| Abbreviation | Definition |
|---|---|
| STIR | Strategy, Tactics, Implementation, and Review |
| STK | Sent To Kill |
| STK | Situation Track display |
| STK | StichbanKeramik |
| STK | STurmKanone |
| STKD | Stockade |
| STKG | SturzKampfGeschwader (German dive bomber wing) |
| STLW | Soviet Tesla Lightning Weapon |
| STM | Small Town Machine |
| STMP | Science and Technology Master Plan |
| STN | Sternberg Memory Search |
| STNNM | Station Name |
| STO | Science and Technology Objective |
| STO | Special Team Operations |
| STO | Special Technical Operations |
| STO | Storage |
| STO | Survive To Operate |
| STOATD | Science and Technology Objectives Advanced Technology Demonstration |
| STOC | Special Technical Operations Coordinator |
| STOD | Special Technical Operations Division |