| Name | Meaning | Gender | Origin |
|---|
| Mighty | | Unisex | Hebrew |
| Miki | Beautiful story | Female | Japanese |
| Miko | Crimson truth | Male | Japanese |
| Mini | Something smaller than others of its type | Unisex | English |
| Minnie | Will, desire + helmet, protection | Female | Germanic |
| Missy | Bee | Female | Greek |
| Misty | Misty | Female | English |
| 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 |
| Mosquito | | Unisex | Hebrew |
| Moxie | Ability to face difficulty with courage. | Unisex | English |
| Munchkin | A very small elflike person. | Unisex | English |
| Murphy | Sea warrior | Male | Gaelic |
| Nadia | Hope | Female | Russian |
| Nash | At the ash tree | Male | English |
| Needles | A small slender instrument used for sewing. | Unisex | English |
| Nelly | Abbreviation Of Eleanor Shining Light. | Female | English |
| Nibbles | | Unisex | Hebrew |
| Nikki | Victory of the people | Female | Greek |
| Niles | People's Victory | Male | Gaelic |
| Nipper | A small boy | Unisex | English |
| Nova | New | Female | Latin |
| Nugget | As in Chicken | Unisex | English |
| Oliver | Elf army | Male | French |
| Opal | Jewel, gem | Female | Sanskrit |
| Oscar | Divine spear | Male | English |
| Paco | From France | Male | Latin |
| Panda | A bear like Chinese mammal, with distinct black and white markings | Unisex | English |
| Peanut | Edible nuts eaten raw or roasted. | Unisex | English |
| Penny | Weaver | Female | Greek |