| Name | Meaning | Gender | Origin |
|---|
| Steven | garland, crown | Male | English |
| Sullivan | black-eyed one | Male | Irish |
| Summer | summer season | Female | Word |
| Susan | Lily Diminutive of Susannah also used as an independent name. In the apocryphal Book of Tobit Susannah courageously defended herself against wrongful accusation. White lilies grew in the Biblical city of Susa in Persia.
| Female | Hebrew |
| Sydney | from city of St. Denis | Female | |
| Sylvia | from the forest | Female | Latin |
| Tabitha | gazelle, roe-buck | Female | Aramaic |
| Talia | Dew of heaven
| Female | Hebrew |
| Talia | Dew of heaven
| Female | Hebrew |
| Talon | large claw of a bird of prey | Male | |
| Tanner | leather worker | Male | English |
| Tara | A hill where the kings met
| Female | Irish |
| Tate | to be cheerful; windy, a great talker | Male | English |
| Tatiana | | Female | |
| Taylor | A tailor
| Female | English |
| Teagan | beautiful | Female | Irish |
| Temperance | | Female | |
| Terrance | Roman Clan Name. | Unisex | English |
| Terry | Latin clan name of uncertain meaning | Male | English |
| Tess | fourth born | Female | English |
| 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 |
| Theo | divine gift | Male | English |
| Theodore | gift of God | Male | Greek |