| Name | Meaning | Gender | Origin |
|---|
| Mackenzie | Son of Coinneach | Male | Gaelic |
| Macy | Place of Maccius | Male | English |
| Maddie | Pet form of Mad- names | Unisex | English |
| Madison | Son of Maud | Unisex | English |
| Max | Little Maximus | Male | Latin |
| Maximus | The greatest | Male | Latin |
| Mickey | Who is like God? | Unisex | Hebrew |
| Milo | Uncertain, perhaps peaceful | Male | Germanic |
| Mocha | Coffee of high quality. | Unisex | English |
| Moose | Largest member of the deer family. Moose have heavy brown bodies with humped shoulders and broad antlers. | Unisex | English |
| Murphy | Sea warrior | Male | Gaelic |
| Nugget | As in Chicken | Unisex | English |
| Oliver | Elf army | Male | French |
| Ollie | Elf army | Male | French |
| Oreo | American cookie brand consisting of two chocolate wafers with white cream filling. | Unisex | English |
| Oscar | Divine spear | Male | English |
| Otis | One who hears well | Male | Greek |
| Otto | Wealth | Male | German |
| Owen | Well born, yew born | Male | Gaelic |
| Peanut | Edible nuts eaten raw or roasted. | Unisex | English |
| Pepsi | Brand of cola soft drink. | Unisex | English |
| Prince | Royal son | Male | English |
| Rebel | One that resists of defies authority | Unisex | English |
| Rene | Reborn | Male | English |
| Rex | King | Male | Latin |
| Ricky | Strong power | Male | French |
| Riley | Rye clearing | Male | English |
| Rocco | Battle cry | Male | Germanic |
| Rockwell | Rocky stream | Male | English |
| Rocky | Battle cry | Male | Germanic |