| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 301 | Clarisse | French | Bright; shining and gentle; famous. | F | |
| 302 | Clarita | French | Bright. | F | |
| 303 | Claudette | French | A feminine form of Claud, a variant of the Latin Claudium meaning lame. Famous bearer: French-born American actress Claudette Colbert. | F | |
| 304 | Claudia | French | A feminine form of Claud, a variant of the Latin Claudium meaning lame. Claudia was mentioned in the book of Timothy in the New Testament. | F | |
| 305 | Claudine | French | A feminine form of Claud, a variant of the Latin Claudius meaning lame. Famous bearer: Claudine was the heroine of a series of novels by 20th-century French author Colette. Lame. | F | |
| 306 | Clemence | French | Clemency; mercy. Clemence was the mythological Roman goddess of pity. | F | |
| 307 | Clementina | French | Variant of Clemence meaning clemency, mercy. | F | |
| 308 | Clementine | French | Variant of Clemence meaning clemency, mercy. | F | |
| 309 | Coco | French | A pet name. | F | |
| 310 | Coletta | French | Victorious. Variant of Nicolette. | F | |
| 311 | Colette | French | Necklace. Victorious. A Middle Ages feminine form of Nicholas which was originally a diminutive of Nicolette. Famous bearers - 15th Century French nun St Colette, and 20th century French writer Colette. | F | |
| 312 | Colletta | French | Victorious. Variant of Nicolette. | F | |
| 313 | Collette | French | Necklace. Victorious. Variant of Nicolette. | F | |
| 314 | Comfort | French | Strength. | F | |
| 315 | Comforte | French | Strength. | F | |
| 316 | Constance | French | Constancy; steadfastness. . | F | |
| 317 | Constancia | French | Constancy; steadfastness. . | F | |
| 318 | Coralie | French | Coral. | F | |
| 319 | Coretta | French | Little maiden. | F | |
| 320 | Corette | French | Little maiden. | F | |