| Name | Meaning | Gender | Origin |
|---|
| Spock | | Unisex | |
| Sprite | Lemonade flavored soft drink. | Male | |
| Sputnik | | Unisex | Hebrew |
| Steve | garland, crown | Male | English |
| Steven | garland, crown | Male | English |
| Stewie | | Unisex | |
| Storm | Storm
| Male | Word |
| Stuart | Bailiff
| Male | Scottish |
| Tabitha | gazelle, roe-buck | Female | Aramaic |
| Taylor | A tailor
| Female | English |
| Techno | | Unisex | |
| Teddy | From Edward - Prosperous guardian | Unisex | |
| Temperance | | Female | |
| Tessa | Abbreviation of Teresa which is a popular saint's name of uncertain meaning.
| Female | English |
| Thaddeus | Praise be to God | Male | Aramaic |
| Thalia | blooming, plentiful | Female | Greek |
| Thelma | nursing | Female | Literary |
| Theo | divine gift | Male | English |
| Theodore | gift of God | Male | Greek |
| Thing | An entity or idea having it's own existence. | Unisex | |
| Thomas | Twin
| Male | Aramaic |
| Thomas | Twin
| Male | Aramaic |
| Thor | Viking mythology: the ruler of the weather | Male | Norse |
| Tiberius | of the Tiber | Male | Latin |
| Timmy | From Timothy - Honoring God | Unisex | |