| Name | Meaning | Gender | Origin |
|---|
| Poison | A destructive or fatal substance. | Unisex | English |
| Porkchop | | Unisex | Hebrew |
| Psycho | | Unisex | Hebrew |
| Rage | | Unisex | Hebrew |
| Rambo | | Unisex | Hebrew |
| Reagan | Descendent of Riagán | Unisex | Gaelic |
| Rebel | One that resists of defies authority | Unisex | English |
| Reno | Ruler with counsel | Unisex | Germanic |
| Rogue | | Unisex | Hebrew |
| Ryder | One who rides | Unisex | English |
| Sable | Sable (black) | Unisex | English |
| Salem | Secure, peace | Unisex | Arabic |
| Sarge | Noncommissioned Army or Air Force rank | Unisex | English |
| Sasquatch | Has extra toes and hence is a bigfoot | Unisex | English |
| Scar | From The Lion King | Unisex | English |
| Scotch | Scotch whiskey. | Unisex | English |
| Shadow | Shadow | Unisex | English |
| Skinner | | Unisex | Hebrew |
| Smokey | A grayish blue colour. Slang for highway patrol officer | Unisex | English |
| Snake | | Unisex | Hebrew |
| Sniper | A skilled shooter who spots targets from a concealed place. | Unisex | English |
| Spider | An eight legged insect | Unisex | English |
| Spirit | Part of the human being associated with the mind. Vigorous or animated state - spirited. Also distilled alcohol. | Unisex | English |
| Tank | A large metal container. A heavily armed combat vehicle | Unisex | English |
| Taz | Wild Animal, Thrid Born | Unisex | American |
| T-bone | A thick steak containing a T shaped bone. | Unisex | English |
| Tequila | An alcoholic liquor distilled from mescal. | Unisex | English |
| Terminator | | Unisex | Hebrew |
| Tiger | Tiger | Unisex | English |
| Tito | Giant | Unisex | Latin |