| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 301 | Catherine | Greek | Pure. Famous bearer: Catherine the Great, Empress of Russia. | F | |
| 302 | Catheryn | Greek | Pure. Clear. | F | |
| 303 | Catheryna | Greek | Pure. Clear. | F | |
| 304 | CathIyn | Greek | Pure. Clear. | F | |
| 305 | Cathleen | Greek | Pure. Clear. | F | |
| 306 | Cathlin | Greek | Pure. Clear. | F | |
| 307 | Cathryn | Greek | Pure. Clear. | F | |
| 308 | Cathy | Greek | Form of the Greek Catherine meaning 'pure'. | F | |
| 309 | Catia | Greek | Pure. Clear. | F | |
| 310 | Catriona | Greek | Variant of Katrina: Pure. Clear. | F | |
| 311 | Caycee | Greek | Abbreviation of Acacia meaning guileless. | F | |
| 312 | Celaeno | Greek | A Harpy. | F | |
| 313 | Celandina | Greek | Swallow. | F | |
| 314 | Celandine | Greek | Swallow. | F | |
| 315 | Celena | Greek | Goddess of the moon. | F | |
| 316 | Celina | Greek | Variant of Selina: Moon goddess. | F | |
| 317 | Celosia | Greek | Buming. | F | |
| 318 | Cenobia | Greek | Stranger. | F | |
| 319 | Ceres | Greek | Another name for Demeter. | F | |
| 320 | Cestus | Greek | Aphrodite's girdle. | F | |