| Name | Meaning | Gender | Origin |
|---|
| Rafiki | | Unisex | |
| Rainbow | | Female | |
| Rajah | A prince, king or ruler in India | Male | Hindi |
| Ralph | Red wolf
| Male | English |
| Ralph | Red wolf
| Male | English |
| Randy | Diminutive of Randolph. House wolf: protector. Mythological wolf was esteemed for courage.
| Male | English |
| Ranger | dweller in the field A warden employed to protect a forest area. | Male | |
| Raspberry | | Unisex | |
| Ratty | | Unisex | Hebrew |
| Ray | kingly | Male | English |
| Razz | | Unisex | Hebrew |
| Reginald | powerful one | Male | English |
| Rem | | Male | Hebrew |
| Remus | | Male | |
| Rhea | stream, mother; poppy | Female | Greek |
| Rhino | | Unisex | |
| Rhoda | rose | Female | Greek |
| Richard | powerful ruler; brave one | Male | |
| Rico | aka Jerico | Male | Spanish |
| Ricochet | | Unisex | |
| Riley | courageous | Female | Irish |
| Rita | pearl, precious | Female | English |
| Robert | Famed: bright: shining. 14th-century King Robert the Bruce. Robert Burns the poet.
| Male | English |
| 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 | |
| Roger | famous spearman, quiet | Male | |