| Abbreviation | Definition |
|---|---|
| SSADM | Systems Structure And Development Methodology |
| SSAT | Shuttle Service and Access Tower |
| SSAT | Space Shuttle Access Tower |
| SSAT | Space Station Airlock Trainer |
| SSB | Space Studies Board |
| SSBC | Summary Sheet Bar Chart |
| SSBD | Shaped Sonic Boom Demonstrator |
| SSBUV | Shuttle Solar Backscatter Ultra-Violet |
| SSBUV | Shuttle Solar Backscatter Ultraviolet Instrument |
| SSC | Scanning Shadow Camera |
| SSC | Shuttle System Contractor |
| SSC | Single-Stage Command |
| SSC | Solid-Solution Cermet |
| SSC | Stennis Space Center |
| SSC | Sub-System Computer |
| SSC | Subsystem Sequence Controller |
| SSCA | Surface Sampler Control Assembly |
| SSCC | Space Station Control Center |
| SSCC | Support Services Control Center |
| SSCE | Solid Surface Combustion Experiment |