| Name | Meaning | Gender | Origin |
|---|
| Moonlight | | Unisex | |
| Morgan | circle; sea | Female | Welsh |
| Moselle | taken from water | Female | Hebrew |
| Muriel | myrrh; sea-bright; angel of June | Female | Irish |
| Mushroom | A fleshy vegetable with an umbrella shaped cap atop a stalk. | Unisex | |
| Nevada | Snow-clad. A western USA state.
| Male | Spanish |
| Nimbus | | Unisex | |
| Nola | Noble or Famous | Female | Gaelic |
| Noodle | A narrow ribbon-like strip of dough | Unisex | |
| North | from the north | Male | Word |
| Nova | A star that suddenly becomes much brighter. | Female | Latin |
| Nun | | Unisex | |
| Nuray | Turkish for white moon | Unisex | |
| Nyx | Greek goddess of night | Female | Greek |
| Oatmeal | | Male | |
| Opal | Australian gemstone of remarkable colours, usually red, blue or green | Female | Sanskrit |
| Opal | Australian gemstone of remarkable colours, usually red, blue or green | Female | Sanskrit |
| Oreo | American cookie brand consisting of two chocolate wafers with white cream filling. | Male | |
| Oreo | American cookie brand consisting of two chocolate wafers with white cream filling. | Male | |
| Paloma | Dove
| Female | Spanish |
| Paper | | Unisex | |
| Paradise | | Unisex | |
| Pearl | Precious jewel. A hard, rounded gem, usually white in colour | Female | Latin |
| Pegasus | | Male | |
| Peppermint | | Male | Hebrew |