| Comysco | Ontario |
| Conamex International Software Corporation | Quebec |
| Conative Information Technology | |
| Conavi Medical | |
| Concatenate, Inc. | Ontario |
| Concena | Ontario |
| Concepsim | |
| Concept ABC, Inc. | Quebec |
| Concept Computer Corporation | Ontario |
| Concept Design | British Columbia |
| Concept GeeBee | Quebec |
| Concept J Multimedia, Inc. | New Brunswick |
| Concept Numérique | Quebec |
| Concept VPS, Inc. | |
| Concepta | Quebec |
| Conception Dalien | Quebec |
| Conception de site web Gatineau | |
| Conception Fat Fish | Quebec |
| Conception Génik, Inc. | Quebec |
| Conception Graphica | |
| Conception GT | Quebec |
| Conception X Enr. | Quebec |
| Conceptographe | Quebec |
| Conceptoriel | Quebec |
| Concepts Industriels | Quebec |
| Concepts Industriels, Inc. | |
| Concepts K | Quebec |
| Concepts Logiques 4DI, Inc. | Quebec |
| Conceptual | Ontario |
| Conceptualiz, Inc. | Ontario |
| Concerta Consulting, Inc. | Alberta |
| Concerti | Quebec |
| Concertia Technologies, Inc. | Nova Scotia |
| Concerto | |
| Concise Systems Corporation | British Columbia |
| Concord Idea Corporation | Ontario |
| Concord Parking | |
| Concordia Bootcamps | Quebec |
| Concordia University | Quebec |
| Concordia University - Centre for Pattern Recognition and Machine Intelligence | Quebec |
| Concordia University - Concordia Institute for Information Systems Engineering | Quebec |
| Concordia University - Department of Computer Science and Software Engineering | Quebec |
| Concordia University - Department of Electrical and Computer Engineering | Quebec |
| Concordia University - Department of Mathematics and Statistics | Quebec |
| Concordia University - District 3 | Quebec |
| Concordia University - The Semantic Software Lab | Quebec |
| Concordia University of Edmonton | Alberta |
| Concrescence Design | Ontario |
| Concrete | |
| Concrete Ventures | |