| Name | Meaning | Gender | Origin |
|---|
| Nacho | Small triangles of tortilla topped with cheese. | Male | Word |
| Nigel | Black haired one. | Male | Irish |
| Noir | | Unisex | |
| Nugget | as in Chicken | Unisex | |
| Nutmeg | | Male | |
| Oklahoma | | Male | Hebrew |
| Oleander | | Unisex | |
| Ollie | Latin, olive tree | Male | English |
| Onyx | A gemstone with bands of different colours. | Male | |
| Oreo | American cookie brand consisting of two chocolate wafers with white cream filling. | Male | |
| Oreo | American cookie brand consisting of two chocolate wafers with white cream filling. | Male | |
| Orville | Gold town.
| Male | |
| Osbert | inspired, divine | Male | English |
| Osceola | | Unisex | Hebrew |
| Pandu | | Unisex | |
| Patches | | Male | |
| Peach | | Unisex | |
| Pepper | A spice or condiment. | Male | Sanskrit |
| Periwinkle | | Male | |
| Phantom | Something elusive. A ghost | Unisex | |
| Phoenix | Mystical Bird, Purple
| Male | Greek |
| Phoenix | Mystical Bird, Purple
| Male | Greek |
| Pinky | For Pinky Lee, the painting, and the color of her nose | Unisex | |
| Popcorn | Corn that when heated forms white edible puffs. | Unisex | |
| Powder | Substance of fine particles. Light, dry snow. | Unisex | |