| Name | Group | Language of Origin | Languages of Use | Meaning/Translation or Related Words | US 2024 |
| Cecily | Cecil/Cecilia | Latin | English | Words: blind | |
| Celeste | Celestine/Cölestina | Latin | Spanish, Italian, English | heavenly, of the sky | #198 |
| Celeste | Celestine/Cölestina | Latin | Italian | heavenly, of the sky | |
| Céleste | Celestine/Cölestina | Latin | French | heavenly, of the sky | |
| Céleste | Celestine/Cölestina | Latin | French | heavenly, of the sky | |
| Célestin | Celestine/Cölestina | Latin | French | heavenly, of the sky | |
| Celestina | Celestine/Cölestina | Latin | Italian | heavenly, of the sky | |
| Celestine | Celestine/Cölestina | Latin | English | heavenly, of the sky | |
| Célestine | Celestine/Cölestina | Latin | French | heavenly, of the sky | |
| Celestino | Celestine/Cölestina | Latin | Italian | heavenly, of the sky | |
| Celia | Celio/Celina | Latin | Spanish, Italian | Words: sky, heaven | #734 |
| Célia | Celio/Celina | Latin | French | Words: sky, heaven | |
| Celin | Celio/Celina | Latin | German | Words: sky, heaven | |
| Celina | Celio/Celina | Latin | German | Words: sky, heaven | #968 |
| Celina | Marcellinus/Marcellina | Latin | German | | |
| Celine | Celio/Celina | Latin | German | Words: sky, heaven | #227 |
| Celine | Marcellinus/Marcellina | Latin | French | | |
| Céline | Celio/Celina | Latin | French | Words: sky, heaven | |
| Celino | Celino | Latin | Spanish, Italian | | |
| Celio | Celio/Celina | Latin | Portuguese, Spanish, Italian | Words: sky, heaven | |
| Cellina | Celio/Celina | Latin | Italian | Words: sky, heaven | |
| Celso | Celso | Latin | Portuguese, Spanish, Italian | high, tall | |
| Célya | Celio/Celina | Latin | French | Words: sky, heaven | |
| Cesar | Cäsar/Cesira | Latin | German | Words: cut, excise | #360 |
| César | Cäsar/Cesira | Latin | Spanish, French | Words: cut, excise | |
| Cesare | Cäsar/Cesira | Latin | Italian | Words: cut, excise | |
| Cesarina | Cäsar/Cesira | Latin | Italian | Words: cut, excise | |
| Cesarino | Cäsar/Cesira | Latin | Italian | Words: cut, excise | |
| Cesario | Cäsar/Cesira | Latin | Italian | Words: cut, excise | |
| Cesário | Cäsar/Cesira | Latin | Portuguese | Words: cut, excise | |
| Cesidio | Cesidio | Latin | Italian | maybe pale | |
| Cesira | Cäsar/Cesira | Latin | Italian | Words: cut, excise | |
| Charitas | Caritas | Latin | German | Words: charity | |
| Chiara | Clare | Latin | Italian | clear, bright | |
| Chris | Christian/Christine | Latin | German, English | Christian, disciple of Christ | |
| Chrissi | Christian/Christine | Latin | English | Christian, disciple of Christ | |
| Chrissy | Christian/Christine | Latin | English | Christian, disciple of Christ | |
| Christa | Christian/Christine | Latin | German | Christian, disciple of Christ | |
| Christel | Christian/Christine | Latin | German | Christian, disciple of Christ | |
| Christelle | Christian/Christine | Latin | French | Christian, disciple of Christ | |
| Christen | Christian/Christine | Latin | English | Christian, disciple of Christ | |
| Christer | Christian/Christine | Latin | Scandinavian | Christian, disciple of Christ | |
| Christian | Christian/Christine | Latin | German, French, English | Christian, disciple of Christ | #77 |
| Christian | Christian/Christine | Latin | English | Christian, disciple of Christ | |
| Christiana | Christian/Christine | Latin | German, English | Christian, disciple of Christ | |
| Christiane | Christian/Christine | Latin | German, French | Christian, disciple of Christ | |
| Christie | Christian/Christine | Latin | English | Christian, disciple of Christ | |
| Christin | Christian/Christine | Latin | Scandinavian | Christian, disciple of Christ | |
| Christina | Christian/Christine | Latin | German, English | Christian, disciple of Christ | #703 |
| Christína | Christian/Christine | Latin | Greek | Christian, disciple of Christ | |
| Christine | Christian/Christine | Latin | German, English, French | Christian, disciple of Christ | |
| Christion | Christian/Christine | Latin | English | Christian, disciple of Christ | |
| Christl | Christian/Christine | Latin | German | Christian, disciple of Christ | |
| Christy | Christian/Christine | Latin | English | Christian, disciple of Christ | |
| Cilla | Priska | Latin | English | the ancient | |
| Ciprian | Cyprian/Cipriana | Latin | Romanian | from Cypres | |
| Cipriana | Cyprian/Cipriana | Latin | Italian | from Cypres | |
| Cipriano | Cyprian/Cipriana | Latin | Spanish, Italian | from Cypres | |
| Clair | Clare | Latin | English | clear, bright | |
| Claire | Clare | Latin | French | clear, bright | #67 |
| Clara | Clare | Latin | German, Spanish, Portuguese, English, Italian | clear, bright | #78 |
| Clare | Clare | Latin | English | clear, bright | #949 |
| Claretta | Clare | Latin | Italian | clear, bright | |
| Clarice | Clare | Latin | English | clear, bright | |
| Clarina | Clare | Latin | German | clear, bright | |
| Clarina | Clare | Latin | German | clear, bright | |
| Clarinda | Clare | Latin | German | clear, bright | |
| Clarinde | Clare | Latin | German | clear, bright | |
| Clarisa | Clare | Latin | English | clear, bright | |
| Clarissa | Clare | Latin | German, Italian, English | clear, bright | |
| Clarisse | Clare | Latin | French | clear, bright | |
| Claude | Claudius/Claudia | Latin | French | the limping | |
| Claude | Claudius/Claudia | Latin | French | the limping | |
| Claudette | Claudius/Claudia | Latin | French | the limping | |
| Claudia | Claudius/Claudia | Latin | German, Scandinavian, Spanish, Italian | the limping | |
| Claudina | Claudius/Claudia | Latin | English | the limping | |
| Claudine | Claudius/Claudia | Latin | French | the limping | |
| Claudio | Claudius/Claudia | Latin | Spanish, Italian | the limping | |
| Cláudio | Claudius/Claudia | Latin | Portuguese | the limping | |
| Claudiu | Claudius/Claudia | Latin | Romanian | the limping | |
| Claudius | Claudius/Claudia | Latin | German, English | the limping | |
| Clelia | Clelia | Latin | German, Italian, English | | |
| Clemence | Clement/Clemence/Clementine | Latin | English | the merciful, the gentle | |
| Clémence | Clement/Clemence/Clementine | Latin | French | the merciful, the gentle | |
| Clemens | Clement/Clemence/Clementine | Latin | German | the merciful, the gentle | |
| Clement | Clement/Clemence/Clementine | Latin | English | the merciful, the gentle | |
| Clément | Clement/Clemence/Clementine | Latin | French | the merciful, the gentle | |
| Clemente | Clement/Clemence/Clementine | Latin | Portuguese, Spanish, Italian | the merciful, the gentle | |
| Clementina | Clement/Clemence/Clementine | Latin | German | the merciful, the gentle | |
| Clementine | Clement/Clemence/Clementine | Latin | German, French, English | the merciful, the gentle | #477 |
| Clémentine | Clement/Clemence/Clementine | Latin | French | the merciful, the gentle | |
| Coelestina | Celestine/Cölestina | Latin | German | heavenly, of the sky | |
| Coleman | Columbano | Latin | English, Irish | dove | |
| Cölestin | Celestine/Cölestina | Latin | German | heavenly, of the sky | |
| Cölestine | Celestine/Cölestina | Latin | German | heavenly, of the sky | |
| Cölestinus | Celestine/Cölestina | Latin | German | heavenly, of the sky | |
| Colm | Callum | Latin | Irish | dove | |
| Colman | Columbano | Latin | Irish | dove | |
| Colomba | Colombe | Latin | Italian | dove | |
| Colombano | Columbano | Latin | Italian | dove | |