| Name | Meaning | Gender | Origin |
|---|
| Ninja | | Male | |
| Oreo | American cookie brand consisting of two chocolate wafers with white cream filling. | Male | |
| Oreo | American cookie brand consisting of two chocolate wafers with white cream filling. | Male | |
| Persia | | Male | Hebrew |
| Pickles | Food flavored in a solution of vinegar | Unisex | |
| Pilar | pillar | Unisex | |
| Pitty Pat | | Unisex | |
| Pixel | | Male | |
| Pocahontas | Playful, Friendly | Unisex | Native American |
| Pogo | | Unisex | |
| Pounce | | Unisex | |
| Puck | | Male | |
| Radar | | Male | |
| Rambo | | Male | |
| Rascal | One that is playfully mischievous | Male | |
| Reebok | | Male | Hebrew |
| Remy | Brand of French cognac | Male | |
| Rio | River
| Male | Spanish |
| Robin | Famed: bright: shining Form of Robert popular since the medieval days of Robin Hood. Robinson: (English) Son of Robert Famed: bright: shining. Surname.
| Male | |
| Rocket | To move swiftly and powerfully | Male | Word |
| Rookie | | Unisex | Hebrew |
| Roxane | | Unisex | |
| Ruffian | | Unisex | Hebrew |
| Rufus | Red haired | Male | Latin |
| Rumble | | Unisex | |