| Name | Meaning | Gender | Origin |
|---|
| Martin | From the god Mars | Male | Latin |
| Mathilda | Powerful battler | Female | Germanic |
| Matty | Gift of God | Unisex | Hebrew |
| Maud | Powerful battler | Female | German |
| Max | Little Maximus | Male | Latin |
| Maximus | The greatest | Male | Latin |
| Mayer | Clever | Male | Hebrew |
| Medwin | Powerful friend | Male | German |
| Melissa | Honey-bee | Female | Greek |
| Mercedes | Mercies | Female | Spanish |
| Meta | Ambitious | Female | Latin |
| Mia | Uncertain, maybe bitter | Female | Hebrew |
| Miles | Uncertain, perhaps peaceful | Male | Germanic |
| Milla | Industrious | Female | English |
| Millicent | Strong work | Female | Germanic |
| Millie | Labour | Female | Germanic |
| Milo | Uncertain, perhaps peaceful | Male | Germanic |
| Mina | Will, desire + helmet, protection | Female | Germanic |
| Mine | A resolute protector | Female | English |
| Minna | Form Of Williamina | Female | English |
| Minnie | Will, desire + helmet, protection | Female | Germanic |
| Missy | Bee | Female | Greek |
| Misty | Misty | Female | English |
| Mitzi | Uncertain, maybe bitter | Unisex | Hebrew |
| Molly | Uncertain, maybe bitter | Female | Hebrew |
| Morgen | Sea-born | Female | Welsh |
| Mozart | | Unisex | Hebrew |
| Murphy | Sea warrior | Male | Gaelic |
| Nadia | Hope | Female | Russian |
| Ned | Wealth protector | Unisex | English |