| SST | Spectroscopic Survey Telescope / SuperSonic Transport | - | Atmospheric Research Center |
| SST | Sea Surface Temperature | - | Computer Acronyms(common) |
| SST | Single System Trainer | - | Organizations |
| SST | SPacecraft Systems Test | - | Organizations |
| SST | Structural Static Test | - | Organizations |
| SST | Subsystem Terminal On Spacelab | - | Organizations |
| SST | SuperSonic Transport -Training Submarine (US Navy Hull Classification) - Saturated Suction Temperature (refrigeration Cycles) | - | Astronomy |
| SST | Sea Surface Temperature | - | Business and Finance |
| SST | Scalable Spectral Tool | - | Business and Finance |
| SST | Supersonic Transport | - | Business and Finance |
