| Name | Meaning | Gender | Origin |
|---|
| Red | A primary colour resembling the colour of blood | Male | Color |
| Remus | | Male | |
| Rex | after the Rex Banner character in The Simpsons cartoons | Male | Latin |
| Rhonda | Good spear.
| Female | Welsh |
| Riddle | | Male | Hebrew |
| Rigel | Foot. Rigel is a blue star of the first magnitude that marks the hunter's left foot in the Orion constellation.
| Male | |
| Rinat | Happiness, melody.
| Female | |
| 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 | |
| Roch | Glory
| Female | |
| Rodolphus Lestrange | married Bellatrix Black.
| Male | |
| Ron Weasley | Harry's best friend.
| Male | |
| Roo | | Unisex | Hebrew |
| Rory | aka Rors | Male | Irish |
| Rowa | Lovely vision.
| Female | |
| Ruby | Jewel
| Female | Latin |
| Rudy | From Rudolph - Famous wolf | Male | |
| Rusty | Covered in rust - a brownish red colour. | Unisex | |
| Ruth | compassionate friend | Female | Hebrew |
| Sable | A carnivorous mammal of Northern Europe with soft, dark fur. | Female | Animal |
| Saffi | Wisdom | Unisex | Danish |
| Salazar Slytherin | | Unisex | |
| Salim | Peace
| Male | Arabic |
| Sally | saviour | Female | English |
| Samson | Bright sun
| Male | Hebrew |