| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 541 | Courtnay | French | From the court. | M | |
| 542 | Courtney | French | From the court, or short nose. From the surname of the aristocratic Courtenay family, based on the Old French word meaning short nose. Courtly; courteous. | F | |
| 543 | Courtney | French | From the court, or short nose. From the surname of the aristocratic Courtenay family, based on the Old French word meaning short nose. | M | |
| 544 | Coyan | French | Modest. | M | |
| 545 | Coyne | French | Modest. | M | |
| 546 | Creissant | French | To create. | F | |
| 547 | Crescent | French | To create. | F | |
| 548 | Cretien | French | Christian. | M | |
| 549 | Curcio | French | Courteous. | M | |
| 550 | Curt | French | Diminutive of Curtis: From a surname derived from the Old French 'curteis' meaning courteous. Also, from the court. | M | |
| 551 | Curtice | French | Courteous. | M | |
| 552 | Curtis | French | From a surname derived from the Old French 'curteis' meaning courteous.. | M | |
| 553 | Curtiss | French | Courteous. See also Curt. | M | |
| 554 | Cyrano | French | Cyrano de Bergerac was a seventeenth-century soldier and science-fiction writer. | M | |
| 555 | D'anton | French | Variant of Anthony. | M | |
| 556 | D'arcy | French | Dark. From Arcy. Variant of Darcy. | M | |
| 557 | D'or | French | Golden. | F | |
| 558 | Dace | French | Of the nobility. | M | |
| 559 | Dacey | French | Of the nobility. | M | |
| 560 | Dacian | French | Of the nobility. | M | |