| Name | Meaning | Gender | Origin |
|---|
| Money | | Unisex | |
| Monroe | mouth of the Roe River; wheelwright | Female | Scottish |
| Monroe | mouth of the Roe River; wheelwright | Female | Scottish |
| Montgomery | mountain hunter | Male | |
| Monty | From Montgomer - The mountain hunter. | Male | English |
| Moody | | Unisex | Hebrew |
| Murphy | Sea warrior | Male | Irish |
| Myrtle | a flower, symbol of victory | Female | Greek |
| Narcissa | self-love | Female | Greek |
| Nash | cliff | Male | English |
| Nessie | From Agnes - Pure and chaste. | Female | |
| Newton | new town | Male | English |
| Noah | Comfort
| Male | Hebrew |
| Noble | aristocratic | Male | Latin |
| Nolan | Noble
| Male | Irish |
| Nonnie | Ninth | Unisex | Latin |
| Norbert | blond hero | Male | |
| Nott | Hogwarts student.
| Male | |
| Odessa | odyssey, journey, voyage | Female | Russian |
| Olivia | Olive
| Female | Latin |
| Ollie | Latin, olive tree | Male | English |
| 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 |
| Opie | | Unisex | |
| Oprah | Fawn | Female | Hebrew |