| Name | Meaning | Gender | Origin |
|---|
| Cisco | Frenchman or free man | Male | English |
| Clarissa | bright, clear | Female | Latinized |
| Claudia | Feminine of Claude.
| Female | Latin |
| Coco | A pet name.
| Female | Spanish |
| Coco | A pet name.
| Female | Spanish |
| Coco | A pet name.
| Female | Spanish |
| Constanza | constant, unchanging | Female | Italian |
| Corazon | Heart | Unisex | Filipino |
| Cris | Anointed, Follower Of Christ | Unisex | English |
| Cruz | cross | Male | Spanish |
| Cuarto | Born fourth
| Male | Spanish |
| Curcio | Courteous
| Male | |
| Currito | Free
| Male | |
| Curro | Free
| Male | |
| Cyntia | Variant of Greek name Cynthia - one of the names of the mythological mood goddess Artemis referring to her birth on Mount Cynthus.
| Female | |
| Dacio | from Dacia.
| Male | |
| Dalila | Delicate
| Female | Swahili |
| Damario | Masculine form of the Greek Damaris gentle.
| Male | Spanish |
| Damian | Tame
| Male | Greek |
| Damita | Little noble
| Female | Spanish |
| Dani | Feminine of Daniel God will judge.
| Male | English |
| Danilo | Variant of Daniel God is my judge.
| Male | Ukrainian |
| Danita | Feminine variant of Daniel God will judge.
| Female | |
| Dantae | Enduring. The poet Dante Alighieri wrote The Divine Comedy with its graphic description of medieval Hell known as Dante's Inferno.
| Male | |
| Dante | lasting | Male | Latin |