| Abbreviation | Definition |
|---|---|
| SASTP | Stand-Alone Self-Test Program |
| SAT | Saturate, Saturated |
| SATAF | Shuttle Activation Task Force |
| SATO | Shuttle Attached Teleoperator |
| SATO | Supply and Transportation Operations |
| SATS | Shuttle Avionics Test System |
| SATS | Small Aircraft Transportation System |
| SATS | Small Applications Technology Satellite |
| SAU | Signal Acquisition Unit |
| SAU | Strap Around Unit |
| SAVER | Shuttle Avionics Verification and Evaluation |
| SAVER | Shuttle Avionics Verification and Evaluation Requirements |
| SAWD | Solid Amine Water Desorbed |
| SB | Space Base |
| SB | Spectroscopic Binary |
| SB | Speed Brake |
| SB | Synchronization Base |
| SB | Synchronization Bit |
| SBA | Seat Back Assembly |
| SBA | Structure Borne Acoustic |