| Cecilija | | - | Slovene, Croatian | |
| Cecilio | | the-THEE-lyo (Spanish), se-SEE-lyo (Latin American Spanish), che-CHEE-lyo (Italian) | Spanish, Portuguese, Italian | |
| Cedar | | SEE-dər | English (Rare) | |
| Ceferino | | the-fe-REE-no (Spanish), se-fe-REE-no (Latin American Spanish) | Spanish | |
| Celandine | | SEL-ən-deen | English (Rare) | |
| Celeste | | che-LE-ste (Italian), sə-LEST (English) | Italian, English | |
| Celestina | | the-le-STEE-nah (Spanish), se-le-STEE-nah (Latin American Spanish), che-le-STEE-nah (Italian) | Spanish, Italian | |
| Celestino | | the-le-STEE-no (Spanish), se-le-STEE-no (Latin American Spanish), che-le-STEE-no (Italian) | Spanish, Italian, Portuguese | |
| Celia | | SEEL-yə (English), SEE-lee-ə (English), THE-lyah (Spanish), SE-lyah (Latin American Spanish), CHE-lyah (Italian) | English, Spanish, Italian | |
| Celinda | | sə-LIN-də | English (Rare) | |
| Celino | | che-LEE-no (Italian), the-LEE-no (Spanish), se-LEE-no (Latin American Spanish) | Italian (Rare), Spanish (Rare) | |
| Celio | | CHE-lyo (Italian), THE-lyo (Spanish), SE-lyo (Latin American Spanish), SE-lyoo (Portuguese) | Italian, Spanish, Portuguese | |
| Celso | | CHEL-so (Italian), THEL-so (Spanish), SEL-so (Latin American Spanish) | Italian, Spanish, Portuguese | |
| Celsus | | - | Ancient Roman | |
| Cenhelm | | - | Anglo-Saxon | |