| Name | Meaning | Gender | Origin |
|---|
| Kara | pure | Female | English |
| Kate | Pure | Female | English |
| Katniss | | Female | |
| Katniss | | Female | |
| Kaylee | Arabic and Hebrew, laurel, crown | Female | American |
| Kazooie | | Unisex | Hebrew |
| Keiko | Japanese for happy or beloved | Female | Japanese |
| Kelsey | Ceol's island, beautiful island; from the ship's island, shipping harbor | Female | English |
| Kelvin | name of a river; from the narrow river | Male | Scottish |
| Kevin | handsome | Male | Irish |
| Khaleesi | Modern Invented Name | Female | English |
| Kirby | church settlement | Male | Norse |
| Kyle | A place-name referring to the narrows: a wood or a church.
| Male | Scottish |
| Laser | | Male | Hebrew |
| Laszlo | after the character in the movie Real Genius | Male | Hungarian |
| Leela | Playful | Female | Hindu |
| Legolas | Tolkien, Lord of the Rings | Unisex | |
| Leia | Weary | Unisex | Hebrew |
| Leo | Lion.
| Male | Latin |
| Leonard | lion-hearted | Male | |
| Leopold | after Leopoldo in the movie Blood and Roses | Male | |
| Leslie | dweller in the gray castle; small meadow | Female | Scottish |
| Lester | Fortified place.
| Male | English |
| Lewis | Renowned fighter. Form of Louis.
| Male | English |
| Lex | Protector Of Mankind | Male | English |