| CloudMD | |
| CloudOps | Quebec |
| CloudOrbis, Inc. | |
| Cloudowl, Inc. | |
| CloudPBX, Inc. | |
| Cloudpipe, Inc. | |
| CloudPockets | British Columbia |
| Clouds Media, Inc. | |
| Cloudtric, Inc. | |
| CloudVanguard IT, Inc | |
| Cloudware Connections, Inc. | |
| Cloudwerx Data Solutions, Inc. | Alberta |
| Cloudwifi, Inc. | |
| CloudWire | Ontario |
| Clover Creations | Ontario |
| Cloverhitch Technolgies, Inc. | |
| Cloverpoint | British Columbia |
| CLPA Solutions d'affaires, inc. | Quebec |
| CLS Info | Quebec |
| Club des jeunes entrepreneurs de demain | |
| Club informatique Longueuil | Quebec |
| Club Macintosh de l'Estrie | Quebec |
| Club Plus Internet | Quebec |
| ClubRunner | Ontario |
| ClueDesign | Ontario |
| Cluep | |
| Cluep, Inc. | Ontario |
| Cluster Informatique | |
| Cluster Systems & Technologies, Inc. | Quebec |
| Clutch Marketing, Inc. | Ontario |
| CM Tech Canada, Inc. | |
| cm3 | Ontario |
| CMC Electronics, Inc. | |
| CMC Microsystems | Ontario |
| CMCC Global | |
| CMENT | Ontario |
| CMEOW | Ontario |
| CMG Computing Services | |
| CMI | Ontario |
| CMiC | Ontario |
| CMLabs Simulations, Inc. | Quebec |
| CMO IT Services | British Columbia |
| CMOR Group Corporation | |
| CMR Summit Technologies | Quebec |
| CMS Buffet | Ontario |
| CMS Consulting, Inc. | New Brunswick |
| CMS Critic | Alberta |
| CMS Made Simple | |
| CMS Montera | Ontario |
| CMS Security | |