| Name | Meaning | Gender | Origin |
|---|
| Nellie | the bright one | Female | English |
| Nessa | headlands, promontory | Female | Scandinavian |
| Nibbles | | Unisex | |
| Nickle | | Unisex | |
| Nina | Girl
| Female | Russian |
| Nini | | Unisex | |
| Nirvana | deep silence, ultimate bliss | Female | Sanskrit |
| Nola | Noble or Famous | Female | Gaelic |
| Noodle | A narrow ribbon-like strip of dough | Unisex | |
| Nook | | Unisex | Hebrew |
| Nora | Abbreviation of Eleanora light and Honora honor.
| Female | Irish |
| Nova | A star that suddenly becomes much brighter. | Female | Latin |
| Nugget | as in Chicken | Unisex | |
| Obie | O.B. | Unisex | |
| Obsidian | | Unisex | |
| Olive | kind one; olive tree, peace. Symbol of peace. A small oval fruit. | Female | English |
| Orca | | Unisex | |
| Oso | Bear. Oso for males and Osa for females. | Unisex | |
| Paisley | church, cemetery | Female | Scottish |
| Panama | | Female | Hebrew |
| Pandora | talented one | Female | Greek |
| Paris | Brand of perfume. | Female | |
| Peaches | Red, yellow skinned fleshy fruit | Female | English |
| Peaches | Red, yellow skinned fleshy fruit | Female | English |
| Peanut | Edible nuts eaten raw or roasted. | Unisex | |