| Cristiano | - | Latin Name | Cristo | - | Greek Name |
| Cristobal | - | Spanish Name | Cristoforo | - | Italian Name |
| Crom | - | Scottish Name | Cromwell | - | Scottish Name |
| Cronan | - | Gaelic Name | Crosby | - | English Name |
| Crudel | - | Arthurian Name | Cruim | - | Scottish Name |
| Cruz | - | Spanish Name | Cruze | - | Spanish Name |
| Csaba | - | Hungarian Name | Cuauhtemoc | - | Nahuatl Name |
| Cuba | - | American Name | Cuetlachtli | - | Nahuatl Name |
| Cuetzpalli | - | Nahuatl Name | Cuinn | - | Gaelic Name |
| Cuixtli | - | Nahuatl Name | Culhwch | - | Arthurian Name |
| Culiean | - | Gaelic Name | Cullan | - | Gaelic Name |
| Cullen | - | Scottish Name | Culley | - | Gaelic Name |
| Culloden | - | Scottish Name | Cumin | - | Scottish Name |
| Cumming | - | Scottish Name | Cunningham | - | Scottish Name |
| Cuong | - | Vietnamese Name | Curran | - | Gaelic Name |
| Curt | - | French Name | Curtis | - | French Name |
| Cush, Cushan, Cushi | - | Biblical Name | Cy | - | Persian Name |
| Cy | - | Cyprien Name | Cyprian | - | African Name |
| Cyrenius | - | Biblical Name | Cyrille | - | Greek Name |
| Cyrus | - | Biblical Name | Daamin | - | Muslim Name |
| Daamodar | - | Hindu Name | Daanish | - | Muslim Name |
| Daaruk | - | Hindu Name | Dabashis | - | Indian Name |
| Dabbah | - | Muslim Name | Dabbasheth | - | Biblical Name |
| Dabeet | - | Hindu Name |
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