| Name | Meaning | Gender | Origin |
|---|
| Lex | Defending men | Unisex | Greek |
| Lincoln | Lake settlement, lake colony | Male | English |
| Lindsey | Lincoln island | Unisex | English |
| Louis | Fame and war | Male | Germanic |
| Love | Love | Female | English |
| Lucien | Light | Male | Latin |
| Ludwig | Fame and war | Male | Germanic |
| Luther | People army | Male | Germanic |
| Lyndon | Lime tree hill | Male | English |
| Madison | Son of Maud | Unisex | English |
| Mae | The fifth month of the year | Female | English |
| Magdalena | Of Magdala | Female | Hebrew |
| Manley | Common clearing | Male | English |
| Manson | Son of Magnus | Unisex | English |
| Margaret | Pearl | Female | Greek |
| Marilyn | Uncertain, maybe bitter | Female | Hebrew |
| Marlene | Of Magdala | Female | Hebrew |
| Marlon | Little Falcon | Male | English |
| Martin | From the god Mars | Male | Latin |
| Max | Little Maximus | Male | Latin |
| Maxwell | Maccus's stream | Male | English |
| Maya | Uncertain, perhaps mother or great one | Female | Greek |
| Merrill | Bright as the sea | Male | Gaelic |
| Meyer | He who illuminates | Male | Hebrew |
| Miles | Uncertain, perhaps peaceful | Male | Germanic |
| Millard | Guardian of the mill | Male | English |
| Miller | Grinder of grain | Male | English |
| Milo | Uncertain, perhaps peaceful | Male | Germanic |
| Minerva | Mind | Female | Latin |
| Mitchel | Who is like God? | Male | Hebrew |