| Name | Meaning | Gender | Origin |
|---|
| Spartacus | From the city of Sparta | Unisex | English |
| Spider | An eight legged insect | Unisex | English |
| Spike | A long, thick sharp-pointed piece of wood or metal | Male | English |
| Spunky | Spirited, plucky. | Unisex | English |
| Stetson | Son of Stephen | Male | English |
| Sticky | | Unisex | Hebrew |
| Stone | Stone | Male | English |
| Stormy | Violent weather | Unisex | English |
| Sylvester | A forest | Male | Latin |
| Talli | Dew of God | Unisex | Hebrew |
| Tank | A large metal container. A heavily armed combat vehicle | Unisex | English |
| Tanner | Tanner | Male | English |
| Tarzan | White skin | Unisex | Literary |
| T-bone | A thick steak containing a T shaped bone. | Unisex | English |
| Tequila | An alcoholic liquor distilled from mescal. | Unisex | English |
| Terence | Uncertain | Male | Latin |
| Terminator | | Unisex | Hebrew |
| Teva | Nature | Unisex | Hebrew |
| Tex | Of Texas | Unisex | English |
| Thaddeus | Uncertain, perhaps praised or heart | Male | Aramaic |
| Thor | Thunder | Male | Norse |
| Thunder | Stormy Tempered | Unisex | English |
| Tiger | Tiger | Unisex | English |
| Titan | Powerful big man | Unisex | Greek |
| Tito | Giant | Unisex | Latin |
| Titus | Of The Giants | Male | Latin |
| Todd | Fox | Male | English |
| Trooper | A state or mounted police officer. Also a member of a cavalry unit. | Unisex | English |
| Truman | Faithful man | Male | English |
| Turbo | Driven by a turbine - turbocharged | Unisex | English |