| Name | Meaning | Gender | Origin |
|---|
| Smokey | A grayish blue colour. Slang for highway patrol officer | Male | |
| Smokey | A grayish blue colour. Slang for highway patrol officer | Male | |
| Smokey | A grayish blue colour. Slang for highway patrol officer | Male | |
| Snickers | A brand of candy bar. | Unisex | |
| Snickers | A brand of candy bar. | Unisex | |
| Solar | | Unisex | Hebrew |
| Spike | A long, thick sharp-pointed piece of wood or metal | Male | American |
| Stallone | | Unisex | Hebrew |
| Storm | Storm
| Male | Word |
| Styx | from Greek mythology, the river that formed the boundary between earth and the underworld | Unisex | |
| Sugar | A sweet powder from sugar cane. Slang for sweetheart. | Female | Literary |
| Sugar | A sweet powder from sugar cane. Slang for sweetheart. | Female | Literary |
| Sunrise | | Unisex | |
| Tabasco | American spicy sauce made from red peppers. | Male | |
| Tallulah | leaping water | Female | Irish |
| Tarzan | | Male | |
| Tattoo | | Unisex | |
| Taz | | Male | |
| Thunder | Sound produced from lightning | Unisex | |
| Thunder | Sound produced from lightning | Unisex | |
| Thunder | Sound produced from lightning | Unisex | |
| Titan | | Male | |
| Titanic | | Unisex | Hebrew |
| Titus | of the giants | Male | Latin |
| Tracker | One who follows the tracks or marks of another. | Unisex | |