| Name | Meaning | Gender | Origin |
|---|
| Scout | One dispatched from main body to gather information | Male | Word |
| Sebastian | An august person | Male | Latin |
| Sergeant | to serve | Male | Latin |
| Sergei | Servant | Male | Russian |
| Seward | from the sea | Male | English |
| Shadrach | Aku's Command | Unisex | Arabic |
| Shooter | Waylon Jennings' Sons Name Is Shooter. | Male | User Contributed |
| Simon | he who hears | Male | Hebrew |
| Stetson | Cowboy Hat | Male | English |
| Striker | | Male | |
| Tank | A large metal container. A heavily armed combat vehicle | Unisex | |
| Templeton | temple settlement | Male | English |
| Tex | Of Texas | Male | English |
| Thompson | son of Tom | Male | English |
| Tosh | | Unisex | |
| Tristan | A knight
| Male | Celtic |
| Trooper | A state or mounted police officer. Also a member of a cavalry unit. | Unisex | |
| Troy | Descendant of the curly haired ones | Male | Irish |
| Tyrone | From Owen's territory. County Tyrone in Ireland. The late actor Tyrone Power.
| Male | Irish |
| Umberto | renowned warrior | Male | Italian |
| Uriah | God is my light
| Male | Hebrew |
| Victor | Victor
| Male | Latin |
| Walt | Army Ruler | Male | English |
| Walter | Powerful ruler
| Male | |
| Warren | watchman, game keeper, enclosure, from La Varenne | Male | |