| Name | Meaning | Gender | Origin |
|---|
| Nessa | From The Headland | Female | English |
| Netta | Gracious | Female | English |
| Newman | New man | Male | English |
| Newt | New settlement, new enclosure | Unisex | English |
| Newton | New settlement, new enclosure | Male | English |
| Nita | Grace | Female | English |
| Noble | High-born, distinguished | Male | English |
| Nora | Light | Female | English |
| Norah | Light | Female | English |
| North | North | Male | English |
| Norton | North settlement, north enclosure | Male | English |
| Norwood | Norther woods | Male | English |
| Oakley | From the oak meadow | Male | English |
| Obedience | The quality of being obedient | Unisex | English |
| Odell | Woad hill | Male | English |
| Odie | Woad hill | Unisex | English |
| Odon | Prosperous protection | Male | English |
| Ogden | Oak valley | Male | English |
| Olin | Holy | Male | English |
| Olive | Olive | Female | English |
| Olivia | Elf army | Female | English |
| Olly | Elf army | Unisex | English |
| Orange | Orange | Unisex | English |
| Orde | Start | Unisex | English |
| Ormand | Serpent | Male | German |
| Ormond | Bears mountain | Unisex | English |
| Orrick | Old oak tree | Male | English |
| Osbert | Bright god | Male | English |
| Osbourne | Divine bear | Male | English |
| Oscar | Divine spear | Male | English |