- Cardiff Business School
- Cardiff University
- Carlsberg Fondation = Carlsbergfondet [Copenhague]
- Cedrat Technologies
- Center for Precision Metrology, Dept. of ME&ES
- Central Switzerland Center
- Centre National de la Recherche Scientifique
- Centre Suisse d'Electronique et Microtechnique SA
- Centre Suisse d'Electronique et de Microtechnique S.A.
- Centre for Aerospace Manufacturing
- Chair of Assembly Systems, RWTH Aachen University
- Chair of Quality Engineering
- Chemnitz University of Technology | Technische Universität Chemnitz
- China Agricultural University
- Chungju National University
- College of Information and Electrical Engineering [Beijing]
- Consiglio Nazionale delle Ricerche [Milano]