| Name | Meaning | Gender | Origin |
|---|
| Maurice | Moor | Male | Latin |
| Max | Little Maximus | Male | Latin |
| Maximilian | Little Maximus | Male | Latin |
| Maximus | The greatest | Male | Latin |
| Maxwell | Maccus's stream | Male | English |
| Mickey | Who is like God? | Unisex | Hebrew |
| Mighty | | Unisex | Hebrew |
| Mini | Something smaller than others of its type | Unisex | English |
| Mister | | Unisex | Hebrew |
| Monet | Solitary | Unisex | French |
| Moxie | Ability to face difficulty with courage. | Unisex | English |
| Munchkin | A very small elflike person. | Unisex | English |
| Murphy | Sea warrior | Male | Gaelic |
| Napoleon | Sons of the mist, a race of dwarves | Male | Germanic |
| Nash | At the ash tree | Male | English |
| Nelson | Son of Neal | Male | English |
| Nemo | No one | Male | Latin |
| Neutron | | Unisex | Hebrew |
| Nibbles | | Unisex | Hebrew |
| Niles | People's Victory | Male | Gaelic |
| Nipper | A small boy | Unisex | English |
| Noel | Christmas | Male | English |
| Nugget | As in Chicken | Unisex | English |
| Nutmeg | | Unisex | Hebrew |
| Odie | Woad hill | Unisex | English |
| Oscar | Divine spear | Male | English |
| Pax | Peace | Unisex | Latin |
| Peaches | Red, yellow skinned fleshy fruit | Unisex | English |
| Peanut | Edible nuts eaten raw or roasted. | Unisex | English |
| Peewee | | Unisex | Hebrew |