| Name | Meaning | Gender | Origin |
|---|
| Rosebud | | Unisex | Hebrew |
| Rosey | | Female | |
| Rosie | From Rose - The most beautiful of flowers | Female | English |
| Roxy | From Roxanne - Brilliant dawn | Female | English |
| Ruby | Jewel
| Female | Latin |
| Ruffles | A strip of frilled fabric. Irregular | Unisex | |
| Rusty | Covered in rust - a brownish red colour. | Unisex | |
| Sabine | Of Sabine, Italy | Unisex | French |
| Sadie | Princess
| Female | English |
| Sallie | Princess | Unisex | English |
| Sally | saviour | Female | English |
| Sammy | Hebrew, told by God | Male | English |
| Samuel | his name is God | Male | Hebrew |
| Sandy | Abbreviation of Alexander defender of man.
| Male | Scottish |
| Sasha | defending men | Female | Russian |
| Sassy | Lively and spirited | Female | |
| Scooter | One who goes suddenly and speedily. | Male | |
| Scout | One dispatched from main body to gather information | Male | Word |
| Scully | Herald
| Male | Irish |
| Sebastian | An august person | Male | Latin |
| Selena | after the goddess Selene | Female | Latinized |
| Shadow | A rough, dark image cast by an object blocking the sun's rays | Female | English |
| Shasta | | Female | |
| Simba | lion | Male | Swahili |
| Simba | from The Lion King | Male | Swahili |