| Name | Meaning | Gender | Origin |
|---|
| Mischief | One that causes minor trouble or disturbances | Unisex | English |
| Missy | Bee | Female | Greek |
| Misty | Misty | Female | English |
| Mita | Friend | Female | Sanskrit |
| Mohini | Charming | Female | Sanskrit |
| Molly | Uncertain, maybe bitter | Female | Hebrew |
| Monster | A creature of frightening appearance | Unisex | English |
| Moose | Largest member of the deer family. Moose have heavy brown bodies with humped shoulders and broad antlers. | Unisex | English |
| Mufasa | From The Lion King | Unisex | English |
| Muffin | A small cup shaped cake | Unisex | English |
| Munchkin | A very small elflike person. | Unisex | English |
| Mya | Uncertain, perhaps mother or great one | Female | Greek |
| Mylo | Uncertain, perhaps peaceful | Unisex | Germanic |
| Nalin | Lotus Flower | Unisex | Hindu |
| Nancy | Grace | Female | Hebrew |
| Nandita | Making other comfortable, glad | Female | Indian |
| Neha | Cherished, beauty | Female | Indian |
| Nile | From The Nile | Female | Gaelic |
| Nipper | A small boy | Unisex | English |
| Obie | O.B. | Unisex | English |
| Olive | Olive | Female | English |
| Oreo | American cookie brand consisting of two chocolate wafers with white cream filling. | Unisex | English |
| Panda | A bear like Chinese mammal, with distinct black and white markings | Unisex | English |
| Patsy | A patrician | Female | Latin |
| Peanut | Edible nuts eaten raw or roasted. | Unisex | English |
| Pebbles | After the character in 'The Flintstones' cartoons | Female | English |
| Penny | Weaver | Female | Greek |
| Pepper | Pepper | Female | English |
| Phoebe | Bright | Female | Greek |
| Pip | Lover of horses | Unisex | Greek |