| Name | Meaning | Gender | Origin |
|---|
| Martin | From the god Mars | Male | Latin |
| Mason | Bricklayer | Male | French |
| Max | Little Maximus | Male | Latin |
| Merlin | Sea fort | Male | Welsh |
| Micheal | Form Of Michael Who Is Like God? | Unisex | English |
| Midnight | Intense darkness, the middle of the night | Unisex | English |
| Moose | Largest member of the deer family. Moose have heavy brown bodies with humped shoulders and broad antlers. | Unisex | English |
| Mortimer | Dead sea | Male | French |
| Muffin | A small cup shaped cake | Unisex | English |
| Munchkin | A very small elflike person. | Unisex | English |
| Nash | At the ash tree | Male | English |
| Nathanial | Gift of god | Male | Hebrew |
| Neal | Champion | Male | Gaelic |
| Nero | Stern | Male | Latin |
| Nibbles | | Unisex | Hebrew |
| Nicholas | Victory of the people | Male | Greek |
| Nicky | Victory of the people | Unisex | Greek |
| Nipper | A small boy | Unisex | English |
| Nish | | Unisex | Hebrew |
| Noah | Rest | Male | Hebrew |
| Noel | Christmas | Male | English |
| Noelle | Day of birth | Unisex | Latin |
| Nolan | Chariot-fighter, champion | Male | Gaelic |
| Oakley | From the oak meadow | Male | English |
| October | Eighth | Unisex | English |
| Odell | Woad hill | Male | English |
| Oliver | Elf army | Male | French |
| Ollie | Elf army | Male | French |
| Onyx | A gemstone with bands of different colours. | Unisex | English |
| Oreo | American cookie brand consisting of two chocolate wafers with white cream filling. | Unisex | English |