| Name | Meaning | Gender | Origin |
|---|
| Phineas | oracle; dark-skinned | Male | Hebrew |
| Phoenix | Mystical Bird, Purple
| Male | Greek |
| Phoenix | Mystical Bird, Purple
| Male | Greek |
| Pooh | | Unisex | |
| Prince Harry | | Unisex | |
| Puff | Expelling breath, a gust of wind or a small amount of smoke. | Male | |
| Puff | Expelling breath, a gust of wind or a small amount of smoke. | Male | |
| Pumpkin | Large round fruit with orange skin | Male | |
| Punkin | | Unisex | |
| Radcliffe | Residence Name | Unisex | |
| Raspberry | | Unisex | |
| Red | A primary colour resembling the colour of blood | Male | Color |
| Rhubarb | | Male | |
| Rogan | redhead | Male | Irish |
| Rojo | Red. Rojo for males and Raja for females. | Male | Spanish |
| Rory | aka Rors | Male | Irish |
| Rosso | | Unisex | |
| Rouge | | Unisex | |
| Roux | Red | Male | French |
| Rowan | red-haired; rugged | Male | Scottish |
| Rudy | From Rudolph - Famous wolf | Male | |
| Rufus | Red haired | Male | Latin |
| Ruskin | from a family of tanners | Male | Scottish |
| Russell | Red as a fox. | Male | |
| Rusty | Covered in rust - a brownish red colour. | Unisex | |