| Name | Meaning | Gender | Origin |
|---|
| Marcus | From the god Mars | Male | Latin |
| Marin | From the god Mars | Unisex | Latin |
| Marlin | A Form Of Merle. | Unisex | English |
| Marquis | Lord of the marches | Male | French |
| Marshall | Horse servant | Male | Germanic |
| Martin | From the god Mars | Male | Latin |
| Marvel | Miracle | Unisex | English |
| Marvin | Uncertain, possibly eminent marrow | Male | Welsh |
| Mason | Bricklayer | Male | French |
| Maverick | Dissenter | Unisex | English |
| Max | Little Maximus | Male | Latin |
| Maximillian | Little Maximus | Male | Latin |
| Maxwell | Maccus's stream | Male | English |
| Mayer | Clever | Male | Hebrew |
| Maynard | Mighty and brave | Male | Germanic |
| Mckenna | Son of Cionaodh | Unisex | Gaelic |
| Medwin | Powerful friend | Male | German |
| Meir | He who illuminates | Male | Hebrew |
| Melville | Bad town | Male | French |
| Melvin | Uncertain, possibly bad town | Male | English |
| Menachem | One who comforts | Male | Hebrew |
| Merlin | Sea fort | Male | Welsh |
| Merrill | Bright as the sea | Male | Gaelic |
| Merritt | Boundary gate | Unisex | English |
| Merton | Settlement by the lake | Unisex | English |
| Mervin | Uncertain, possibly eminent marrow | Male | Welsh |
| Michel | Who is like God? | Male | Hebrew |
| Miles | Uncertain, perhaps peaceful | Male | Germanic |
| Miller | Grinder of grain | Male | English |
| Milo | Uncertain, perhaps peaceful | Male | Germanic |