer Consultants Inc. | Saint-Henri | Tout Entreprises et services |
| Clicpomme | Montréal | Tout Informatique et internet, Computer Consultants |
| 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 |
| Club PVRH Centre d'Assistance Resso... | Brossard | Tout Entreprises et services |
| Clé en main Informatique | Montréal | Computer Networking |
| Cmyktoner | Côte Saint-Luc | Computer Networking |
| Cna | Montréal | Computer Consultants |
| Co-operators Compagnie d'Assurance | Montréal | Information Technologies (IT) |
| Cocoapp | Montréal | Computer Consultants |
| Cogia | Montréal | Computer Consultants |
| Coin Acceptors Inc | Montréal | Information Technologies (IT) |
Publicité (Desktop) Publicité (Mobile) |
| Combustible | Montréal | Computer Networking |
| Commerce Montex | Montréal | Computer Room Setup, Protection, Equipment & Maintenance |
| Compumatik | Montréal | Computer Repair & Cleaning |
| Computer sciences corporation | Montréal | Information Technologies (IT) |
| Computershare Trust Company of Canada | Montréal | Information Technologies (IT) |
| Compuware Corporation of Canada | Montréal | Information Technologies (IT) |
| Conception Tekni-B | Brossard | Computer & Technology Assistance Programs |
| Connect&Go | Outremont | Computer Networking |
| Consolidated Bottle Corporation | Pointe-Claire | Bottles & Jars |
| Consolidated Bottle Corporation | Pointe-Claire | Bottles & Jars |
Publicité (Desktop) Publicité (Mobile) |
| Consulmac | Toronto | Computer Repair & Cleaning |
| Copiscope | Longueuil | Computer Accessories & Supplies |
| Corporation alimentaire Whyte's Inc. | Laval | Agri-food |
| Corporation Amerix Inc. | Repentigny | Tout Informatique et internet |
| Corporation BFC Inc | Montréal | Bankruptcy Lawyers |
| Corporation Bionetix International | Sainte-Anne-De-Bellevue | Biomedical Products |
| Corporation Caterpillar du Canada | Laval | Information Technologies (IT) |
| Corporation Conseil Bdg Inc | Laval | Chemicals |
| Corporation d'aliments Catelli | Montréal | Agri-food |
| Corporation d'Emballage International Weber | Vaudreuil-Dorion | Bottles & Jars |
Publicité (Desktop) Publicité (Mobile) |
| Corporation de Commerce Mercantile | Ahuntsic Et Cartierville | Tout Entreprises et services |
| Corporation de développement commun... | Petite-Patrie | Tout Communautés et société |
| Corporation de développement commun... | Quartier Latin Et Centre-Sud | Tout Communautés et société, Tout Informations générales |
| Corporation de développement commun... | Côte-Des-Neiges | Tout Communautés et société, Tout Informations générales |
| Corporation De Gestion Des Loisirs Du Parc | Montréal | Auditoriums & Halls |
| Corporation de l'Aménagement de la... | Verchères | Tout Communautés et société |
| Corporation de l'industrie touristi... | Longueuil | Tout Entreprises et services, Tout Tourisme et hôtels |
| Corporation De Micro-Informatique Interessante | Montréal | Cleaning & Janitorial Supplies |
| Corporation De Reliance Economique Et Co | Saint-Léonard | Associations |
| Corporation de soins de la santé Hospira | Montréal | Life Sciences and Health Technologies (LSHT) |
