| Catalin | - | Romanian Name | Cathair | - | Scottish Name |
| Cathan | - | Irish Name | Cathmor | - | Gaelic Name |
| Cato | - | Latin Name | Catterick | - | Arthurian Name |
| Catur | - | Indonesian Name | Cauley | - | Scottish Name |
| Caulton | - | English Name | Cavalon | - | Arthurian Name |
| Cavan | - | Gaelic Name | Cavaq | - | Eskimo Name |
| Cavit | - | Turkish Name | Cavittuq | - | Eskimo Name |
| Cavvik | - | Eskimo Name | Caw | - | Arthurian Name |
| Cawley | - | Scottish Name | Cayden | - | Gaelic Name |
| Caydon | - | American Name | Cayle | - | English Name |
| Cayne | - | Hebrew Name | Cayson | - | American Name |
| Ceanfhionn | - | Gaelic Name | Ceard | - | Scottish Name |
| Ceardach | - | Scottish Name | Ceasar | - | English Name |
| Ceawlin | - | Anglo Name | Cecil | - | Latin Name |
| Cecil | - | West Indies Name | Cecilio | - | Italian Name |
| Cecilius | - | Dutch Name | Cedar | - | English Name |
| Cedar | - | Maori Name | Cedd | - | Anglo Name |
| Cedric | - | English Name | Cédric | - | Cameroon Name |
| Cedric | - | Teutonic Name | Cedrick | - | Celtic Name |
| Cedrik | - | English Name | Cedron | - | Biblical Name |
| Cedrych | - | Welsh Name | Ceehan | - | Maori Name |
| Cel | - | Philippines Name | Celal | - | Turkish Name |
| Celalettin | - | Turkish Name |
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