| Castillon | French surname derived from the place name Castillon, meaning 'castle on a hill'. |
| Caswyn | Caswyn is a Welsh name meaning 'battle' or 'warrior' and also associated with 'hollow' or 'valley'. |
| Catarino | Italian surname derived from the Latin 'catharinus,' meaning pure or chaste. |
| Cathrynn | One who is pure; virginal |
| Catie | A form of katie |
| Catina | A form of katina |
| Catuskarni | Catuskarni is a Sanskrit name meaning 'four-armed' or 'having four arms', likely referring to a deity or avatar. |
| Catuspatha | A Sanskrit name meaning 'a path or road' or 'a way of life'. |
| Caullin | Derived from the Gaelic surname 'Caulin' or 'Caulin', possibly meaning 'slender' or 'fair-haired'. |
| Caydenn | One who is round; of the cask |
| Caydnn | Caydnn is a variant of Cayden, meaning 'fire' or 'fiery one' with a strong, bold connotation. |
| Caydran | Caydran is a variant of Cadrian, derived from the Latin 'cadere,' meaning 'to fall' or 'to descend.' |
| Caydren | Caydren is a variant of Cadren, derived from the Gaelic word 'cad,' meaning battle or war. |
| Cayetano | Cayetano is a Spanish surname meaning 'from the place of the hawk' or 'hawk's place'. |
| Cayne | Battle; Fighter |
| Cayson | Cayson means 'bringer of victory' or 'victorious warrior' and is of English and Scottish origin. |
| Cecellia | One who is blind; patron saint of music |
| Cecilly | One who is blind; patron |
| Ceeley | Ceeley is a variant of Cecily, derived from the Latin name Caecilia, meaning 'blind' or 'heavenly'. |
| Cees | A Dutch name meaning horn or strength. |
| 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. |
| Ceiriog | Ceiriog is a Welsh name meaning 'hollow' or 'valley' derived from the Old Welsh word 'ceir' meaning 'hollow' or 'cave'. |
| Ceiro | Cairo is a city in Egypt, but 'ceiro' is likely a variant of 'cairo' or a surname with unclear meaning. |
| Cejay | Cejay is a variant of Casey, derived from the Gaelic name 'Cathasaigh,' meaning 'bringer of victory.' |
| 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. |
| Celsey | A form of kelsey |
| Celso | A name meaning high or noble in rank. |
| Celt | Celt refers to a member of the ancient Indo-European speaking peoples of Europe, particularly in the British Isles. |
| Cem | The one who rules |
| Cemil | A Turkish name meaning beautiful one. |
| Cenk | A Turkish name meaning battle or war. |
| Cenobio | A community of monks living together under a common rule and governance. |
| Cenweard | Cenweard means 'battle warrior' or 'warrior of battle' in Old English. |
| Cephus | Cephus is a Latin name meaning 'hollow' or 'empty', possibly derived from the Greek word 'kephos'. |