| Name | Meaning | Gender | Origin |
|---|
| Mac | Son of | Male | Gaelic |
| Maddy | Pet form of Mad- names | Female | English |
| Mae | The fifth month of the year | Female | English |
| Maggie | Pearl | Female | Greek |
| Magnum | A large type of wine bottle. | Unisex | English |
| Mali | Flower | Female | Thai |
| Mani | Jewel | Unisex | Sanskrit |
| Manley | Common clearing | Male | English |
| Mara | Bitter | Female | Hebrew |
| Marlow | Drained lake | Male | English |
| Max | Little Maximus | Male | Latin |
| Maxi | Pet form of names starting with Max | Unisex | English |
| Megan | Pearl | Female | Greek |
| Mikey | Who is like God? | Unisex | Hebrew |
| Missy | Bee | Female | Greek |
| Misty | Misty | Female | English |
| Molly | Uncertain, maybe bitter | Female | Hebrew |
| Momo | Gangster from the movie Get Shorty | Female | English |
| Moose | Largest member of the deer family. Moose have heavy brown bodies with humped shoulders and broad antlers. | Unisex | English |
| Ned | Wealth protector | Unisex | English |
| Ninja | | Unisex | Hebrew |
| Noi | | Male | Hebrew |
| Nugget | As in Chicken | Unisex | English |
| Opal | Jewel, gem | Female | Sanskrit |
| Oscar | Divine spear | Male | English |
| Penny | Weaver | Female | Greek |
| Phoebe | Bright | Female | Greek |
| Pickles | Food flavored in a solution of vinegar | Unisex | English |
| Pierce | Stone | Male | Greek |
| Piglet | | Unisex | Hebrew |