| Name | Meaning | Gender | Origin |
|---|
| Pepper | A spice or condiment. | Male | Sanskrit |
| Phoebe | bright one | Female | Greek |
| Phoebe | bright one | Female | Greek |
| Poppy | Flower with four crumpled petals in red, orange or white colours | Female | Latin |
| Poppy | Flower with four crumpled petals in red, orange or white colours | Female | Latin |
| Precious | One who is beloved, a darling. | Female | Latin |
| Prince | Principal one: first. The rock musician Prince.
| Male | Latin |
| Prince James | | Unisex | |
| Princess | Female member of a royal family | Female | Word |
| Puffy | | Unisex | |
| Pumpkin | Large round fruit with orange skin | Male | |
| Puss | | Male | |
| Pussy | | Unisex | |
| Rascal | One that is playfully mischievous | Male | |
| Rebel | One that resists of defies authority | Male | Word |
| Rex | after the Rex Banner character in The Simpsons cartoons | Male | Latin |
| Riley | courageous | Female | Irish |
| Rocky | rest | Male | English |
| Romeo | pilgrim to Rome | Male | Italian |
| Rosie | From Rose - The most beautiful of flowers | Female | English |
| Roxy | From Roxanne - Brilliant dawn | Female | English |
| Ruby | Jewel
| Female | Latin |
| Rudy | From Rudolph - Famous wolf | Male | |
| Rusty | Covered in rust - a brownish red colour. | Unisex | |
| Sabrina | Legendary princess
| Female | Celtic |