| Carson | - | United States Name | Carsten | - | Greek Name |
| Carston | - | English Name | Carsyn | - | American Name |
| Carter | - | English Name | Carter | - | Maori Name |
| Carthalo | - | Phoenician Name | Carthalon | - | Phoenician Name |
| Carthamir | - | Phoenician Name | Carthashtart | - | Phoenician Name |
| Carthon | - | Phoenician Name | Carthubaal | - | Phoenician Name |
| Cartier | - | Teutonic Name | Carver | - | Teutonic Name |
| Cary | - | Teutonic Name | Case | - | English Name |
| Casen | - | Scandinavian Name | Casey | - | Irish Name |
| Cash | - | English Name | Cashel | - | Irish Name |
| Cashlin | - | Irish Name | Casimir | - | Swiss Name |
| Casluhim | - | Biblical Name | Casmara | - | Maori Name |
| Cason | - | Scottish Name | Caspar | - | Persian Name |
| Casper | - | Persian Name | Caspian | - | English Name |
| Caspian | - | United States Name | Cass | - | Teutonic Name |
| Cassiano | - | Portuguese Name | Cassidy | - | Irish Name |
| Cassien | - | Cyprien Name | Cássio | - | Portuguese Name |
| Cassius | - | French Name | Caster | - | English Name |
| Castiel | - | Hebrew Name | Cat | - | Scottish Name |
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