| Cantilena | A smooth, lyrical vocal melody. |
| CAOILFHIONN | slender and comely |
| CAPEK | A person from a cape or headland. |
| Cappadocia | A sphere, buckle, or hand. |
| Capucina | Inspired by the nasturtium flower. |
| Caraka | Wanderer; A Wandering Religious Student |
| Carillie | A variant name meaning dear or beloved. |
| Carissima | An Italian term meaning dearest one. |
| Carla | Feminine variant of Charles meaning manly |
| Carlee | Strong One; Man |
| Carlen | From carlin-champion |
| Carli | A name meaning free woman. |
| Carlos | A name meaning free man. |
| Carly | Little and womanly. Alternate Spelling: Carlie. |
| Carmela | Hebrew name meaning garden of God. |
| Carmelide | Guinevere's father. |
| Carmem | Portuguese form meaning a garden. |
| Carmentis | Roman goddess of childbirth. |
| Carmichael | Friend of Saint Michael |
| Carmontieh | From the gift of God. |
| Caroll | Variant of Carroll: Man. Famous Bearer: late television actor Carroll O'Connor. |
| Carona | A Latin name meaning a crown. |
| Carrola | A feminine form meaning free man. |
| Carsen | Son of Marsh Dwellers |
| Cartagh | Variant of Carthach: Loving. A variant of Caradoc. The Irish St. Carthach, also known as St Carthage, founded an early 7th century monastery at Lismore, County Waterford. |
| Carumoda | Pleasing; Joy; Gladness |
| Carusara | The Essence of All that is Lovely |
| Caruvi | A person who is very beautiful. |
| Carver | Carves wood or sculpts |
| Caryl | Feminine of Carl: joy |
| Carys | Carys is a Welsh name meaning 'love' or 'beloved', derived from the word 'car' meaning 'dear one'. |
| Cass | A short form of names like Cassandra or Cassidy. |
| Cassandrea | Unheeded prophetess. Cassandra was a Trojan prophetess, daughter of King Priam. In Homer's 'The Iliad' Cassandra's prediction of the fall of Troy was unheeded. |
| Cassiel | The guardian of Capricornians. |
| Castel | A name derived from the word for a fortress. |
| Castle | A large fortified building. |
| Catalina | Pure and clear in nature. |
| Catena | A series of linked things. |
| Catesby | Henry VI, Part 2' Sir John Stanley. 'King Henry the Sixth, Part III' Sir William Stanley. 'As You Like It' A country fellow, in love with Audrey. 'The Merry Wives of Windsor' A boy, son to Page. 'King Richard III' Sir William Catesby. |
| Cathey | A diminutive meaning pure soul. |