| Name | Meaning | Gender | Origin |
|---|
| Cinnamon | | Female | Hebrew |
| Clarinet | | Female | Hebrew |
| Claudette | Feminine of Claude.
| Female | |
| Coco | A pet name.
| Female | Spanish |
| Coco | A pet name.
| Female | Spanish |
| Coco | A pet name.
| Female | Spanish |
| Confucius | Not available | Male | English |
| Congo | | Male | Hebrew |
| Corann | Mythical druid
| Male | |
| Corngold | | Female | |
| Cricket | A leaping insect | Female | Nature |
| Crookshanks | Hermione's cat in the Harry Potter books | Unisex | |
| Crookshanks | | Unisex | Hebrew |
| Crystal | Variant of Christiana. Follower of Christ.
| Female | |
| Crystal | Variant of Christiana. Follower of Christ.
| Female | |
| Cuarto | Born fourth
| Male | Spanish |
| Cub | | Unisex | |
| Cyntia | Variant of Greek name Cynthia - one of the names of the mythological mood goddess Artemis referring to her birth on Mount Cynthus.
| Female | |
| Dab | | Male | |
| Daisy | Day's eye. A flower name.
| Female | |
| Daisy | Day's eye. A flower name.
| Female | |
| Damario | Masculine form of the Greek Damaris gentle.
| Male | Spanish |
| Damh | Ox
| Male | |
| Dave | David's son
| Male | Short |
| Debra | Bee. Deborah was the Biblical prophetess who summoned Barak to battle against an army of invaders. After the battle she wrote a victory song which is part of the Book of Judges.
| Female | Spelling |