| Name | Meaning | Gender | Origin |
|---|
| Ruby | Jewel
| Female | Latin |
| Rudy | From Rudolph - Famous wolf | Male | |
| Rufus | Red haired | Male | Latin |
| Ruskin | from a family of tanners | Male | Scottish |
| Russell | Red as a fox. | Male | |
| Rusty | Covered in rust - a brownish red colour. | Unisex | |
| Saffron | A cooking spice | Female | Spice |
| Sahara | the moon . The world's largest desert situated in northern Africa. | Female | Arabic |
| Salmon | salmon, a fish | Male | Animal |
| Sandy | Abbreviation of Alexander defender of man.
| Male | Scottish |
| Scarlet | Scarlet coloured, deep red | Female | Color |
| Scarlett | Red | Female | English |
| Sedona | | Female | |
| Sesame | Small flat seeds used as food or source of cooking oil. | Female | Word |
| Sham | | Unisex | Hebrew |
| Shandy | Boisterous
| Male | English |
| Sherbert | Frozen dessert made from fruit, sugar and water. Australian slang for beer. | Unisex | |
| Sherbet | | Unisex | Hebrew |
| Sherry | A dry fortified wine. | Female | Phonetic |
| Shiraz | | Unisex | |
| Sienna | A clay like earthy reddish brown | Female | Italian |
| Sinbad | | Male | |
| Snowy | Covered with snow | Unisex | |
| Solo | | Unisex | |
| Sooner | | Unisex | Hebrew |