| Code | Name | Continent | Region |
| CHL | Chile | South America | South America |
| CHN | China | Asia | Eastern Asia |
| CIV | Côte d’Ivoire | Africa | Western Africa |
| CMR | Cameroon | Africa | Central Africa |
| COD | Congo, The Democratic Republic of the | Africa | Central Africa |
| COG | Congo | Africa | Central Africa |
| COK | Cook Islands | Oceania | Polynesia |
| COL | Colombia | South America | South America |
| COM | Comoros | Africa | Eastern Africa |
| CPV | Cape Verde | Africa | Western Africa |
| CRI | Costa Rica | North America | Central America |
| CUB | Cuba | North America | Caribbean |
| CXR | Christmas Island | Oceania | Australia and New Zealand |
| CYM | Cayman Islands | North America | Caribbean |
| CYP | Cyprus | Asia | Middle East |
| CZE | Czech Republic | Europe | Eastern Europe |
| DEU | Germany | Europe | Western Europe |
| DJI | Djibouti | Africa | Eastern Africa |
| DMA | Dominica | North America | Caribbean |
| DNK | Denmark | Europe | Nordic Countries |