| Name | Meaning | Gender | Origin |
|---|
| Pepper | Pepper | Female | English |
| Perry | Foreigner, stranger | Male | Latin |
| Pickles | Food flavored in a solution of vinegar | Unisex | English |
| Pico | | Unisex | Hebrew |
| Piper | A pipe player | Female | English |
| Pippin | Foreigner, stranger | Unisex | Latin |
| Plato | Liberal | Male | Greek |
| Pogo | | Unisex | Hebrew |
| Polo | Brave wanderer | Male | English |
| Pookie | | Unisex | Hebrew |
| Popcorn | Corn that when heated forms white edible puffs. | Unisex | English |
| Popeye | | Unisex | Hebrew |
| Porky | | Unisex | Hebrew |
| Prince | Royal son | Male | English |
| Puddles | | Unisex | Hebrew |
| Pumpkin | Large round fruit with orange skin | Unisex | English |
| Quick | Speedy and fast. | Unisex | English |
| Quincy | Fifth | Male | Latin |
| Radar | | Unisex | Hebrew |
| Rags | | Unisex | Hebrew |
| Rajah | Anticipation | Unisex | Arabic |
| Ralph | Wolf council | Male | Germanic |
| Ralphie | Wise Ruler, Wolf | Unisex | English |
| Rambo | | Unisex | Hebrew |
| Ranger | Gamekeeper | Male | English |
| Rascal | One that is playfully mischievous | Unisex | English |
| Ray | Advice | Male | Germanic |
| Rebel | One that resists of defies authority | Unisex | English |
| Red | Red | Unisex | English |
| Rex | King | Male | Latin |