| Cadwaladr | Battle leader. This name dates back to the 7th century. More commonly used as a surname than a first name in the present day. |
| Cadwaladyr | Variant of Cadwaladr: War leader; battle leader. |
| Cadwallader | Battle leader. This name dates back to the 7th century. More commonly used as a surname than a first name in the present day. |
| Cadwallen | Battle disolver. Also a variant of Cadwallon: Arranges the battle. |
| Cadwallon | A Welsh name meaning battle ruler. |
| Cadwgan | A Welsh name meaning battle glory. |
| Cadwgawn | Legendary son of Iddon. |
| Cadwr | Legendary son of Gwlyon. |
| Cadwy | Legendary son of Gereint. |
| Cadwyn | A Welsh name meaning a small chain. |
| Cady | Hillock. A surname or given name meaning a rhythmic flow of sounds. |
| Cadyna | A name meaning a rhythmic cadence. |
| Cadyryeith | An old name meaning battle speech. |
| Caecelius | Derived from the Latin for blind. |
| Caedmon | An old name meaning wise warrior. |
| Caedon | German surname which is derived from a place-name meaning |
| Caedwalla | A name meaning battle stranger. |
| Cael | Victorious people |
| Caela | Slender. Variant of Caley or Cailley: |
| Caelan | Victorious people. |
| Caeli | A name meaning heavenly or sky. |
| Caelin | Variant of Caelan: Powerful warrior. |
| Caellum | A name meaning a chisel or tool. |
| CAENEUS | myth name (a woman who asked to become a man) |
| Caenis | Daughter of Atrax. |
| Caerau | From the castle. |
| Caerleon | Name of a battle site |
| Caerlion | A name meaning fortress of lions. |
| Caersewiella | Lives at the watercress spring |
| Caerwyn | Derived from the Welsh elements caer 'fortress' and gwyn 'white, fair'. |
| CAESAR | Derived from the Latin for hairy. |
| Caesare | An Italian form meaning hairy one. |
| Caethes | A name of uncertain Greek origin. |
| Caezar | Variant of Caesar: Hairy. |
| Cafall | King Arthurs legendary hound. |
| Cafell | A variant of the name for a hound. |
| Caffar | An ancient name meaning conqueror. |
| Caffara | A name meaning a place of shelter. |
| Caffaria | A name meaning a fertile valley. |
| Caflice | A name meaning a joyful spirit. |