| Name | Meaning | Gender | Origin |
|---|
| Kewpie | | Unisex | Hebrew |
| Kiki | From Enriqueta - Pet | Female | |
| Kiki | From Enriqueta - Pet | Female | |
| Kit | Nickname for Christopher. Frontiersman Kit Carson.
| Male | English |
| Kit Kat | | Unisex | |
| Kit Kat | | Unisex | |
| Kitkat | | Unisex | Hebrew |
| Kitty | Variant of Katherine. Pure.
| Female | English |
| Kitty | Variant of Katherine. Pure.
| Female | English |
| Kitty | Variant of Katherine. Pure.
| Female | English |
| Kiwi | | Unisex | Hebrew |
| Koda | | Male | |
| Kona | Dark rich coffee blend from Hawaii. | Unisex | |
| Lacey | Cheerful One | Female | English |
| Lady | A female title of nobility. | Female | |
| Ladybug | | Female | Hebrew |
| Lancelot | Knight of Arthur and lover of Guinevere
| Male | |
| Leeloo | after the character in the movie The Fifth Element | Unisex | |
| Lena | Alluring, Temptress, Light | Female | Greek |
| Libby | Diminutive of Elizabeth.
| Female | English |
| Lila | night | Female | Arabic |
| Lilly | Lily | Female | English |
| Lilo | generous one | Female | |
| Lily | Lily
| Female | English |
| Lizzie | From Elizabeth - Consecrated to God | Female | English |