| Name | Meaning | Gender | Origin |
|---|
| Sunny | Abounding in sunshine, cheerful | Male | Nickname |
| Sunrise | | Unisex | |
| Sunset | Daily disappearance of the sun below the horizon. Usually red, yellow or orange in colour. | Unisex | |
| Tabitha | gazelle, roe-buck | Female | Aramaic |
| Tammy | Abbreviation of Thomasina and Tamara.
| Female | English |
| Tanner | leather worker | Male | English |
| Tasha | Russian diminutive of Natalya, birthday of the Lord | Female | English |
| Tater | | Male | |
| Tattoo | | Unisex | |
| Tennessee | | Male | Hebrew |
| Tex | Of Texas | Male | English |
| Thief | | Unisex | |
| Tiberius | of the Tiber | Male | Latin |
| Tiffany | Manifestation of God | Female | Greek |
| Toad | Amphibian related to frogs, with a broader body and rougher skin. | Unisex | |
| Toby | God is Good | Male | English |
| Tommy | From Thomas - The twin. | Male | English |
| Tooter | | Unisex | Hebrew |
| Trapper | One who traps animals for their fur. | Unisex | |
| Travis | crossing | Male | |
| Trigger | | Unisex | |
| Trixie | she who brings happiness | Female | Latin |
| Trixie | she who brings happiness | Female | Latin |
| Trixiebelle | | Unisex | |
| Tucker | Tucker of doth
| Male | English |