- CNR-ISTI, HIIS Laboratory
- Cape Peninsula University of Technology
- Carleton University
- Carnegie Mellon University [Pittsburgh]
- Catholic University of Leuven = Katholieke Universiteit Leuven
- Center for Advanced Studies and Research in Information and Communication Technologies & Society
- Center for Usability Research and Engineering [Vienna]
- Centre National de la Recherche Scientifique
- Centre for HCI Design [London]
- Chemnitz University of Technology | Technische Universität Chemnitz