| Caliandra | Derived from beautiful flower. |
| Calil | Calil is a variant of Khalil, meaning 'friend' or 'beloved' in Arabic. |
| Calimero | Italian name meaning 'calm' or 'peaceful', derived from the Latin 'calmus', meaning calm or tranquil. |
| Caline | A French name meaning little darling. |
| Caliph | Successor to the Prophet Muhammad, leader of the Islamic community and state. |
| Caliyah | A name meaning beautiful and lovely. |
| Calle | One who is manly and strong; a free man |
| Calliandra | A name meaning beautiful flower. |
| Callianna | A name meaning beautiful flower. |
| Callianne | A name meaning beautiful grace. |
| Callisthenes | Beautiful and strong |
| Calogero | Calogero is a Sicilian name meaning 'beautiful and strong' or 'handsome and powerful'. |
| Candrali | Candrali is a Sanskrit name meaning 'beautiful lotus' or 'lovely flower' in Hindu and Buddhist cultures. |
| Carle | A man who is free and strong. |
| Carlette | A small and free noble woman. |
| Carline | A free woman of noble spirit. |
| Carlinhos | Little Charles, the free man. |
| Carlitos | The little free noble man. |
| Carloss | A variant meaning free man. |
| Carolien | A name meaning free person. |
| Carolin | A name meaning free person. |
| Castillon | French surname derived from the place name Castillon, meaning 'castle on a hill'. |
| Caullin | Derived from the Gaelic surname 'Caulin' or 'Caulin', possibly meaning 'slender' or 'fair-haired'. |
| Cecellia | One who is blind; patron saint of music |
| Ceeley | Ceeley is a variant of Cecily, derived from the Latin name Caecilia, meaning 'blind' or 'heavenly'. |
| Ceicelia | A variant meaning blind or heavenly. |
| Ceiceliah | A unique form meaning blind or wise. |
| Ceili | Gathering of friends, typically for music, dance, and socializing, often with traditional Irish music and food. |
| Celeena | A name meaning moon or light of sky. |
| Celestino | Celestino means heavenly or celestial, derived from the Latin word 'coelestis', meaning heavenly or sky. |
| Celestte | A heavenly daughter |
| Celleste | A heavenly daughter |
| Cellina | A name meaning heavenly or celestial. |
| Chlo | A name meaning a green shoot. |
| Chloea | A name meaning a blooming flower. |
| Chloee | A name meaning a fresh sprout. |
| Chloey | A name meaning a young green herb. |
| Chloie | A name meaning a blooming plant. |
| Christabelle | Beautiful follower of Christ |
| Cilix | Cilix is a rare given name of Greek origin, meaning 'he who is victorious' or 'triumphant'. |