| Name | Meaning | Gender | Origin |
|---|
| Kahlua | | Unisex | |
| Kai | Fire
| Male | Hawaiian |
| Kalika | rosebud | Unisex | |
| Kanga | | Male | Hebrew |
| Karma | Fate or destiny (Hinduism and Buddhism) | Female | Hindi |
| Katniss | | Female | |
| Katniss | | Female | |
| Keira | after the actress Keira Knightley | Female | Irish |
| Kilo | | Unisex | Hebrew |
| Kisa | Russian for kitty | Unisex | |
| Kit-Kat | | Unisex | Hebrew |
| Kramer | | Male | |
| Kricket | | Unisex | Hebrew |
| Kudzu | | Unisex | |
| Kylie | Boomerang. Feminine form of Kyle.
| Female | Aboriginal |
| Lace | From Lassy, Normandy | Unisex | English |
| Lampshade | | Unisex | |
| Lance | knight's attendant; land | Male | English |
| Latte | Expresso coffee mixed with steamed milk - a caf latte. | Male | |
| Lefty | Left handed person. Member of the political left. | Unisex | |
| Legolas | Tolkien, Lord of the Rings | Unisex | |
| Leia | Weary | Unisex | Hebrew |
| Leon | lion | Male | Greek |
| Libby | Diminutive of Elizabeth.
| Female | English |
| Liberty | Free
| Female | Word |