| STS | Shuttle Transport System / Space Transportation System | - | Atmospheric Research Center |
| STS | Slater Transition State (for Calcg. Electronic Transitions Of Atoms And Molecules) | - | Computer Acronyms(common) |
| STS | Space Transportation System | - | Computer Acronyms(common) |
| STS | Scanning Tunnelling Spectroscopy | - | Computer Acronyms(common) |
| STS | Sequence-tagged Site | - | Computer Acronyms(common) |
| STS | Surface Tunnelling Spectroscopy | - | Computer Acronyms(common) |
| STS | Sequence-tagged Site | - | Medical |
| STS | Shuttle Test Station | - | Organizations |
| STS | Space Transportation System | - | Organizations |
| STS | Space Transportation System | - | Organizations |
| STS | Structural Transition Section | - | Organizations |
| STS | RSystem Test Summary Report | - | Organizations |
| STS | So To Speak | - | ISO Country Codes |
| STS | Seasonal Transition Simulation | - | Business and Finance |
| STS | Space Transportation System | - | Business and Finance |
| STS | synchronous transport signal
| - | Human Genome |
