- Centre des études supérieures industrielles (Institut supérieur des matériaux du Mans) DEQARINST1097 FR0213 Paris (France)
- Centre de formation pour les secteurs infirmier et de la santé de l'A.C.N. DEQARINST7417 BE0123 Woluwe-Saint-Lambert (Belgium (French Community))
- Centre d'Etudes supérieures d'Optométrie appliquée DEQARINST7412 BE0118 Namur (Belgium (French Community))
- Centre d'enseignement supérieur pour adultes DEQARINST7426 BE0132 Charleroi (Belgium (French Community))
- Centre d'enseignement supérieur de promotion et de formation continuée en brabant wallon DEQARINST7477 BE0183 Ottignies-Louvain-la-Neuve (Belgium (French Community))
- CentraleSupélec (Comue Université Paris-Saclay) (University of Reims Champagne-Ardenne) DEQARINST1205 FR0324 Gif-sur-Yvette (France)
- Centrale Lille Institut (Communauté d'universités et établissements Lille Nord de France ) DEQARINST1006 FR0121 Villeneuve-d'Ascq (France)
- Central-Kazakhstan Academy DEQARINST7501 Центрально-Казахстанская Академия Karaganda (Kazakhstan)
- Central-Kazakhstan Academy DEQARINST3191 Орталық-Қазақстан академиясы Kazakhstan
- Central European University Private University DEQARINST7538 AT0075 Vienna (Austria)
- Central European University DEQARINST1320 HU0023 Közép-európai Egyetem (KEE) Budapest (Hungary)
- Central Asian University DEQARINST3190 Орта - Азиялық университет Kazakhstan
- Central Asian Medical University International Medical University DEQARINST9565 Central Asian Medical University xalqaro tibbiyot universiteti Fergana (Uzbekistan)
- Central Asian Innovation University DEQARINST7380 Орталық Азия Инновациялық Университеті Shymkent (Kazakhstan)
- CCT College Dublin DEQARINST9569 IE0035 Dublin (Ireland)
- Ca’ Foscari University of Venice DEQARINST1476 IT0091 Università "Cà Foscari" VENEZIA Venice (Italy)
- Cavalry Captain Witold Pilecki State University of Malopolska in Oświęcim DEQARINST1907 PL0114 Małopolska Uczelnia Państwowa im. rotmistrza Witolda Pileckiego w Oświęcimiu Oswiecim (Poland)
- Caucasus University DEQARINST3024 GE0016 კავკასიის უნივერსიტეტი Tbilisi (Georgia)
- Caucasus International University DEQARINST3033 GE0015 კავკასიის საერთაშორისო უნივერსიტეტი Tbilisi (Georgia)
- Catholic University of Valencia, Veterinarian and Experimental Sciences Faculty DEQARINST8307 Facultad de Veterinaria y Ciencias Experimentales Valencia (Spain)