| Name | Meaning | Gender | Origin |
|---|
| Rudolf | | Unisex | |
| Rusty | Covered in rust - a brownish red colour. | Unisex | |
| Saba | woman of Sheba Muslim name for Morning | Unisex | |
| Sabina | Sabine | Female | Latin |
| Sabra | thorny cactus; to rest | Female | Hebrew |
| Sabrina | Legendary princess
| Female | Celtic |
| Sachi | bliss-child; wife of Indra | Unisex | |
| Sadie | Princess
| Female | English |
| Saffron | A cooking spice | Female | Spice |
| Sage | Aromatic grayish-green herb. Wise or experienced person. | Female | |
| Sahara | the moon . The world's largest desert situated in northern Africa. | Female | Arabic |
| Salome | Asked of God | Female | Hebrew |
| Samantha | A listener | Female | Hebrew |
| Samara | after the character in The Ring movie | Female | Hebrew |
| Sandrine | helper and defender of mankind | Female | |
| Sapphire | Precious Gem | Female | Hebrew |
| Saskia | Saxon | Female | Dutch |
| Satin | smooth, shiny | Female | |
| Satin | smooth, shiny | Female | |
| Savanna | From The Open Plain | Unisex | Spanish |
| Savannah | From the open plain
| Female | Spanish |
| Saxton | Swordsman | Unisex | Celtic |
| Scarlet | Scarlet coloured, deep red | Female | Color |
| Scarlett | Red | Female | English |
| Seiko | Good name for a watchdog. | Unisex | |