| Name | Meaning | Gender | Origin |
|---|
| Popper | | Unisex | Hebrew |
| Radar | | Unisex | Hebrew |
| Rambo | | Unisex | Hebrew |
| Remi | Abbreviation Of Remington. | Unisex | English |
| Remy | Abbreviation Of Remington. | Female | English |
| River | River | Unisex | English |
| Rocket | To move swiftly and powerfully | Unisex | English |
| Rosco | Roe deer wood | Unisex | Norse |
| Ruby | Red | Female | Latin |
| Rue | Fame | Female | German |
| Sarge | Noncommissioned Army or Air Force rank | Unisex | English |
| Scout | Observer | Unisex | American English |
| Shiloh | Gift for him | Unisex | Hebrew |
| Sky | Sky | Unisex | Norse |
| Sniff | A short inhale through the nose. To savour or investigate a smell. | Unisex | English |
| Sniper | A skilled shooter who spots targets from a concealed place. | Unisex | English |
| Spade | | Unisex | Hebrew |
| Sparkey | | Unisex | Hebrew |
| Speedy | Rapid motion, swift. | Unisex | English |
| Storm | Violent weather | Female | English |
| Suzy | Lily | Female | Hebrew |
| Taz | Wild Animal, Thrid Born | Unisex | American |
| Teal | The Bird Teal: Also The Blue-Green Color. | Unisex | English |
| Tess | Harvester | Female | Greek |
| Tex | Of Texas | Unisex | English |
| Timber | Wood used as a building material. Also timber-wolf. | Unisex | English |
| Tonto | | Unisex | Hebrew |
| Trigger | | Unisex | Hebrew |
| Trooper | A state or mounted police officer. Also a member of a cavalry unit. | Unisex | English |
| Tuff | Fun spelling of tough; strong and resilient. | Unisex | English |