- Ciano, Galeazzo1
- Ciechanowski, Jan1
- Citrine, Walter1
- Clementis, Vladimír1
- Clissold, Stephen1
- Cole, George Douglas Howard1
- Communist International1
- Communist International (Comintern)1
- Condliffe, J. B.1
- Counts, George S.1
- Crews, Albert R.1
- Croce, Benedetto1
- Curtius, Ernst Robert1
- Czapski, Józef1
- Czechoslovak Republic. Ministerstvo zahraničních věcí1
- Czereśniewski, Wawrzyniec1
- Czerwiński, Mieczysław1
- Dangerfield, Elma1
- Dansette, Adrien1
- Davies, Joseph Edward1