| Abbreviation | Definition |
|---|---|
| SPU | Special Parts Used |
| SPU | Stereo Pick-Up |
| SPU | Stored Power Unit |
| SPU | Stream Processing Unit |
| SPU | System Processing Unit |
| SQM | Satellite Quality Monitor |
| SR | Set Reset |
| SR | Side Release |
| SR | Superior Resolution |
| SRC | System Resource Controller |
| SRD | Secure Remote Desktop |
| SRI | Service Reminder Indicator |
| SRMT | Self-Reproducing Machine Tool |
| SRT | Stepping Rate (for the processor) |
| SSA | Slot-to-Socket Adapter |
| SSA | Stereo Source Amplifier |
| SSASP | Secure Scalable Advanced Sensor Processor |
| SSD | SBD (Short Burst Data) Subscriber Device |
| SSD | Single Sided Disk |
| SSD | Solid State Drive |