| Cégep Limoilou - Techniques de l'informatique - Développement d'applications | Quebec |
| Cégep Marie-Victorin | |
| Cégep Saint-Jean-sur-Richelieu | |
| Cégep Saint-Jean-sur-Richelieu - Techniques de l'informatique | Quebec |
| Cégep Sorel-Tracy | |
| Ceilidh Connection | Nova Scotia |
| CEl Aerospace | |
| Celayix | British Columbia |
| Celco Controls Ltd | Manitoba |
| Celero | Alberta |
| Celestial Systems, Inc. | |
| Celestica, Inc. | Ontario |
| Celibec Informatique | Quebec |
| Cell.ca Wireless Communications | Manitoba |
| Cellar Door Games | Ontario |
| Cellard Software Canada | Quebec |
| Cellatfix | |
| CellCarta | Quebec |
| CellClinic.ca | |
| Cellcom Communications | |
| Cellect Laboratories, Inc. | |
| CellPhoneRepairCourse.com | Ontario |
| Cellphones.ca | Alberta |
| CellSell | Quebec |
| CellStore Software, Inc. | |
| Cellula | |
| Cellula Robotics | |
| Cellulaire Chic | Quebec |
| Cellulaire Marketing | |
| Cellularmall.net | Ontario |
| CellularPoint | Ontario |
| Cellution | Quebec |
| CellWand Communications, Inc. | Ontario |
| Cellzone | Quebec |
| Celter Technologies | Alberta |
| Celtic House Venture Partners, Inc. | Ontario |
| Celtx | Newfoundland and Labrador |
| Cemblend Systems, Inc. | Alberta |
| CEMWorks, Inc. | Manitoba |
| Cence Power | |
| CENCOM | Ontario |
| Cencomp Systems Solutions, Inc. | Alberta |
| Cendec Systems | Alberta |
| Cendirect | Quebec |
| Cenera, Inc. | |
| Centech | Quebec |
| Centennial College | Ontario |
| Center Of Digital Excellence C.O.D.E. | |
| Centerserv | Quebec |
| Centiura | Ontario |