| Name | Meaning | Gender | Origin |
|---|
| Margot | Variant of Margaret | Female | |
| Marguerita | | Unisex | Hebrew |
| Marguerite | Pearl | Female | |
| Marilla | Flower | Female | English |
| Marta | Lady Of The House | Female | Italian |
| May | bitter | Female | English |
| Meaghan | Pearl | Unisex | English |
| Meg | Pearl | Female | English |
| Megan | mighty, strong able, pearl | Female | English |
| Meggie | Pearl | Unisex | English |
| Meryl | Bright Sea | Female | English |
| Meta | Ambitious | Unisex | Latin |
| Morgaine | Sea Circle | Unisex | French |
| Morgan | circle; sea | Female | Welsh |
| Morgann | | Unisex | |
| Muriel | myrrh; sea-bright; angel of June | Female | Irish |
| Myer | | Unisex | |
| Nell | Abbreviation of Eleanor shining light.
| Female | English |
| Nellie | the bright one | Female | English |
| Nola | Noble or Famous | Female | Gaelic |
| Nora | Abbreviation of Eleanora light and Honora honor.
| Female | Irish |
| Nova | A star that suddenly becomes much brighter. | Female | Latin |
| Nox | latin for night | Unisex | |
| Nuray | Turkish for white moon | Unisex | |
| Nyx | Greek goddess of night | Female | Greek |