| Name | Meaning | Gender | Origin |
|---|
| Sarge | Noncommissioned Army or Air Force rank | Male | |
| Savannah | From the open plain
| Female | Spanish |
| Scout | One dispatched from main body to gather information | Male | Word |
| Sergeant | to serve | Male | Latin |
| Sheridan | The Wild Man | Male | Irish |
| Sherman | wool cutter | Male | English |
| Shooter | Waylon Jennings' Sons Name Is Shooter. | Male | User Contributed |
| Sierra | Dark Feminine of Ciaran.
| Female | Spanish |
| Sinbad | | Male | |
| Skipper | Master of a ship. | Male | English |
| Smoky | | Unisex | |
| Sniper | A skilled shooter who spots targets from a concealed place. | Unisex | |
| Squid | | Unisex | |
| Stephen | crown | Male | Greek |
| Striker | | Male | |
| Tango | | Male | |
| Tank | A large metal container. A heavily armed combat vehicle | Unisex | |
| Tariq | Morning star. An 8th century Islamic military leader who conquered Spain for the Moors.
| Male | Arabic |
| Templeton | temple settlement | Male | English |
| Theodore | gift of God | Male | Greek |
| Tracker | One who follows the tracks or marks of another. | Unisex | |
| Tracy | path, road | Male | |
| Trooper | A state or mounted police officer. Also a member of a cavalry unit. | Unisex | |
| Troy | Descendant of the curly haired ones | Male | Irish |
| Tyr | Viking mythology: the god of war | Unisex | |