| Abbreviation | Definition |
|---|---|
| SP | Spin |
| SP | Standard or Peculiar |
| SP | Static Pressure |
| SP | Sub Project |
| SP&S | Special Processes and Sequencing |
| SPA | S-Band Power Amplifier |
| SPA | Servo Power Amplifier |
| SPA | Shared Peripheral Area |
| SPA | Signal Processor Assembly |
| SPA | Small Payload Accommodations |
| SPA | Solar Panel Assembly |
| SPA | Space Processing Application |
| SPA | Spare Parts Analysis |
| SPA | Steering Position Amplifier |
| SPACE | Spacecraft Prelaunch Automatic Checkout Equipment |
| SPAD | Shuttle Payload Accommodation Document |
| SPAD | Subsystem Positioning Aid Device |
| SPADS | Shuttle Problem Action Data System |
| SPADS | Shuttle Problem Analysis Data System |
| SPAF | Simulation Processor and Formatter |