- Carlos III University of Madrid, Centre for Postgraduate Studies DEQARINST5368 Centro de Postgrado Spain
- Carlos III University of Madrid DEQARINST0809 ES0039 Universidad Carlos III de Madrid Getafe (Spain)
- Carl von Ossietzky the University of Oldenburg DEQARINST0379 DE0066 Carl von Ossietzky Universität Oldenburg Oldenburg (Germany)
- Carinthia University of Applied Sciences DEQARINST0065 AT0067 Fachhochschule Kärnten Spittal an der Drau (Austria)
- Caribbean Arts Campus DEQARINST9550 FR7196 Campus caribéen des arts Fort-de-France (France)
- Cardiff University DEQARINST2725 UK0135 Cardiff (United Kingdom (Wales))
- Cardiff Metropolitan University DEQARINST2726 UK0136 Cardiff (United Kingdom (Wales))
- Cardiff and Vale College DEQARINST9404 UK0824 Cardiff (United Kingdom (Wales))
- Cardenal Herrera-CEU University, Technical Teaching Advanced School DEQARINST8267 Escuela Superior de Enseñanzas Técnicas Moncada (Spain)
- Cardenal Herrera-CEU University, Law, Business and Political Science Faculty DEQARINST8314 Facultad de Derecho, Empresa y Ciencias Políticas Moncada (Spain)
- Cardenal Herrera-CEU University, Humanities and Communication Sciences Faculty DEQARINST8313 Facultad de Humanidades y Ciencias de la Comunicación Moncada (Spain)
- Cardenal Herrera-CEU University, Health Sciences Faculty - Centre of Elche DEQARINST8194 Facultad de Ciencias de la Salud-Centro de Elche Elche (Spain)
- Cardenal Herrera-CEU University, Health Sciences Faculty DEQARINST8316 Facultad de Ciencias de la Salud Moncada (Spain)
- Cardenal Herrera-CEU University DEQARINST0823 ES0053 Universidad Cardenal Herrera-CEU Alfara del Patriarca (Spain)
- Cappadocia University DEQARINST2585 TR0170 Kapadokya Üniversitesi Nevşehir (Türkiye)
- Capabel Hogeschool DEQARINST8841 NL0815 Utrecht (Netherlands)
- Canterbury Christ Church University DEQARINST2625 UK0022 Canterbury (United Kingdom (England))
- Campusnet - High School of Design DEQARINST7363 Campusnet Barcelona (Spain)
- CAMPUS 02 University of Applied Sciences DEQARINST0050 AT0052 Fachhochschule CAMPUS 02 Graz (Austria)
- Camilo José Cela University, School of Education DEQARINST8538 Facultad de Educación Villanueva de la Cañada (Spain)