| Name | Meaning | Gender | Origin |
|---|
| Rosie | From Rose - The most beautiful of flowers | Female | English |
| Roxy | From Roxanne - Brilliant dawn | Female | English |
| Ruby | Jewel
| Female | Latin |
| Rusty | Covered in rust - a brownish red colour. | Unisex | |
| Sabrina | Legendary princess
| Female | Celtic |
| Sadie | Princess
| Female | English |
| Samantha | A listener | Female | Hebrew |
| Samatha | God Has Heard | Unisex | English |
| Sandstorm | | Unisex | |
| Sarah | Princess
| Female | Hebrew |
| Sasha | defending men | Female | Russian |
| Sassy | Lively and spirited | Female | |
| Scaredy | | Unisex | Hebrew |
| Shadow | A rough, dark image cast by an object blocking the sun's rays | Female | English |
| Sheba | from Sheba | Female | Hebrew |
| Sir Lionel | | Unisex | |
| Snickers | A brand of candy bar. | Unisex | |
| Snickers | A brand of candy bar. | Unisex | |
| Snowball | | Unisex | |
| Socks | Short stockings finishing above the ankle | Unisex | |
| Sooty | Covered with soot | Unisex | |
| Sophia | Wisdom.
| Female | Greek |
| Sophie | Wisdom. Variant of Sophia
| Female | |
| Sox | Short stockings finishing above the ankle | Unisex | |
| Sox | Short stockings finishing above the ankle | Unisex | |