| Name | Meaning | Gender | Origin |
|---|
| Polaris | | Unisex | Hebrew |
| Pollux | crown | Male | Greek |
| Pookie | | Unisex | |
| Precious | One who is beloved, a darling. | Female | Latin |
| Pretzel | Glazed, salted and brittle biscuit in the form of a knot or stick. | Male | |
| Prince | Principal one: first. The rock musician Prince.
| Male | Latin |
| Princess | Female member of a royal family | Female | Word |
| Princeton | Principal one: first. The rock musician Prince.
| Male | English |
| Prudence | caution | Female | |
| Puma | | Female | |
| Pumpernickle | | Unisex | |
| Pumpkin | Large round fruit with orange skin | Male | |
| Punky | | Unisex | |
| Radar | | Male | |
| Rajah | A prince, king or ruler in India | Male | Hindi |
| Rambo | | Male | |
| Ramona | Wise defender
| Female | Spanish |
| Rani | The wife of a Rajah, a queen | Male | Hebrew |
| Raven | Dark haired or wise
| Female | Word |
| Ray | kingly | Male | English |
| Reeses | | Unisex | |
| Reggie | counsel power | Male | English |
| Remy | Brand of French cognac | Male | |
| Rianne | From John | Unisex | Celtic |
| Riley | courageous | Female | Irish |