| Name | Meaning | Gender | Origin |
|---|
| Max | Little Maximus | Male | Latin |
| Maxim | The greatest | Male | Latin |
| Maya | Uncertain, perhaps mother or great one | Female | Greek |
| Maybell | Beautiful 5Th Month | Unisex | English |
| Meadow | A meadow | Female | English |
| Melba | Short form of Melbourne | Female | English |
| Melody | Melody | Female | Greek |
| Melva | Handmaiden | Female | English |
| Mercedes | Mercies | Female | Spanish |
| Merle | Contracted form of Meriel | Female | English |
| Merlin | Sea fort | Male | Welsh |
| Merry | Compassion | Female | English |
| Mia | Uncertain, maybe bitter | Female | Hebrew |
| Michel | Who is like God? | Male | Hebrew |
| Michele | Who is like God? | Female | Hebrew |
| Micro | | Unisex | Hebrew |
| Midnight | Intense darkness, the middle of the night | Unisex | English |
| Miles | Uncertain, perhaps peaceful | Male | Germanic |
| Milli | Labour | Unisex | Germanic |
| Millie | Labour | Female | Germanic |
| Milo | Uncertain, perhaps peaceful | Male | Germanic |
| Milton | Settlement by the mill | Male | English |
| Mimi | Uncertain, maybe bitter | Female | Hebrew |
| Mindy | Pet form of Melinda | Female | English |
| Mio | Beautiful cherry | Male | Japanese |
| Miranda | She who must be admired | Female | Latin |
| Mischief | One that causes minor trouble or disturbances | Unisex | English |
| Missy | Bee | Female | Greek |
| Mist | | Unisex | Hebrew |
| Mister | | Unisex | Hebrew |