| Cardeo | |
| Cardinal Busines Services | British Columbia |
| Cardinal e-Quality Ltd | Ontario |
| CardioComm Solutions, Inc. | British Columbia |
| Cardol Data Systems, Inc. | Ontario |
| Cardwatch POS | Ontario |
| Care Caller | British Columbia |
| Career Spark | |
| CareerBeacon.com | New Brunswick |
| CareerExplorer | |
| Careerleaf | |
| CareerMatch | Ontario |
| Carefile Medical Systems, Inc. | Quebec |
| CarefreeIT | Ontario |
| CAregistration.com | Ontario |
| Careteam Technologies | British Columbia |
| CareTek Information Technology Solutions | Ontario |
| Cargo Digital | Alberta |
| CargoM | Quebec |
| Caribou Software | Alberta |
| Caricature Software, Inc. | Ontario |
| Carillon Information Security, Inc. | |
| Caristix | Quebec |
| Carleton Technologies, Inc. | Ontario |
| Carleton University | Ontario |
| Carleton University - Canada-India Acceleration Program | Ontario |
| Carleton University - Department of Electronics | Ontario |
| Carleton University - Department of Systems and Computer Engineering | Ontario |
| Carleton University - School of Computer Science | Ontario |
| Carleton University - School of Information Technology | Ontario |
| Carleton University - School of Mathematics and Statistics | Ontario |
| Carleton University Sprott School of Business | Ontario |
| Carlisle Technology | Ontario |
| CarlJ.ca | Ontario |
| CarlsonTech | Ontario |
| Carma Golf Systems, Inc. | Alberta |
| Carmanah Digital Creative | British Columbia |
| CARMIS | |
| Caro Systems | Ontario |
| Caron Business Solutions | British Columbia |
| Caron Couture Informatique, Inc. | Quebec |
| Carousel Computers | British Columbia |
| Carpe Diem New Media Publishing, Inc. | British Columbia |
| Carré Technologies, Inc. | Quebec |
| Carrefour Jeunesse Emploi du Comté de Johnson | |
| Carrefour jeunesse-emploi comtés de Richmond et Drummond-Bois-Francs | |
| Carrefour jeunesse-emploi de Sherbrooke | |
| Carrefour jeunesse-emploi des Cantons de l'Est | |
| Carrefour jeunesse-emploi du Haut-Saint-François | |
| Carrefour Jeunesse-Emploi Memphrémagog | |