| Name | Meaning | Gender | Origin |
|---|
| Picabo | Silver creek, shining water | Female | Native American |
| Pine | Pine tree | Male | English |
| Pluto | Wealth, riches | Unisex | Greek |
| Polar | Region within the polar circles, referred to as the Arctic and Antarctic | Both | English |
| Polaris | The brightest star in the constellation Ursa Minor | Both | English |
| Poppy | Poppy flower | Female | English |
| Precious | Loved | Female | English |
| Prince | Royal son | Male | English |
| Prisa | Praise | Female | Swedish |
| Pronto | Without delay, quickly | Both | Spanish |
| Ptarmigan | Any of various grouses of northern regions with completely feathered feet | Both | English |
| Puck | Elf | Unisex | English |
| Quik | One who is fast; a witty man | Both | English |
| Rage | | Unisex | Hebrew |
| Raven | Raven | Male | English |
| Reba | To tie | Female | Hebrew |
| Rebel | One that resists of defies authority | Unisex | English |
| Ren | Water lily | Female | Japanese |
| Riley | Rye clearing | Male | English |
| Ringo | Apple, peace be with you | Male | English |
| River | River | Unisex | English |
| Rocky | Battle cry | Male | Germanic |
| Rogue | | Unisex | Hebrew |
| Rose | Rose | Female | Latin |
| Rosie | Rose | Female | Latin |
| Roxy | Star | Female | Persian |
| Ruby | Red | Female | Latin |
| Rudy | Famous wolf | Male | Germanic |
| Rufus | Red | Male | Latin |
| Rusty | Rusty, full of rust | Unisex | American English |