| Name | Meaning | Gender | Origin |
|---|
| Madonna | my lady | Female | Latin |
| Majesty | | Male | Hebrew |
| Major | Army or Air Force rank above Captain but below Lieutenant Colonel | Male | Latin |
| Mallory | army counseler, without good fortune | Female | |
| Mamie | Mother | Female | English |
| Mara | Sorrowful | Female | Hebrew |
| Marian | Form of Mary | Male | |
| Marissa | of the sea | Female | English |
| Mason | Worker in stone. | Male | English |
| Medea | ruling; middle child | Female | Greek |
| Mel | Scottish, settlement on infertile land | Male | English |
| Melville | hillside; town by the mill | Male | Scottish |
| Melvin | Chief
| Male | English |
| Mitzi | bitter | Female | |
| Molly | Bitter
| Female | English |
| Monique | advisor | Female | |
| Montana | Mountain. | Male | Spanish |
| Morticia | Addams family | Female | |
| Moxie | Ability to face difficulty with courage. | Female | English |
| Murphy | Sea warrior | Male | Irish |
| Nash | cliff | Male | English |
| Oleo | | Unisex | Hebrew |
| Ophelia | Serpentine
| Female | Greek |
| Pandora | talented one | Female | Greek |
| Pansy | thought | Female | English |