| Qvenatavci | A rare name of unknown origin. |
| Qynaath | One who is content and satisfied. |
| Caelestia | Derived from heavenly origins. |
| Caer | A name meaning a stone fortress. |
| Caitra | The first month of the calendar. |
| Calyx | The outer whorl of a flower bud. |
| Candiace | A name meaning pure or bright. |
| Cannonball | A heavy spherical projectile. |
| Cantata | A vocal composition with music. |
| Canto | A section of a long poem. |
| Caoilainn | A slender and fair maiden. |
| Capella | The brightest star in Auriga. |
| Capria | Derived from a wild goat. |
| Caramel | Burnt sugar confectionery. |
| Caravaggio | Named after an Italian town. |
| Carus | A Latin name meaning dear. |
| Carwen | A name meaning blessed love. |
| Carysia | A name meaning pure grace. |
| Cascade | A small waterfall descent. |
| Cashew | A kidneyshaped tropical nut. |
| Cassiano | Derived from a Roman family name. |
| Catius | A name of ancient Roman origin. |
| Catuai | A hybrid variety of coffee bean. |
| Caua | A name meaning hawk in Tupi. |
| Cayo | A small, lowlying sandy island. |
| Cebu | A province in the Philippines. |
| Cebua | A name related to Cebu island. |
| Cefai | A name of Arabic star origin. |
| Cello | A large bowed string instrument. |
| Ceresha | A name meaning harvest or growth. |
| Cereso | Derived from the Roman grain goddess. |
| Cersei | A name meaning a lioness of the west. |
| Cez | A short form meaning a ruler or king. |
| Cia | A name meaning moon or goddess. |
| Cider | A drink made from pressed fruit. |
| Cimbal | A traditional hammered dulcimer. |
| Cinder | A small piece of burnt coal or wood. |
| Cipher | A secret or disguised way of writing. |
| Cire | The French word for beeswax or wax. |
| Cittern | A stringed instrument from the past. |