| Name | Meaning | Gender | Origin |
|---|
| Nikita | Unconquered, unconquerable | Female | Greek |
| Nikki | Victory of the people | Female | Greek |
| Niko | Victory of the people | Male | Greek |
| Nina | Strong | Female | Latin |
| Noel | Christmas | Male | English |
| Nona | Ninth | Male | Latin |
| Norton | North settlement, north enclosure | Male | English |
| Nugget | As in Chicken | Unisex | English |
| Nutmeg | | Unisex | Hebrew |
| Oakley | From the oak meadow | Male | English |
| Obie | O.B. | Unisex | English |
| Odie | Woad hill | Unisex | English |
| Olive | Olive | Female | English |
| Oliver | Elf army | Male | French |
| Olivia | Elf army | Female | English |
| Ollie | Elf army | Male | French |
| Onyx | A gemstone with bands of different colours. | Unisex | English |
| Oreo | American cookie brand consisting of two chocolate wafers with white cream filling. | Unisex | English |
| Oscar | Divine spear | Male | English |
| Otis | One who hears well | Male | Greek |
| Otto | Wealth | Male | German |
| Oz | Divine | Male | English |
| Pablo | Small | Male | Latin |
| Paco | From France | Male | Latin |
| Paddy | Patrician | Male | Latin |
| Panda | A bear like Chinese mammal, with distinct black and white markings | Unisex | English |
| Pandora | All gift | Female | Greek |
| Panther | A black leopard | Unisex | English |
| Parker | Gamekeeper of a park | Male | English |
| Pasha | Passover | Unisex | Greek |