| Abbreviation | Definition |
|---|---|
| SPI | SCSI (Small Computer System Interface) Parallel Interface |
| SPI | SCSI-3 (Small Computer System Interface) Parallel Interface |
| SPI | Serial Peripheral Interface |
| SPI | Synchronous Parallel Interface |
| SPIB | Serial Peripheral Interface Bus |
| SPICE | Simulation Program with Integrated Circuit Emphasis |
| SPICE | Single Pass Inkjet Color Engine |
| SPIS | Smart Plug-Ins |
| SPM | Scratch Pad Memory |
| SPOR | Sudden Power Off Recovery |
| SPORT | Serial Port |
| SPP | Scalable Parallel Processor |
| SPP | Snort Pre-Processor |
| SPP | System Platform Processor |
| SPS | Sensor Port Signal conditioning |
| SPS | Serial Peripheral System |
| SPS | Service Programming System |
| SPS | Speed Pad System |
| SPST | Single-Pull Single-Throw |
| SPU | Sound Processing Unit |