| Name | Meaning | Gender | Origin |
|---|
| Karlo | | Unisex | Hebrew |
| Katarina | pure | Female | Czech |
| Katrina | Greek, pure | Female | |
| Kelby | Dark: dark-haired.
| Male | English |
| Kelsey | Ceol's island, beautiful island; from the ship's island, shipping harbor | Female | English |
| Kirby | church settlement | Male | Norse |
| Kirk | church | Male | Norse |
| Kirsten | christian; stone church | Female | Scandinavian |
| Klara | Clear, Bright | Unisex | Scandinavian |
| Kristen | Anointed, Follower Of Christ | Female | Danish |
| Kristopher | Greek and Latin, bearer of Christ | Male | Greek |
| Kristy | Anointed, Follower Of Christ | Female | English |
| Laila | Night, dark beauty.
| Female | Spelling |
| Lamont | Man Of Law | Male | Scottish |
| Lars | after the Metallica drummer Lars Ulrich | Male | Scandinavian |
| Larsen | | Unisex | |
| Laura | bay laurel | Female | Latin |
| Leif | heir, descendant | Male | Scandinavian |
| Lena | Alluring, Temptress, Light | Female | Greek |
| Liam | Form of William.
| Male | Irish |
| Linn | Beautiful | Unisex | English |
| Loke | Viking mythology: the untrustworthy god | Unisex | |
| Love | loved one | Female | Word |
| Lucas | Form of Luke light: illumination.
| Male | Latin |
| Magnus | One who is great.
| Male | Latin |