| Prio | Original string | Translation | — |
|---|---|---|---|
| Cameroon | Kamerun | Details | |
| Canada | Kanada | Details | |
| Canton and Enderbury Islands | Wyspy Canton i Enderbury | Details | |
| Cape Verde | Republika Zielonego Przylądka | Details | |
| Cayman Islands | Kajmany | Details | |
| Central African Republic | Republika Środkowoafrykańska | Details | |
| Chad | Czad | Details | |
| Chile | Chile | Details | |
| China | Chiny | Details | |
| Christmas Island | Wyspa Bożego Narodzenia | Details | |
| Cocos [Keeling] Islands | Wyspy Kokosowe | Details | |
| Colombia | Kolumbia | Details | |
| Comoros | Komory | Details | |
| Congo - Brazzaville | Kongo - Brazzaville | Details | |
| Congo - Kinshasa | Kongo - Kinszasa | Details | |
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