| Name | Meaning | Gender | Origin |
|---|
| Leland | Land lying fallow | Male | English |
| Leo | Lion | Male | Latin |
| Leopold | Bold people | Male | Germanic |
| Lestat | | Unisex | Hebrew |
| Lester | From Leicester | Male | English |
| Lewis | Fame and war | Male | Germanic |
| Lex | Defending men | Unisex | Greek |
| Link | Left hand | Unisex | German |
| Linus | Flaxen-Haired | Male | Greek |
| Logan | Hollow | Unisex | Gaelic |
| Lorna | From Laurentium: The Place Of The Laurel Trees: Place Of Honor And Victory. Feminine Of Lawrence. | Female | English |
| Louis | Fame and war | Male | Germanic |
| Lowell | Wolf | Male | English |
| Luigi | Fame + war | Male | Germanic |
| Luke | Man from Lucania | Male | Greek |
| Lyle | Island | Male | French |
| Mario | From the god Mars | Male | Latin |
| Marshall | Horse servant | Male | Germanic |
| Maximus | The greatest | Male | Latin |
| Maxwell | Maccus's stream | Male | English |
| Maynard | Mighty and brave | Male | Germanic |
| Melvin | Uncertain, possibly bad town | Male | English |
| Mercer | Vendor of sewing materials | Male | French |
| Merlin | Sea fort | Male | Welsh |
| Mervin | Uncertain, possibly eminent marrow | Male | Welsh |
| Milo | Uncertain, perhaps peaceful | Male | Germanic |
| Milton | Settlement by the mill | Male | English |
| Mordecai | Little man | Male | Hebrew |
| Murray | Man of the sea | Male | Gaelic |
| Neo | New | Male | English |