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| Name | Meaning | Gender | Origin |
| Catia | Pure. Clear. | F | Greek |
| Cato | Good Judgement | E | Latin |
| Catori | Spriti | F | Native American |
| Catrin | Pure | F | Welsh |
| Catrina | a form of Catherine/ Katrina | F | Slavic |
| Catriona | Pure | F | Celtic/Gaelic |
| Catullus | Name of a poet. | M | Latin |
| Catus | Shrewd. | M | Latin |
| Caulan | Variant of Caelan: Powerful warrior. | M | Irish |
| Cauley | Relic. | M | Norse |
| Cavan | Hollow Place | E | Celtic/Gaelic |
| Cavana | From Cavan. | F | Irish |
| Cavell | Bold. | M | Teutonic |
| Cavillor | Critical. | M | Latin |
| Caw | Name of a giant. | M | Arthurian Legend |
| Cayenne | Hot Spice | F | French |
| Cayla | Crown of Laurel | F | Hebrew |
| Ceallach | Little Kelly - strife | M | Celtic/Gaelic |
| Ceallachan | Variant of Ceallach: War; strife. | M | Irish |
| Ceana | God is Gracious | F | Celtic/Gaelic |
| Ceannfhionn | Blond. | M | Gaelic |
| Ceapmann | Merchant. | M | English |
| Ceara | Spear. | F | Gaelic |
| Cearbhall | Manly. | M | French |
| Cece | Blind | F | Celtic/Gaelic |
| Cecelia | Blind | F | Celtic/Gaelic |
| Cecil | Blind | M | English |
| Cecile | Blind | F | French |
| Cecilia | Blind | F | Latin |
| Cecily | Blind | F | Celtic/Gaelic |
| Cedd | Name of a bishop. | M | Anglo-Saxon |
| Cedl | Blind. | M | Latin |
| Cedlio | Blind. | M | Latin |
| Cedra | Modern feminine of Cedric. | F | English |
| Cedric | Chief | M | English |
| Cedro | Abbreviation of Isadoro 'strong gift.'. | M | Spanish |
| Cedron | Black/ sad. | E | Biblical |
| Ceejay | a combination of the initials C + J | M | American |
| Ceileachan | Little champion. | M | Gaelic |
| Cein | Ancient. | M | Gaelic |
| Celerina | Quick | F | Spanish |
| Celeste | From the Heavens | F | Latin |
| Celestine | Heavenly | F | Latin |
| Celestyn | Heaven | F | French |
| Celia | Blind | F | Latin |
| Celina | Moon | F | Latin |
| Celine | Moon | F | French |
| Cemal | attractive | M | Arabic |
| Cenon | Receiver of life from Zeus. | M | Spanish |
| Centaurus | Half man half horse. | M | Latin |