| Acronym | Definition |
|---|
| OSTS➣Oil Shale and Tar Sands |
| OSTS➣Official Seed Testing Station (Scottish Agricultural Science Agency; Scotland, UK) |
| OSTS➣On-Site Sewage Treatment Systems |
| OSTS➣Old School Texas Surfing (Counter-Strike clan) |
| OSTS➣Office of Storage and Transporation Systems |
| OSTS➣Oscillation Stabilization Time Selection |