| 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 | Culbert | - | Teutonic Name |
| Culhwch | - | Arthurian Name | Culiean | - | Gaelic Name |
| Cullan | - | Gaelic Name | Cullen | - | Scottish Name |
| Culley | - | Gaelic Name | Culloden | - | Scottish Name |
| Culver | - | Teutonic Name | Cuma | - | Turkish Name |
| Cumali | - | Turkish Name | Cumhur | - | Turkish Name |
| Cumin | - | Scottish Name | Cumming | - | Scottish Name |
| Cunaaluk | - | Eskimo Name | Cunaq | - | Eskimo Name |
| Cuneyd | - | Turkish Name | Cunningham | - | Scottish Name |
| Cuong | - | Vietnamese Name | Curbin | - | Teutonic Name |
| Curcio | - | Teutonic Name | Curran | - | Gaelic Name |
| Currie | - | Teutonic Name | Curt | - | French Name |
| Curtis | - | French Name | Curtis | - | West Indies Name |
| Cush, Cushan, Cushi | - | Biblical Name | Cuthbert | - | West Indies Name |
| Cutler | - | Teutonic Name | Cutter | - | Teutonic Name |
| Cuumak | - | Eskimo Name | Cuvaq | - | Eskimo Name |
| Cuviaq | - | Eskimo Name | Cvetadin | - | Serbian Name |
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