| Name | Meaning | Gender | Origin |
|---|
| Lucky | Fortunate | Unisex | English |
| Lucy | Light | Female | Latin |
| Mabel | Lovable | Female | French |
| Maddy | Pet form of Mad- names | Female | English |
| Mae | The fifth month of the year | Female | English |
| Maggie | Pearl | Female | Greek |
| Magpie | | Unisex | Hebrew |
| Major | Greater | Male | Latin |
| Martin | From the god Mars | Male | Latin |
| Max | Little Maximus | Male | Latin |
| Mickey | Who is like God? | Unisex | Hebrew |
| Mildred | Gentle strength | Female | English |
| Millie | Labour | Female | Germanic |
| Minnie | Will, desire + helmet, protection | Female | Germanic |
| Missy | Bee | Female | Greek |
| Misty | Misty | Female | English |
| Molly | Uncertain, maybe bitter | Female | Hebrew |
| Moses | Drawn out of the water | Male | Hebrew |
| Murphy | Sea warrior | Male | Gaelic |
| Myra | Uncertain, perhaps myrrh, unguent | Female | Latin |
| Myrtle | Myrtle | Female | English |
| Mystic | | Unisex | Hebrew |
| Nancy | Grace | Female | Hebrew |
| Napoleon | Sons of the mist, a race of dwarves | Male | Germanic |
| Neptune | God of the sea | Unisex | Latin |
| Nina | Strong | Female | Latin |
| Norah | Light | Female | English |
| Nutmeg | | Unisex | Hebrew |
| Opal | Jewel, gem | Female | Sanskrit |
| Oscar | Divine spear | Male | English |