| Name | Meaning | Gender | Origin |
|---|
| Lincoln | Lake settlement, lake colony | Male | English |
| Lindley | Flax wood/clearing, lime tree wood | Unisex | English |
| Linwood | From The Linden Tree Dell. | Male | English |
| Lisle | Island | Unisex | French |
| Livingston | Levin stone | Male | English |
| Lloyd | Grey | Male | Welsh |
| Locke | A locksmith | Female | English |
| Lorraine | Of Lothair | Female | French |
| Lyndon | Lime tree hill | Male | English |
| Lynn | Dwells By The Torrent | Female | English |
| Lysander | Freeing a man | Male | Greek |
| Madison | Son of Maud | Unisex | English |
| Maine | Mainland | Female | French |
| Maisie | Pet form of Mairead | Female | Gaelic |
| Manhattan | Whiskey | Female | English |
| Marcellus | Little Marcus | Male | Latin |
| Marcy | From the god Mars | Female | Latin |
| Marion | Uncertain, maybe bitter | Female | Hebrew |
| Marshall | Horse servant | Male | Germanic |
| Matilda | Powerful battler | Female | Germanic |
| Maximus | The greatest | Male | Latin |
| Melville | Bad town | Male | French |
| Meredith | Great lord | Female | Welsh |
| Merrick | Moor | Male | Welsh |
| Mexico | | Unisex | Hebrew |
| Milo | Uncertain, perhaps peaceful | Male | Germanic |
| Milton | Settlement by the mill | Male | English |
| Mina | Will, desire + helmet, protection | Female | Germanic |
| Minerva | Mind | Female | Latin |
| Mohawk | Native American Tribe Name | Male | Native American |