- CITY College DEQARINST7711 Athens (Greece)
- Ciputra University DEQARINST8747 Universitas Ciputra Surabaya (Indonesia)
- Cihan University DEQARINST5843 Erbil (Iraq)
- CIEE Study Abroad London Ltd DEQARINST9408 UK0828 London (United Kingdom (England))
- Chulalongkorn University DEQARINST6139 จุฬาลงกรณ์มหาวิทยาลัย Bangkok (Thailand)
- Christian University College of Teacher Education Vienna/Krems DEQARINST0045 AT0047 Kirchliche Pädagogische Hochschule Wien/Krems Vienna (Austria)
- Christian Theological Academy in Warsaw DEQARINST1859 PL0046 Chrześcijańska Akademia Teologiczna w Warszawie Warszawa (Poland)
- Chongqing University of Posts and Telecommunications DEQARINST5828 重庆邮电大学 Chongqing (China, People's Republic of)
- Chongqing College of Mobile Communication DEQARINST8778 重庆移通学院 Chongqing (China, People's Republic of)
- China agricultural university DEQARINST5748 Китайский сельскохозяйственный университет Beijing (China, People's Republic of)
- Chemnitz University of Technology DEQARINST0404 DE0093 Technische Universität Chemnitz Chemnitz (Germany)
- Chelyabinsk State University DEQARINST5750 Челябинский государственный университет Chelyabinsk (Russia)
- Cheikh Anta Diop University DEQARINST7321 Université Cheikh Anta Diop de Dakar Dakar (Senegal)
- Chechen State University DEQARINST7091 Федеральное государственное бюджетное образовательное учреждение высшего образования "Чеченский государственный университет" Grozny (Russia)
- CHE Christian University of Applied Sciences DEQARINST1738 NL0026 Christelijke Hogeschool Ede Ede (Netherlands)
- Charlotte Fresenius Hochschule DEQARINST8711 DE0487 Idstein (Germany)
- Charles University DEQARINST0258 CZ0014 Univerzita Karlova Prague (Czech Republic)
- Charles Darwin University DEQARINST5535 Casuarina (Australia)
- Charisma University DEQARINST7498 Turks and Caicos Islands (Turks and Caicos Islands)
- Chalmers University of Technology DEQARINST2307 SE0009 Chalmers tekniska högskola Göteborg (Sweden)