[an error occurred while processing this directive]
| Name | Meaning | Gender | Origin |
| Cianan | Variant of Cian: Old; ancient; archaic. | M | Irish |
| Cianna | God is Gracious | F | Italian |
| Ciar | Saint. | F | Irish |
| Ciara | Black and Mysterious | F | Celtic/Gaelic |
| Ciarda | Dark. | F | Gaelic |
| Ciardha | Variant of Ciaran: Black-haired. | M | Irish |
| Ciardubhan | Little black one. | M | Gaelic |
| Ciarrai | County. Variant of Ciaran: Black-haired. | M | Irish |
| Ciatlllait | Archaic. | F | Irish |
| Cibil | Variant of Sibyl; In Greek mythology a name for prophetess or fortune-teller. | F | English |
| Cibor | Strong. | M | Hebrew |
| Cicada | Loud Insect of the Night | F | Greek |
| Cicely | From the name CECILIA | F | Latin |
| Cicero | The Historian | M | Greek |
| Cicilia | Blind. The blind St. Cecilie/ patron saint of music/ was a talented musician. | F | Latin |
| Cicily | From the name CECILIA | F | Latin |
| Cid | Lord | M | Spanish |
| Ciel | From Heaven/ Heavenly | F | Latin |
| Cili | Blind | F | Hungarian |
| Cilicia | Ancient Province of Asia | F | Latin |
| Cillian | War | M | Celtic/Gaelic |
| Cim | Ruler. | F | English |
| Cimber | The Tragedy of Julius Caesar' A conspirator against Caesar. | M | Shakespearean |
| Cimberleigh | From the royal meadow. | F | English |
| Cinderella | Girl by the Cinders | F | Latin |
| Cindy | From the name CYNTHIA | F | Greek |
| Cinese | Variant of Chinese: Nigerian name meaning 'God protects'. | M | African |
| Cingeswell | Lives at the king's spring. | M | English |
| Cingeswiella | Lives at the king's spring. | M | English |
| Cinna | The Tragedy of Julius Caesar' A conspirator against Caesar. A poet. | M | Shakespearean |
| Cinnamon | The Spice | F | American |
| Cinnard | From the high hill. | M | Gaelic |
| Cinneide | Variant of Cinneidid: Helmeted; helmed head. | M | Irish |
| Cinneidid | Helmet head; helmed head. | M | Irish |
| Cinneididh | Helmeted. | M | Gaelic |
| Cinneidigh | Variant of Cinneidid: Helmeted; helmed head. | M | Irish |
| Cinnfhail | From the head of the cliff. | M | Gaelic |
| Cinnia | Beauty. | F | Celtic |
| Cinnie | Beauty. | F | Celtic |
| Cinthia | One of the names of the mythological moon goddess Artemis referring to her birth on Mount Cynthus. | F | Greek |
| Cinwell | Lives at the king's spring. | M | English |
| Cinxia | A name referring to Juno. | F | Latin |
| Cinyras | Founded the cult of Aphrodite. | F | Greek |
| Cinzia | Variant of Greek name Cynthia - one of the names of the mythological mood goddess Artemis referring to her birth on Mount Cynthus. | F | Italian |
| Ciorstag | Christian. | F | Gaelic |
| Ciorstan | Christian. | F | Gaelic |
| Cipriana | From Cyprus. | F | Spanish |
| Cipriano | From Cyprus. | M | Spanish |
| Ciqala | Little One | E | Native American |
| Cira | Sun | F | Italian |