| Abbreviation | Definition |
|---|---|
| STC | Silicon Trigger Card |
| STC | System Time Clock |
| STDR | suspend-to-disk-and-RAM |
| STGC | Single Track Gray Code |
| STIM | Smart Transducer Interface Module |
| STK | Situation Track display |
| STP | Secret Tweaker Pad |
| STS | Scent Technology System |
| STS | Squatters Tekno Soundsystem |
| STV | STereo Video cable |
| ST-V | Sega Titan Video |
| SU | Sub-Unit |
| SU | SUppressor |
| SUDS | Sudden USB (Universal Serial Bus) Death Syndrome |
| SUL | Soft UnderLayer |
| SVA | Stereo Variable Area |
| SVCD | Super Video Compact Disc |
| SVGA | Super Video Graphics Adapter |
| SVJ | Super Video Jack |
| SWAD | Specialized Weighing and Dimension |