| Name | Meaning | Gender | Origin |
|---|
| Morgan | Uncertain, perhaps bright sea | Female | Welsh |
| Morgana | Uncertain, perhaps bright sea | Female | Welsh |
| Muffin | A small cup shaped cake | Unisex | English |
| Munchkin | A very small elflike person. | Unisex | English |
| Nadia | Hope | Female | Russian |
| Nakeisha | Her Life | Female | African |
| Nalani | The heavens | Female | Hawaiian |
| Nanette | Grace | Female | Hebrew |
| Naomi | Beautiful, pleasant, delightful | Female | Hebrew |
| Natalia | Christ's birthday | Female | Italian |
| Natalie | Christ's birthday | Female | Italian |
| Natasha | (Christ's) birthday | Female | Latin |
| Nibbles | | Unisex | Hebrew |
| Nicky | Victory of the people | Unisex | Greek |
| Nicole | Victory of the people | Female | Greek |
| Nipper | A small boy | Unisex | English |
| Nish | | Unisex | Hebrew |
| Noelle | Day of birth | Unisex | Latin |
| Nyx | Night | Female | Greek |
| Ocean | Ocean | Female | Greek |
| Oceana | Ocean | Female | Greek |
| October | Eighth | Unisex | English |
| Olive | Olive | Female | English |
| Olivia | Elf army | Female | English |
| Onyx | A gemstone with bands of different colours. | Unisex | English |
| Opal | Jewel, gem | Female | Sanskrit |
| Ophelia | Help | Female | Greek |
| Oreo | American cookie brand consisting of two chocolate wafers with white cream filling. | Unisex | English |
| Oriana | Dawn, gold | Female | Latin |
| Pacey | Paccius' place | Unisex | French |