| Cricket | - | American Name | Crimson | - | English Name |
| Criostoir | - | Gaelic Name | Cris | - | English Name |
| Crispin | - | Swiss Name | Crispina | - | African Name |
| Crispus | - | Biblical Name | Crissa | - | Scottish Name |
| Crissie | - | Scottish Name | Crissy | - | Scottish Name |
| Cristel | - | Australian Name | Cristen | - | Latin Name |
| Cristian | - | Latin Name | Cristiana | - | Australian Name |
| Cristiano | - | Latin Name | Cristie | - | Scottish Name |
| Cristina | - | American Name | Cristine | - | American Name |
| Cristo | - | Greek Name | Cristobal | - | Spanish Name |
| Cristoforo | - | Italian Name | Cristy | - | Scottish 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 |
| Crystal | - | English Name | Csaba | - | Hungarian Name |
| Csilla | - | Hungarian Name | Cualli | - | Nahuatl Name |
| Cuauhtemoc | - | Nahuatl Name | Cuba | - | American Name |
| Cuetlachtli | - | Nahuatl Name | Cuetzpalli | - | Nahuatl Name |
| Cuicatl | - | Nahuatl Name | Cuinn | - | Gaelic Name |
| Cuixtli | - | Nahuatl Name | Culhwch | - | Arthurian Name |
| Culiean | - | Gaelic Name | Cullan | - | Gaelic Name |
| Cullen | - | Scottish Name | Culley | - | Gaelic Name |
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