| Name | Meaning | Gender | Origin |
|---|
| Mildred | Gentle strength | Female | English |
| Miles | Uncertain, perhaps peaceful | Male | Germanic |
| Milo | Uncertain, perhaps peaceful | Male | Germanic |
| Missy | Bee | Female | Greek |
| Misty | Misty | Female | English |
| Mitzi | Uncertain, maybe bitter | Unisex | Hebrew |
| Molly | Uncertain, maybe bitter | Female | Hebrew |
| Moose | Largest member of the deer family. Moose have heavy brown bodies with humped shoulders and broad antlers. | Unisex | English |
| Mortimer | Dead sea | Male | French |
| Murphy | Sea warrior | Male | Gaelic |
| Nan | Grace | Female | Hebrew |
| Neil | Champion | Male | Gaelic |
| Nikki | Victory of the people | Female | Greek |
| Ninja | | Unisex | Hebrew |
| Nixie | Little Water Sprite | Female | American English |
| Obert | Famous for his inheritance | Unisex | Germanic |
| Odetta | Wealth | Female | Germanic |
| Olga | Holy | Female | German |
| Ollie | Elf army | Male | French |
| Opal | Jewel, gem | Female | Sanskrit |
| Orman | Forest | Male | Turkish |
| Oscar | Divine spear | Male | English |
| Otto | Wealth | Male | German |
| Paige | Page | Female | English |
| Penny | Weaver | Female | Greek |
| Pepper | Pepper | Female | English |
| Pete | Stone | Male | Greek |
| Phoebe | Bright | Female | Greek |
| Phoenix | Phoenix | Male | Greek |
| Pippin | Foreigner, stranger | Unisex | Latin |