International
| Cambodia |  |
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| Cameroon |  |
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| Canada |  |
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| Cape Verde |  |
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| Cayman Islands (British Overseas Territory) |  |
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| Central African Republic |  |
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| Chad |  |
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| Chile |  |
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| China |  |
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| Christmas Island (Australian Territory) |  |
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| Cocos Islands (Australian Territory) |  |
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| Colombia |  |
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| Comoros |  |
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| Congo-Brazzaville |  |
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| Congo-Kinshasa |  |
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| Cook Islands (New Zealand Territory) |  |
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| Costa Rica |  |
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| Côte d'Ivoire |  |
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| Croatia |  |
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| Cuba |  |
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| Curaçao (Netherlands Constituent Country) |  |
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| Cyprus |  |
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| Czech Republic |  |
Hungarian Countys
Magyar megyék
| Csongrád-Csanád vármegye |  |
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Hungarian Towns
Magyar városok
| Cegléd |  |
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| Celldömölk |  |
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| Cigánd |  |
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| Csákvár |  |
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| Csanádpalota |  |
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| Csenger |  |
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| Csepreg |  |
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| Csongrád |  |
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| Csorna |  |
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| Csorvás |  |
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| Csurgó |  |