| Name | Meaning | Gender | Origin |
|---|
| Jovan | Jove-like, majestic | Male | Slavic |
| Jules | youthful; soft, downy | Male | |
| Julius | after Julius Caesar | Male | Latin |
| Kari | curly hair | Male | Norse |
| Klara | Clear, Bright | Unisex | Scandinavian |
| Lace | From Lassy, Normandy | Unisex | English |
| Lacy | Derived from Lacey which is a French Nobleman's surname brought to British Isles after Norman conquest.
| Male | |
| Lafayette | Hound Dog from the AristoCats
| Male | |
| Lamar | land | Male | English |
| Lance | knight's attendant; land | Male | English |
| Lancelot | Knight of Arthur and lover of Guinevere
| Male | |
| Langley | Residence Name | Male | English |
| Latimer | interpreter | Unisex | |
| Launcelot | Knight of Arthur and lover of Guinevere
| Male | |
| Leon | lion | Male | Greek |
| Leonard | lion-hearted | Male | |
| Leonela | Lion; Lioness. Feminine Of Leon. | Unisex | French |
| Leopold | after Leopoldo in the movie Blood and Roses | Male | |
| Leroy | The king.
| Male | |
| Lili | Consecrated To God | Unisex | German |
| Lionel | Cousin of Lancelot
| Male | Latin |
| Louie | renowned warrier | Male | English |
| Louis | famed warrior | Male | |
| Luc | man from Lucania | Male | |
| Luce | Of Lucania | Unisex | French |