- Carleton University
- Catalan Institution for Research and Advanced Studies
- Catholic University of Leuven = Katholieke Universiteit Leuven
- Center for Bioinformatics and Computational Biology [Maryland]
- Center for Integrative Genomics - Institute of Bioinformatics, Génopode
- Centre National d'Études Spatiales [Toulouse]
- Centre National de la Recherche Scientifique
- Centre de Coopération Internationale en Recherche Agronomique pour le Développement
- Centre for Ecological Research of the Hungarian Academy of Sciences
- Centre for Life’s Origins and Evolution
- Commissariat à l'énergie atomique et aux énergies alternatives
- Computer Science Departement [Indiana]
- Consejo Superior de Investigaciones Cientificas [España] = Spanish National Research Council [Spain]