| Name | Meaning | Gender | Origin |
|---|
| Junior | Youthful person. Used to distinguish son from father where they have the same name | Male | Latin |
| Juno | queen of the heavens | Female | Latin |
| Justice | Just, Fairness | Female | English |
| Kali | after the Indian goddess of death | Female | Sanskrit |
| Kalli | Energy, Black Goddess | Unisex | Hindu |
| Kashmir | Name Of A State In India Kasi | Female | Hindi |
| Kat | pure | Female | English |
| Katana | Sword | Unisex | Japanese |
| Katie | Variant of Katherine. Pure.
| Female | English |
| Khaleesi | Modern Invented Name | Female | English |
| Khatt | | Unisex | Hebrew |
| Kibbles | | Unisex | Hebrew |
| Kibbles | | Unisex | |
| Kidder | | Unisex | Hebrew |
| Kiki | From Enriqueta - Pet | Female | |
| Kiki | From Enriqueta - Pet | Female | |
| Kimbo | | Unisex | |
| King | King's field. King is one of several titles occasionally used as given names.
| Male | English |
| Kismet | fate, destiny | Female | Word |
| Kit | Nickname for Christopher. Frontiersman Kit Carson.
| Male | English |
| Kitty | Variant of Katherine. Pure.
| Female | English |
| Kitty | Variant of Katherine. Pure.
| Female | English |
| Kitty | Variant of Katherine. Pure.
| Female | English |
| Kiwi | | Unisex | Hebrew |
| Klaus | Scandinavian and German variation of Nicolas | Male | |