| Name | Meaning | Gender | Origin |
|---|
| Nibbles | | Unisex | Hebrew |
| Nikki | Victory of the people | Female | Greek |
| Nina | Strong | Female | Latin |
| Nipper | A small boy | Unisex | English |
| Nova | New | Female | Latin |
| Nugget | As in Chicken | Unisex | English |
| Oda | Wealth | Female | Germanic |
| Opal | Jewel, gem | Female | Sanskrit |
| Oreo | American cookie brand consisting of two chocolate wafers with white cream filling. | Unisex | English |
| Paola | Small | Female | Latin |
| Paula | Small | Female | Latin |
| Paulette | Small | Female | Latin |
| Paulina | Small | Female | Latin |
| Pea | | Unisex | Hebrew |
| Peaches | Red, yellow skinned fleshy fruit | Unisex | English |
| Peanut | Edible nuts eaten raw or roasted. | Unisex | English |
| Pearl | Pearl | Female | English |
| Pebbles | After the character in 'The Flintstones' cartoons | Female | English |
| Peewee | | Unisex | Hebrew |
| Penny | Weaver | Female | Greek |
| Peppy | | Unisex | Hebrew |
| Perla | Pearl | Female | Italian |
| Picasso | | Unisex | Hebrew |
| Pickles | Food flavored in a solution of vinegar | Unisex | English |
| Pico | | Unisex | Hebrew |
| Piglet | | Unisex | Hebrew |
| Pink | Pink | Female | English |
| Pinky | For Pinky Lee, the painting, and the color of her nose | Unisex | English |
| Pip | Lover of horses | Unisex | Greek |
| Pippa | Lover of horses | Female | Greek |