- CAS Software AG
- CGI Nederland
- CIDISI
- Cape Peninsula University of Technology
- Cardiff University
- Catholic University of Leuven = Katholieke Universiteit Leuven
- Center for Technology in Government
- Center for e-Government Studies
- Central China Normal University [Wuhan, China]
- Centre Européen de Recherche en Economie Financière et Gestion des Entreprises
- Centre National de la Recherche Scientifique
- Centre for Applied Informatics & School of Engineering and Science
- Centre for Artificial Intelligence Research [Pretoria]
- Centre for Environment, Entrepreneurship and Sustainable Development (CEESD)
- Centre for Research and Technology Hellas
- Centro Hospitalar do Porto
- China Aerospace Science and Industry Corporation
- China Minsheng Banking
- Chinese Academy of Social Sciences [Beijing]
- Chinese People's Armed Police Force Academy
- City & Bits GmbH
- College of Business Administration
- College of Business Administration [Dubai]
- College of Business [Rabigh]
- College of Business and Finance [Manama]
- Columbia University [New York]
- Consejo Nacional de Investigaciones Científicas y Técnicas [Buenos Aires]
- Copenhagen Business School [Copenhagen]
- Council for Scientific and Industrial Research [Pretoria]
- Council for Scientific and Industrial Research [South Africa]
- Covenant University
- Coventry University