| Name | Meaning | Gender | Origin |
|---|
| Pax | Peace | Unisex | Latin |
| Peanut | Edible nuts eaten raw or roasted. | Unisex | English |
| Pluto | Wealth, riches | Unisex | Greek |
| Porsche | Pig | Unisex | Latin |
| Pretzel | Glazed, salted and brittle biscuit in the form of a knot or stick. | Unisex | English |
| Prince | Royal son | Male | English |
| Riley | Rye clearing | Male | English |
| Ripley | Separate | Male | English |
| Rocky | Battle cry | Male | Germanic |
| Roddy | Renown island | Male | English |
| Rogue | | Unisex | Hebrew |
| Roth | Famous | Male | Germanic |
| Rudy | Famous wolf | Male | Germanic |
| Rufus | Red | Male | Latin |
| Rusty | Rusty, full of rust | Unisex | American English |
| Sabre | | Unisex | Hebrew |
| Sam | He is called god | Male | Hebrew |
| Sammy | His name is God | Unisex | Hebrew |
| Samson | Sun | Male | Hebrew |
| Sandy | Defending men | Male | Greek |
| Sasha | Defending men | Unisex | Greek |
| Sassy | Lively and spirited | Unisex | English |
| Schnapps | Variety of strong liquor usually associated with Holland | Unisex | English |
| Scout | Observer | Unisex | American English |
| Shadow | Shadow | Unisex | English |
| Smoky | | Unisex | Hebrew |
| Sparky | Animated, lively. | Unisex | English |
| Spike | A long, thick sharp-pointed piece of wood or metal | Male | English |
| Strom | Tree, Stream | Male | German |
| Teddy | Gift of God | Male | Greek |