| Name | Meaning | Gender | Origin |
|---|
| Matt | Gift of God | Male | Hebrew |
| Max | Little Maximus | Male | Latin |
| Maximus | The greatest | Male | Latin |
| Maxwell | Maccus's stream | Male | English |
| Maynard | Mighty and brave | Male | Germanic |
| Mel | Uncertain, possibly bad town | Unisex | English |
| Mickey | Who is like God? | Unisex | Hebrew |
| Midnight | Intense darkness, the middle of the night | Unisex | English |
| Mighty | | Unisex | Hebrew |
| Miko | Crimson truth | Male | Japanese |
| Mocha | Coffee of high quality. | Unisex | English |
| Monte | Gomeric's hill | Male | French |
| Moose | Largest member of the deer family. Moose have heavy brown bodies with humped shoulders and broad antlers. | Unisex | English |
| Moxie | Ability to face difficulty with courage. | Unisex | English |
| Mozart | | Unisex | Hebrew |
| Muffin | A small cup shaped cake | Unisex | English |
| Munchkin | A very small elflike person. | Unisex | English |
| Murphy | Sea warrior | Male | Gaelic |
| Nelson | Son of Neal | Male | English |
| Nemo | No one | Male | Latin |
| Newton | New settlement, new enclosure | Male | English |
| Nibbles | | Unisex | Hebrew |
| Nipper | A small boy | Unisex | English |
| Nugget | As in Chicken | Unisex | English |
| Nutmeg | | Unisex | Hebrew |
| Oliver | Elf army | Male | French |
| Oreo | American cookie brand consisting of two chocolate wafers with white cream filling. | Unisex | English |
| Orion | Son Of Fire | Male | Greek |
| Oscar | Divine spear | Male | English |
| Othello | Wealth | Male | German |