| Abbreviation | Definition |
|---|---|
| SAMTO | Space and Missile Test Organization (VAFB) |
| SANC | Spacelab Ancillary Data Tape |
| SAND | Site Activation Need Date |
| SAND | South Accelerate, North Deccelerate |
| SAO | Smithsonian Astrophysical Observatory |
| SAP | Strain Arrestor Plate |
| SAR | Safety Analysis Report |
| SARP | Safety Analysis Report for Packaging |
| SARP | Shuttle Astronaut Recruitment Program |
| SARR | Small And Rapid Response |
| SART | Stimuli Analog Refresh Table |
| SAS | Small Astronomy Satellite |
| SAS | Solar Acquisition Sensor |
| SAS | Solar Array System |
| SAS | Space Adaptation Syndrome |
| SAS | Stability Augmentation Subsystem |
| SAS | Stability Augmented System |
| SASA | S-band Antenna Structural Assembly |
| SASE | Shuttle Atmospheric Science Experiment |
| SASP | Science and Applications Space Platform |