| Name | Meaning | Gender | Origin |
|---|
| Reese | ardor | Female | Welsh |
| Riley | courageous | Female | Irish |
| Roger | famous spearman, quiet | Male | |
| Rosalie | rose | Female | |
| Sachin | Pure | Unisex | Hindu |
| Sammy | Hebrew, told by God | Male | English |
| Serena | Tranquil or serene. | Female | Latin |
| Shadow | A rough, dark image cast by an object blocking the sun's rays | Female | English |
| Shane | God is gracious | Male | Irish |
| Shannon | wise one, river name | Female | Irish |
| Sherbie | | Unisex | |
| Simon | he who hears | Male | Hebrew |
| Sonia | wisdom | Female | Russian |
| Sonny | A boy or young man. | Male | Nickname |
| Spitz | from the video game Wario Ware | Unisex | |
| Squash | | Unisex | |
| Striker | | Male | |
| Sumo | Form of wrestling. | Unisex | |
| Tara | A hill where the kings met
| Female | Irish |
| Tex | Of Texas | Male | English |
| Texas | | Male | |
| Thunder | Sound produced from lightning | Unisex | |
| Thunder | Sound produced from lightning | Unisex | |
| Thunder | Sound produced from lightning | Unisex | |
| Tina | River
| Female | English |