| Name | Meaning | Gender | Origin |
|---|
| Sage | Aromatic grayish-green herb. Wise or experienced person. | Female | |
| Sapphire | Precious Gem | Female | Hebrew |
| Sasha | defending men | Female | Russian |
| Sebastian | An august person | Male | Latin |
| Shamrock | | Unisex | |
| Sierra | Dark Feminine of Ciaran.
| Female | Spanish |
| Silver | White
| Male | English |
| Sky | The expanse of air over the Earth | Female | Nature |
| Smokey | A grayish blue colour. Slang for highway patrol officer | Male | |
| Smokey | A grayish blue colour. Slang for highway patrol officer | Male | |
| Smokey | A grayish blue colour. Slang for highway patrol officer | Male | |
| Snow | Frozen crystals that fall in soft, white flakes | Female | English |
| Solstice | Sun Exposure | Female | Greek |
| Sorrel | reddish brown | Male | Botanical |
| Spice | Plant used to flavour food or beverages. | Unisex | |
| Steel | Strong metal alloy made of iron and carbon. Hard unflinching character. | Male | Word |
| Storm | Storm
| Male | Word |
| Stormy | | Female | |
| Summer | summer season | Female | Word |
| Sunny | Abounding in sunshine, cheerful | Male | Nickname |
| Sunshine | Rays from the sun. Cheerfulness | Female | Word |
| Tawny | A light brown colour | Female | English |
| Tempest | storm | Female | Word |
| Terra | earth | Female | Latin |
| Thunder | Sound produced from lightning | Unisex | |