| Cyril | - | Teutonic Name | Cyrill | - | Swiss Name |
| Cyrille | - | Cyprien Name | Cyrille | - | Greek Name |
| Cyrille | - | Cameroon Name | Cyrillus | - | Assyrian Name |
| Cyrus | - | United States Name | Cyruson | - | Assyrian Name |
| Cyst | - | Anglo Name | Czigany | - | Hungarian Name |
| Cäsar | - | Swiss Name | Da-eun | - | Korean Name |
| Da-hee | - | Korean Name | Da-hye | - | Korean Name |
| Da-in | - | Korean Name | Da-kyung | - | Korean Name |
| Da-sol | - | Korean Name | Da-Xia | - | Chinese Name |
| Daamin | - | Muslim Name | Daamodar | - | Hindu Name |
| Daania | - | Muslim Name | Daanish | - | Muslim Name |
| Daanya | - | Muslim Name | Daaq | - | Eskimo Name |
| Daaruk | - | Hindu Name | Dabareh | - | Biblical Name |
| Dabashis | - | Indian Name | Dabbah | - | Muslim Name |
| Dabbasheth | - | Biblical Name | Dabeet | - | Indian Name |
| Daberath | - | Biblical Name | Dabi | - | Basque Name |
| Dabir | - | Muslim Name |
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