| Name | Meaning | Gender | Origin |
|---|
| Kara | pure | Female | English |
| Karis | Graceful.
| Female | |
| Kasey | Vigilant, Watchful | Female | English |
| Kasper | treasurer | Male | Persian |
| Katie | Variant of Katherine. Pure.
| Female | English |
| Kayla | crown of laurels | Female | Arabic |
| Keira | after the actress Keira Knightley | Female | Irish |
| Kelly | Lively: aggressive.
| Female | Irish |
| Kennedy | misshapen head | Female | Irish |
| Killian | church | Male | Irish |
| Kirk | church | Male | Norse |
| Kitty | Variant of Katherine. Pure.
| Female | English |
| Kitty | Variant of Katherine. Pure.
| Female | English |
| Kitty | Variant of Katherine. Pure.
| Female | English |
| Koko | stork | Female | Japanese |
| Koneko | | Unisex | Hebrew |
| Kylie | Boomerang. Feminine form of Kyle.
| Female | Aboriginal |
| Kym | Royal Meadow | Unisex | English |
| Lacey | Cheerful One | Female | English |
| Lacy | Derived from Lacey which is a French Nobleman's surname brought to British Isles after Norman conquest.
| Male | |
| Lana | Attractive | Female | English |
| Lauren | bay laurel | Female | English |
| Layla | night | Female | Arabic |
| Layla | night | Female | Arabic |
| Lenore | Torch | Female | English |