- Lafayette
- Lamar
- Lamarr
- Lance
- Lancelin
- Lancelot
- Landers
- Landis
- Langley
- Laramie
- Larue
- Lasalle
- Latimer
- Launce
- Launcelot
- Laurent
- Leal
- Leeroy
- Legget
- Lenard
- Lennard
- Leon
- Leonard
- Leonce
- Leone
- Leonore
- Leroi
- Leron
- Leroux
- Leroy
- Leveret
- Leverett
- Lewis
- Lionel
- Lionell
- Lisle
- Lonell
- Lonnell
- Loring
- Lou
- Louie
- Louis
- Louvel
- Lovell
- Lowe
- Lowell
- Loyal
- Luc
- Lucian
- Lucien
- Ludovic
- Lyle