| Abbreviation | Definition |
|---|---|
| SSZ | SpaceShip Zero |
| ST | Star Trek |
| STAC | Star Trek Alpha Command |
| STC | Space-Temporal Continuum |
| STL | Slower Than Light |
| STLP | Salt The Land Policy |
| STP | Stone Temple Pilots |
| STRIKE | Special Tactical Reserve for International Key Emergencies |
| STRIPE | Special Tactics Robotic Integrated Power Enhance |
| STS | Star Trek Soldiers |
| STS | Super Top Secret |
| STTNG | Star Trek The Next Generation |
| STUN | Screaming Toward the Uprising of Non-conformity |
| STV | Submarine Telepresence Vehicle |
| STW | Silent Titanium Warriors |
| STW | Star Trek Wannabees |
| SU | Shield Upgrade |
| SU | Superultramodern Unification |
| SV | Solus Veritas |
| SV | Space Vehicle |