| Ciardha | Irish | Derived from ciar (black): hence, ".. |  |  |
| Ciarrai | Irish | Derived from ciar (black). Ciarrai .. | | |
| Cid | Spanish | Meaning "Lord" or "commander." The .. | | |
| Cillian | Irish | Pet form of Ceallach (war, strife)... | | |
| Cinneidid | Irish | Compound name composed from the Gae.. | | |
| Cipriano | Italian | Derived from the Latin Cyprianus (a.. |  | |
| Cipriano | Spanish | Derived from the Latin Cyprianus (a.. | | |
| Ciqala | Native Amer.. | Meaning "little one." From the Dako.. | | |
| Ciriaco | Italian | From the Latin Cyriacus, which is f.. | | |
| Cirillo | Italian | A form of Cyril, meaning "Lord." .. | | |
| Cirilo | Spanish | Spanish form of Cyril, a cognate .. | | |
| Ciro | Italian | Italian form of the Latin Cyrus, wh.. | | |
| Clancy | American | Derived from the Irish surname Clan.. | | |
| Clancy | Irish | Meaning "red-headed fighter's child.. | | |
| Clark | American | Transferred use of the surname deri.. |  | |
| Clark | English | Transferred use of the surname deri.. |  | |
| Clark | French | Meaning "clergyman" or "scholar." L.. | | |
| Claude | English | From the Latin Claudius, an old R.. | | |
| Claude | French | Used by both males and females, Cla.. | | |
| Claudio | Italian | From the Latin Claudius, an old Rom.. | | |
| Claudio | Spanish | From the Latin Claudius, an old Rom.. | | |
| Claudio | Portuguese | A variation upon the name Claude, m.. | | |
| Claudios | Greek | Derived from the Latin Claudius, an.. | | |
| Claus | German | Short form of Nicolaus (victory of .. | | |
| Claus | Scandinavia.. | Short form of Nicolaus (victory o.. | | |
| Clayborne | English | Meaning "brook near the clay pit." | | |
| Clayton | English | Transferred use of the surname orig.. | | |
| Cleandro | Spanish | Of Greek origin derived from the el.. | | |
| Cleavon | African-Ame.. | Modern coinage of uncertain derivat.. | | |
| Cleavon | English | Meaning "cliff." Actor Cleavon Litt.. | | |
| Cledwyn | Welsh | Compound name composed of the eleme.. | | |
| Clement | Biblical | Derived from the Latin clemens (mil.. | | |
| Clement | English | From the Latin Clemens (mild, gentl.. | | |
| Clement | French | From the Late Latin Clemens (mercif.. | | |
| Clement | Scottish | Derived from the Latin Clemens, whi.. | | |
