- Central European University1
- Chiha, Patric1
- Chugunov, T. K.1
- Ciborowski, Adolf1
- Ciszek, Walter J.1
- Communist International (Comintern)1
- Constitutional and Legal Policy Institute at OSI-Budapest1
- Craig, Gordon Alexander1
- Craus, Sandy1
- Csizmas, Michael1
- Csákó, Mihály1
- Cummings, Tanja1
- Curtius, Ernst Robert1
- Cuzioc, Pavel1
- Cyranek, Alina1
- Czechoslovak Unit1
- Dallin, David J.1
- David, F.1
- Debrer, Mariia G.1
- Deick, Christian1