- CENTRO STUDI PLINIUS
- CESNET [Prague]
- CNR Istituto di Scienza e Tecnologie dell’Informazione “A. Faedo” [Pisa]
- CSIRO Agriculture Flagship
- CSIRO Digital Productivity Flagship
- CSIRO Land and Water
- CSIRO Mineral Resources
- CSIRO Ocean and Atmosphere Flagship
- CSIRO: Digital Productivity and Services
- Centre for Ecology and Hydrology [Lancaster]
- Centre for Research and Technology Hellas [Athènes]
- Changjiang Water Resources Commission
- China University of Geosciences [Beijing]
- Cismet
- Collecte Localisation Satellite
- Commonwealth Scientific and Industrial Research Organisation [Canberra]
- Consiglio Nazionale delle Ricerche [Milano]
- Czech Academy of Sciences [Prague]
- Czech Centre for Science and Society
- Czech Environmental Information Agency
- Czech Hydrometeorological Institute
- Czech Space Office
- Czech Statistical Office
- Czech Technical University in Prague
- Czech University of Life Sciences Prague
- codematix GmbH