| Name | Meaning | Gender | Origin |
|---|
| Magnum | A large type of wine bottle. | Unisex | English |
| Major | Greater | Male | Latin |
| Malcolm | Columba's servant | Male | Gaelic |
| Mara | Bitter | Female | Hebrew |
| Marshall | Horse servant | Male | Germanic |
| Maverick | Dissenter | Unisex | English |
| Max | Little Maximus | Male | Latin |
| Maximus | The greatest | Male | Latin |
| Mayhem | | Unisex | Hebrew |
| Mercutio | Related to the god Mercury | Unisex | Latin |
| Midnight | Intense darkness, the middle of the night | Unisex | English |
| Mischief | One that causes minor trouble or disturbances | Unisex | English |
| Monster | A creature of frightening appearance | Unisex | English |
| Montana | Mountainous | Unisex | Latin |
| Moose | Largest member of the deer family. Moose have heavy brown bodies with humped shoulders and broad antlers. | Unisex | English |
| Neo | New | Male | English |
| Nero | Stern | Male | Latin |
| Nicholas | Victory of the people | Male | Greek |
| Nimue | The Lady Of The Lake | Female | Welsh |
| Ninja | | Unisex | Hebrew |
| Nipper | A small boy | Unisex | English |
| Norman | Thor mind, Thor courage | Male | Gaelic |
| Nyx | Night | Female | Greek |
| Ophelia | Help | Female | Greek |
| Osiris | Uncertain, perhaps throne of the eye | Unisex | Ancient Egyptian |
| Pablo | Small | Male | Latin |
| Paco | From France | Male | Latin |
| Pandora | All gift | Female | Greek |
| Parker | Gamekeeper of a park | Male | English |
| Pepper | Pepper | Female | English |