| Cherniak Software Development Corporation | Ontario |
| Cherry Media | British Columbia |
| Chi Technologies, Inc. | |
| Child Care Pro | Manitoba |
| Chili Code Solutions | British Columbia |
| Chillabit | |
| Chilliwack Design | British Columbia |
| Chillwall, Inc. | |
| Chime.io | |
| Chimpkey | |
| China Canada Angels Alliance | |
| ChinaSEO | |
| Chinola.ca Web + Design, Inc. | Quebec |
| Chinook Multimedia | Alberta |
| ChinookTech | |
| Chipkin Automation Systems | British Columbia |
| Chirp Media, Inc. | Alberta |
| Chirp, Inc. | |
| Chisel AI, Inc. | |
| ChitogenX, Inc. | |
| Chocolat Média | Quebec |
| Choice Online Marketing Group, Inc. | Alberta |
| ChoiceCom Comunications Networks & Office Solutions | Ontario |
| ChoiceCom Networks & Communications | |
| Choquer Creative | |
| Chris Hayes | Ontario |
| ChrisDesign | Ontario |
| Chrishan Technology Solutions | |
| Chrishan Technology Solutions | |
| Christine Veillette | Ontario |
| Christophe Powell | Saskatchewan |
| Christopher J Bates | |
| Christopher Lee | British Columbia |
| Chromatic North | Ontario |
| Chrome Media | Ontario |
| Chronodisk | Alberta |
| ChrysaLabs | Quebec |
| Chrysalix Venture Capital | |
| CHU de Québec-Université Laval | |
| Chubb Canada | |
| Chudworth Technology Solutions | |
| CI Financial Corporation | |
| CI Focus | Ontario |
| CI Gear | Ontario |
| CI Technologies, Inc. | Ontario |
| Ci2 Group, Inc. | Alberta |
| CIAO | Quebec |
| Ciara Technologies, Inc. | Quebec |
| CIBC Capital Markets | |
| Cible Stratégique, Inc. | Quebec |