| Name | Meaning | Gender | Origin |
|---|
| Moose | Largest member of the deer family. Moose have heavy brown bodies with humped shoulders and broad antlers. | Unisex | |
| Moppet | A young child. | Unisex | |
| Morning Glory | | Unisex | Hebrew |
| Morticia | Addams family | Female | |
| Mosaic | | Unisex | |
| Mouse | A small rodent with a long tail and small rounded ears. | Unisex | |
| Mr. Bill | | Unisex | Hebrew |
| Muffin | A small cup shaped cake | Unisex | |
| Mugger | | Unisex | Hebrew |
| Muriel | myrrh; sea-bright; angel of June | Female | Irish |
| Mushka | | Unisex | Hebrew |
| Music | | Female | |
| Musk | | Unisex | |
| Myer | | Unisex | |
| Mykah | | Unisex | Hebrew |
| Myra | sweet-smelling oil | Female | Greek |
| Nadia | hope | Female | Russian |
| Nana | A grandmother. | Female | English |
| Nancy | full of grace | Female | English |
| Natalie | birthday of the Lord | Female | |
| Nellie | the bright one | Female | English |
| Neopolatin | | Unisex | Hebrew |
| Nepeta | | Unisex | |
| Nessie | From Agnes - Pure and chaste. | Female | |
| Ngaio | after New Zealand mystery writer Ngaio Marsh | Female | Maori |