| Name | Meaning | Gender | Origin |
|---|
| Mary | Bitter | Female | Hebrew |
| Mason | Bricklayer | Male | French |
| Mathilde | Powerful battler | Female | German |
| Matilda | Powerful battler | Female | Germanic |
| Maura | Moor | Female | Latin |
| Maurice | Moor | Male | Latin |
| Mavis | Song thrush | Male | English |
| Max | Little Maximus | Male | Latin |
| May | The fifth month of the year | Female | English |
| Maya | Uncertain, perhaps mother or great one | Female | Greek |
| Mead | From The Meadow | Male | English |
| Melody | Melody | Female | Greek |
| Mercedes | Mercies | Female | Spanish |
| Mercutio | Related to the god Mercury | Unisex | Latin |
| Merrill | Bright as the sea | Male | Gaelic |
| Mignon | Cute | Female | French |
| Miles | Uncertain, perhaps peaceful | Male | Germanic |
| Mills | Mills | Unisex | English |
| Milo | Uncertain, perhaps peaceful | Male | Germanic |
| Milton | Settlement by the mill | Male | English |
| Mirabelle | Lovely | Female | Latin |
| Miranda | She who must be admired | Female | Latin |
| Misty | Misty | Female | English |
| Molly | Uncertain, maybe bitter | Female | Hebrew |
| Monet | Solitary | Unisex | French |
| Monica | Uncertain, perhaps counsellor | Female | Latin |
| Morley | Grassland by the moor | Male | English |
| Morrison | Son Of The Servant Of Mary | Unisex | English |
| Morton | Settlement by or on a moor | Male | English |
| Moth | | Unisex | Hebrew |