- Labiance
- Laburn
- Lafler
- Lahtinen
- Lake
- Lamb
- Lampe
- Lampel
- Lampers
- Lang
- Lansner
- Lapuma
- Lares
- Larry
- Larsen
- Larson
- Lasala
- Lathrop
- Latimer
- Laughery
- Lavoot
- Lawler
- Lawton
- Lazar
- Lazear
- Le
- Leccese
- Ledesma
- Ledezma
- Lee
- Leeper
- Lehman
- Leimer
- Lemus
- Lenz
- Leonard
- Lepage
- Lesser
- Lett
- Leutbecher
- Levindofske
- Levinson
- Lewis
- Liang
- Lichtenstein
- Lichtenwalter
- Lindberg
- Lindner
- Linen
- Lingle
- Linn
- Lipson
- Lira
- Lisenby
- Lish
- Ljungstrom
- Locanto
- Locketz
- Lomax
- Lomeli
- Lomnicky
- Lopez
- Lord
- Lorton
- Lou
- Louie
- Lovejoy
- Lowder
- Lowe
- Lowenberg
- Lozano
- Luca
- Lucero
- Lucio
- Ludwig
- Luna
- Luther
- Luttrell
- Luu
- Luzar
- Ly
- Lynch
- Lyon
- Lyons