| Name | Meaning | Gender | Origin |
|---|
| 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 |
| Lancelot | Knight of Arthur and lover of Guinevere
| Male | |
| Larissa | name of a city, mythical woman; cheerful one | Female | Ltin |
| Laura | bay laurel | Female | Latin |
| Laurel | Laurel
| Female | Latin |
| Lavender | Lavender, A Purple Flower | Female | English |
| Lawson | son of Lawrence | Male | English |
| Layla | night | Female | Arabic |
| Layla | night | Female | Arabic |
| Lewis | Renowned fighter. Form of Louis.
| Male | English |
| Liam | Form of William.
| Male | Irish |
| Lillian | lily, a flower | Female | English |
| Lily | Lily
| Female | English |
| Linda | pretty | Female | |
| Logan | little hollow | Male | Scottish |
| Lola | strong woman | Female | Spanish |
| Lorelei | from the Rhine River | Female | |
| Louis | famed warrior | Male | |
| Luca | man from Lucania | Male | Italian |
| Lucia | Light | Female | Italian |
| Luciana | light | Female | Italian |
| Lucinda | light | Female | English |