| CAD-CAM Services | Quebec |
| Cadabra Solutions, Inc. | |
| CADD Solutions, Inc. | British Columbia |
| Cadence Automation, Inc. | Quebec |
| Cadency | |
| Cadent Computing, Inc. | British Columbia |
| Cadeon, Inc. | Alberta |
| Cadex Electronics, Inc. | British Columbia |
| CADLink Technology Corporation | Ontario |
| Cadman Capital | Ontario |
| CADNET Media, Inc. | British Columbia |
| Cadsoft Corporation | Ontario |
| CAE Memphrémagog | |
| CAE, Inc. | |
| CAEFEM | Manitoba |
| Café Noir | Quebec |
| Caffari Technologies | Ontario |
| Caffe'nix Technologies | Ontario |
| Caffeinated Computer Consulting, Inc. | Alberta |
| Caffeine Creations | |
| Cageless Content | |
| Cahill Software | Alberta |
| CAIL.com | Ontario |
| CAISNet, Inc. | Alberta |
| Caisse de dépôt et placement du Québec | Quebec |
| Caisse Financial Group | |
| CAKE Communication | Quebec |
| Cakemail | Quebec |
| Cal-Imaging Specialists | |
| Caladena Groupe, Inc. | Ontario |
| Calbridge | Ontario |
| Calcetech | Quebec |
| Calcul Québec | Quebec |
| CalendarHero | Ontario |
| CalendarSpots.com | Quebec |
| Calexis | Ontario |
| Calgah Computer Systems Ltd | Quebec |
| Calgary Backup | Alberta |
| Calgary Computer Doctor | Alberta |
| Calgary Ecommerce Services | Alberta |
| Calgary Economic Development | |
| Calgary Innovation Coalition | Alberta |
| Calgary Linux User Group | Alberta |
| Calgary Oracle Users Group | Alberta |
| Calgary PC Medic | Alberta |
| Calgary SEO Company | Alberta |
| Calgary Telephone & Wiring Ltd | Alberta |
| Calgary UNIX Users Group | Alberta |
| Calian | Ontario |
| Caliban Computing | Ontario |