USSS
| Acronym | Definition |
|---|---|
| USSS | United States Secret Service (US Treasury Departement) |
| USSS | United States SIGINT System |
| USSS | United States Sharpshooters (United States Civil War) |
| USSS | United States Stamp Society |
| USSS | User Services & Systems Support (US DoD/Defense Threat Reduction Agency ) |
| USSS | Unitarian Sunday School Society Sermon |