| Name | Meaning | Gender | Origin |
|---|
| Maddie | Pet form of Mad- names | Unisex | English |
| Madison | Son of Maud | Unisex | English |
| Magic | Possessing qualities that produce baffling effects | Unisex | English |
| Maisy | Pearl. Variant Of Margaret. | Unisex | English |
| Malibu | Noisy Surf | Unisex | Native American |
| Manning | Descendent of MainnÃn | Male | Gaelic |
| Manny | God is with us | Male | Hebrew |
| Max | Little Maximus | Male | Latin |
| Maxie | Pet form of names starting with Max | Unisex | English |
| Merlin | Sea fort | Male | Welsh |
| Midnight | Intense darkness, the middle of the night | Unisex | English |
| Miles | Uncertain, perhaps peaceful | Male | Germanic |
| Moca | | Unisex | Hebrew |
| Mocha | Coffee of high quality. | Unisex | English |
| Moe | Moor | Male | Latin |
| Monty | 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 |
| Muffin | A small cup shaped cake | Unisex | English |
| Murphy | Sea warrior | Male | Gaelic |
| Mystic | | Unisex | Hebrew |
| Ninja | | Unisex | Hebrew |
| Oliver | Elf army | Male | French |
| Olly | Elf army | Unisex | English |
| 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 |
| Oscar | Divine spear | Male | English |
| Othello | Wealth | Male | German |
| Otis | One who hears well | Male | Greek |
| Peewee | | Unisex | Hebrew |
| Petey | Stone | Unisex | Greek |