| Name | Meaning | Gender | Origin |
|---|
| Rosemary | the rosemary plant | Female | Latin |
| 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 | |
| Rydia | Rose pettles on still water.
| Female | |
| Sabria | | Unisex | Hebrew |
| Sabrina | Legendary princess
| Female | Celtic |
| Sanborn | Residence Name | Unisex | |
| Sandy | Abbreviation of Alexander defender of man.
| Male | Scottish |
| Scarlet | Scarlet coloured, deep red | Female | Color |
| Scylla | | Unisex | Hebrew |
| Sergeant | to serve | Male | Latin |
| Sesi | | Unisex | Hebrew |
| Seward | from the sea | Male | English |
| Shane | God is gracious | Male | Irish |
| Shani | scarlet | Female | Hebrew |
| Shannon | wise one, river name | Female | Irish |
| Shasta | | Female | |
| Shaun | Irish variation of John, God is gracious | Male | Spelling |
| Shawn | God is gracious | Male | Spelling |
| Shelly | From the ledge meadow
| Female | |
| Shimmer | | Unisex | |