| Name | Meaning | Gender | Origin |
|---|
| Mandy | She who must be loved | Female | Latin |
| Mara | Bitter | Female | Hebrew |
| Marble | | Unisex | Hebrew |
| Max | Little Maximus | Male | Latin |
| Maximus | The greatest | Male | Latin |
| Maxy | Little Maximus | Unisex | Latin |
| May | The fifth month of the year | Female | English |
| Maya | Uncertain, perhaps mother or great one | Female | Greek |
| Meg | Pearl | Female | Greek |
| Mick | Who is like God? | Male | Hebrew |
| Mickey | Who is like God? | Unisex | Hebrew |
| Miller | Grinder of grain | Male | English |
| Millie | Labour | Female | Germanic |
| Missy | Bee | Female | Greek |
| Misty | Misty | Female | English |
| Mollie | Uncertain, maybe bitter | Female | Hebrew |
| Molly | Uncertain, maybe bitter | Female | Hebrew |
| Moose | Largest member of the deer family. Moose have heavy brown bodies with humped shoulders and broad antlers. | Unisex | English |
| Murphy | Sea warrior | Male | Gaelic |
| Mylo | Uncertain, perhaps peaceful | Unisex | Germanic |
| Naomi | Beautiful, pleasant, delightful | Female | Hebrew |
| Nina | Strong | Female | Latin |
| Nipper | A small boy | Unisex | English |
| Nova | New | Female | Latin |
| Nugget | As in Chicken | Unisex | English |
| Orion | Son Of Fire | Male | Greek |
| Oscar | Divine spear | Male | English |
| Otto | Wealth | Male | German |
| Patches | | Unisex | Hebrew |
| Pax | Peace | Unisex | Latin |