| Name | Meaning | Gender | Origin |
|---|
| Rio | River
| Male | Spanish |
| Ripley | after the novel and the movie The Talented Mr. Ripley | Male | English |
| River | | Male | |
| Rockford | Rock. | Unisex | English |
| Rodney | after the character in the british sitcom Only Fools And Horses | Male | English |
| Roger | famous spearman, quiet | Male | |
| Ron | Ronald | Unisex | |
| Ronan | a pledge | Male | Irish |
| Ross | from the TV sitcom Friends | Male | Scottish |
| Rotsukhon | | Unisex | |
| Rua | | Unisex | |
| Ruford | From the Red Ford | Unisex | |
| Rush | red-haired | Male | English |
| Rusty | Covered in rust - a brownish red colour. | Unisex | |
| Sabria | | Unisex | Hebrew |
| Sanborn | Residence Name | Unisex | |
| Sandy | Abbreviation of Alexander defender of man.
| Male | Scottish |
| Scylla | | Unisex | Hebrew |
| Sergeant | to serve | Male | Latin |
| Sesi | | Unisex | Hebrew |
| Seward | from the sea | Male | English |
| Shane | God is gracious | Male | Irish |
| Shaun | Irish variation of John, God is gracious | Male | Spelling |
| Shawn | God is gracious | Male | Spelling |
| Shimmer | | Unisex | |