| Name | Meaning | Gender | Origin |
|---|
| Regan | little king | Female | Irish |
| Regulus Black | Sirius' brother, Death Eater killed by Voldemort.
| Male | |
| Rey | King
| Male | Spanish |
| Rhapsody | | Female | Hebrew |
| Ribbon | | Unisex | Hebrew |
| Rigby | Lives in the ruler
| Male | English |
| Rima | White antelope
| Female | Arabic |
| Ringo | apple, peace be with you | Male | English |
| Ripper | | Unisex | |
| Ritz | | Male | |
| Robbie | Abbreviation of Robert Famed: bright: shining.
| Male | |
| Rodolphus Lestrange | married Bellatrix Black.
| Male | |
| Roquefort | Mouse from The AristoCats
| Male | |
| Rose | Flower
| Female | Latin |
| Rosemary | the rosemary plant | Female | Latin |
| Roxanne | Dawn
| Female | Persian |
| Rudi | Famous Wolf | Female | Hungarian |
| Rydia | Rose pettles on still water.
| Female | |
| Sabrina | Legendary princess
| Female | Celtic |
| Saina | Princess
| Female | |
| Salem | Peace
| Male | Hebrew |
| Samantha | A listener | Female | Hebrew |
| Samar | Conversations at night
| Male | Arabic |
| Samara | after the character in The Ring movie | Female | Hebrew |
| Sandi | Defender, helper of all men.
| Female | |