| Prio | Original string | Translation | — |
|---|---|---|---|
| Cook Islands | Cooki saared | Details | |
| Costa Rica | Costa Rica | Details | |
| Croatia | Horvaatia | Details | |
| Cuba | Kuuba | Details | |
| Cyprus | Küpros | Details | |
| Czech Republic | Tšehhi Vabariik | Details | |
| Côte d’Ivoire | Côte d'Ivoire | Details | |
| Denmark | Taani | Details | |
| Djibouti | Djibouti | Details | |
| Dominica | Dominica | Details | |
| Dominican Republic | Dominikaani Vabariik | Details | |
| Dronning Maud Land | Dronning Maud Land | Details | |
| East Germany | Ida-Saksamaa | Details | |
| Ecuador | Ecuador | Details | |
| Egypt | Egiptus | Details | |
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