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| Name | Meaning | Gender | Origin |
| Cortez | conqueror | M | Spanish |
| Corwin | heart's companion; heart's delight | M | English |
| Cory | Hollow | E | Celtic/Gaelic |
| Corydon | Lark | M | Greek |
| Cos | Order. | M | Greek |
| Cosette | Victorious People | F | French |
| Cosima | Universe/ Harmony | F | Greek |
| Cosmo | The Universe | M | Greek |
| Coty | Small Slope | E | French |
| Courtney | From the Court | E | English |
| Coy | Woods | E | English |
| Coye | Woods | E | English |
| Coyne | Modest | M | French |
| Coz | A thorn. | M | Biblical |
| Cozbi | A liar/ sliding away. | F | Biblical |
| Cradawg | Mythical son of Bran. | M | Celtic |
| Craddock | Affection; beloved. | M | Welsh |
| Cradoe | Beloved. | M | Welsh |
| Cragen | Shell. | F | Welsh |
| Craig | From the Crag | M | Celtic/Gaelic |
| Crandall | From the crane valley. | M | English |
| Crandell | From the crane valley. | M | English |
| Cranleah | From the crane meadow. | M | English |
| Cranleigh | Variant of Cranley: Crane meadow. | M | English |
| Cranley | From the crane meadow. | M | English |
| Cranly | From the crane meadow. | M | English |
| Cranmer | King Henry the Eighth' Archbishop of Canterbury | M | Shakespearean |
| Crannog | Lake dweller. | M | Scottish |
| Cranston | From the crane estate. | M | English |
| Cranstun | From the crane estate. | M | English |
| Crawford | From the crow's ford. | M | English |
| Crayton | Variant of Creighton: Rocky town. | M | English |
| Creag | Dwells at the Crag. | M | Gaelic |
| Creda | Faith | F | English |
| Cree | Tribe Name | E | Native American |
| Creed | Belief; guiding principle. | M | English |
| Creedon | A surname meaning 'Belief; guiding principle.'. | M | Irish |
| Creiddylad | Jewel of the sea. | F | Welsh |
| Creiddyladl | Daughter of Llud. | F | Arthurian Legend |
| Creighton | Near the creek | M | English |
| Creissant | To create. | F | French |
| Creketun | Lives at the creek town. | M | English |
| Creola | Native to the Land/ Creole | E | American |
| Creon | Prince. Jocasta's brother. | M | Greek |
| Crepin | Variant of Crispin: Curly-haired. | M | Latin |
| Crescens | Growing/ increasing. | F | Biblical |
| Crescent | To Grow | E | English |
| Crescentia | Growing. | F | Latin |
| Crespin | Curly-haired. The 3rd century martyr St. Crispin is known as patron of shoemakers. | M | English |
| Cressida | Origin origin. Cresside was the faithless mistress of Troilus in Shakespeare's 'Troilus and Cressida'. | F | Greek |