| Acronym | Definition |
|---|
| SSTS | Subsurface Sewage Treatment System |
| SSTS | Statements on Standards for Tax Services (AICPA) |
| SSTS | SVM (Service Module) Structure Subsystem |
| SSTS | System Sustainment Technical Support |
| SSTS | Section Seven Tracking System (US EPA) |
| SSTS | Solid-State Transfer Switch |
| SSTS | Subsidiary Shock Test System (hydraulic actuator) |
| SSTS | Student Shoulder-to-Shoulder |
| SSTS | Space Surveillance & Tracking System |
| SSTS | Sustainment Systems Technical Support |
| SSTS | Scottish Standard Time System (UK) |
| SSTS | Scandinavian Student Travel Service (travel agency holding company based in Copenhagen, Denmark) |
| SSTS | Star Simulator Test Stand |
| SSTS | Ship Service Telephone System |
| SSTS | Snickers Softly To Self |
| SSTS | Standard Systems Technical Support |
| SSTS | Sub-System Technical Specifications |