| Name | Meaning | Gender | Origin |
|---|
| Maximilian | Little Maximus | Male | Latin |
| Maxwell | Maccus's stream | Male | English |
| Maynard | Mighty and brave | Male | Germanic |
| Melvin | Uncertain, possibly bad town | Male | English |
| Mercer | Vendor of sewing materials | Male | French |
| Meredith | Great lord | Female | Welsh |
| Meyer | He who illuminates | Male | Hebrew |
| Miles | Uncertain, perhaps peaceful | Male | Germanic |
| Miller | Grinder of grain | Male | English |
| Milton | Settlement by the mill | Male | English |
| Monroe | Mouth of the River Roe | Male | Gaelic |
| Monty | Gomeric's hill | Male | French |
| Morgan | Uncertain, perhaps bright sea | Female | Welsh |
| Morris | Moor | Male | Latin |
| Mortimer | Dead sea | Male | French |
| Morton | Settlement by or on a moor | Male | English |
| Murray | Man of the sea | Male | Gaelic |
| Myron | Myrrh | Male | Greek |
| Napoleon | Sons of the mist, a race of dwarves | Male | Germanic |
| Nelson | Son of Neal | Male | English |
| Newton | New settlement, new enclosure | Male | English |
| Niles | People's Victory | Male | Gaelic |
| Norman | Thor mind, Thor courage | Male | Gaelic |
| Norris | Northener | Unisex | French |
| Oakley | From the oak meadow | Male | English |
| Obie | O.B. | Unisex | English |
| Oliver | Elf army | Male | French |
| Ollie | Elf army | Male | French |
| Opal | Jewel, gem | Female | Sanskrit |
| Orson | Bear | Male | French |