| Name | Meaning | Gender | Origin |
|---|
| Rowan | red-haired; rugged | Male | Scottish |
| Roza | Latinate variation of Rose, rose, a flower | Female | Russian |
| Ruby | Jewel
| Female | Latin |
| Rue | Bitter, Medicinal Plant | Male | English |
| Sable | A carnivorous mammal of Northern Europe with soft, dark fur. | Female | Animal |
| 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 |
| Salmon | salmon, a fish | Male | Animal |
| Sapphire | Precious Gem | Female | Hebrew |
| Savanna | From The Open Plain | Unisex | Spanish |
| Savannah | From the open plain
| Female | Spanish |
| Seal | | Male | |
| Senna | brightness | Female | Botanical |
| Sequoia | sparrow | Female | Native |
| Shadow | A rough, dark image cast by an object blocking the sun's rays | Female | English |
| Shale | | Male | |
| Shalimar | | Female | |
| Shamrock | | Unisex | |
| Silver | White
| Male | English |
| Sky | The expanse of air over the Earth | Female | Nature |
| Skye | sky, sheltering | Female | Scottish |
| Slate | | Male | |
| Snow | Frozen crystals that fall in soft, white flakes | Female | English |
| Sorrel | reddish brown | Male | Botanical |