| Cuitlahuac | Ruler who is like excrement |
| Culen | Derived from a medicinal plant |
| Cullinan | Refers to a very large diamond |
| Culyn | A variant of a Gaelic surname |
| Curelo | One who offers deep healing. |
| Currado | A bold and daring advisor. |
| Curtez | A polite and refined person. |
| Curtys | One who is courteous in life. |
| Curtyss | A person of refined manners. |
| Cuyle | Narrow, a sound, a strait |
| Cynebil | A wise and royal advisor. |
| Cynestan | A royal and firm stone. |
| Cannonball | A heavy spherical projectile. |
| Canto | A section of a long poem. |
| Caramel | Burnt sugar confectionery. |
| Caravaggio | Named after an Italian town. |
| Carus | A Latin name meaning dear. |
| 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. |
| Cefai | A name of Arabic star origin. |
| Cello | A large bowed string instrument. |
| Cereso | Derived from the Roman grain goddess. |
| Cez | A short form meaning a ruler or king. |
| Chaiwat | A name meaning life protector. |
| Chakotay | A name meaning a bridge builder. |
| Chandrahar | A name meaning moon necklace. |
| Chandravansh | Of the lunar dynasty lineage. |
| Chat | A bird known for its chatter. |
| Chikki | A sweet made of nut and jaggery. |
| Childe | A youth of noble birth status. |
| Chime | A harmonious ringing of bells. |
| Chinn | A name meaning small or little. |
| Chitrakoot | A hill of many pictures. |
| Chnum | An ancient Egyptian creator god. |