| Name | Meaning | Gender | Origin |
|---|
| Rapunzel | | Unisex | |
| Ray | kingly | Male | English |
| Red | A primary colour resembling the colour of blood | Male | Color |
| Remy | Brand of French cognac | Male | |
| Rex | after the Rex Banner character in The Simpsons cartoons | Male | Latin |
| Richard | powerful ruler; brave one | Male | |
| 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 | |
| Roo | | Unisex | Hebrew |
| Roquefort | Mouse from The AristoCats
| Male | |
| Roscoe | From the deer forest. | Male | Norse |
| Rufus | Red haired | Male | Latin |
| Runt | | Unisex | Hebrew |
| Samson | Bright sun
| Male | Hebrew |
| Sarabi | from The Lion King | Unisex | |
| Sarafina | | Unisex | Hebrew |
| Sarge | Noncommissioned Army or Air Force rank | Male | |
| Scar | from The Lion King | Unisex | |
| Scat Cat | | Unisex | |
| Sebastian | An august person | Male | Latin |
| Sheldon | protected hill | Male | English |
| Shere Khan | | Unisex | Hebrew |
| Sheriff | | Unisex | Hebrew |
| Sid | | Unisex | |
| Simba | from The Lion King | Male | Swahili |