| Name | Meaning | Gender | Origin |
|---|
| Mercy | Compassion | Female | English |
| Mia | Uncertain, maybe bitter | Female | Hebrew |
| Midnight | Intense darkness, the middle of the night | Unisex | English |
| Mimi | Uncertain, maybe bitter | Female | Hebrew |
| Missy | Bee | Female | Greek |
| Misty | Misty | Female | English |
| Molly | Uncertain, maybe bitter | Female | Hebrew |
| Moon | Letters | Female | Korean |
| Moose | Largest member of the deer family. Moose have heavy brown bodies with humped shoulders and broad antlers. | Unisex | English |
| Morgan | Uncertain, perhaps bright sea | Female | Welsh |
| Nikki | Victory of the people | Female | Greek |
| Ninja | | Unisex | Hebrew |
| Nugget | As in Chicken | Unisex | English |
| Opal | Jewel, gem | Female | Sanskrit |
| Oreo | American cookie brand consisting of two chocolate wafers with white cream filling. | Unisex | English |
| Paisley | Church, cemetery | Unisex | English |
| Peaches | Red, yellow skinned fleshy fruit | Unisex | English |
| Peanut | Edible nuts eaten raw or roasted. | Unisex | English |
| Pearl | Pearl | Female | English |
| Pebbles | After the character in 'The Flintstones' cartoons | Female | English |
| Peewee | | Unisex | Hebrew |
| Pepper | Pepper | Female | English |
| Phoebe | Bright | Female | Greek |
| Pita | The fourth girl baby | Unisex | African |
| Poco | Little. | Unisex | English |
| Polly | Bitter | Female | Hebrew |
| Princess | Royal son | Female | English |
| Psycho | | Unisex | Hebrew |
| Punkin | | Unisex | Hebrew |
| Queen | Female ruler | Unisex | English |