| Abbreviation | Definition |
|---|---|
| SOS | Scheduled Oil Sample |
| SOS | Sherwood Oaks Seaters |
| SOS | Snake Oil Sales |
| SOS | Structured Operational Spinroot |
| SOSB | Secure Overall Safe Biometrics |
| SOT | Start Of Tile |
| SOV | Shut-Off Valve |
| SP | Saxon Porcelain |
| SP | Short Pneumatic |
| SP | Silk Purse |
| SP | Silver Plate |
| SP | Silver Plated |
| SP | Something Probably |
| SP | Special Product |
| SP | Special Production |
| SP | Square Pod |
| SP | Standard and Poor |
| SPAG | Small Particle Aerosol Generator |
| SPARC | Scalable Processor ARChitecture |
| SPARKLEARIUM | Place where you get the sparkle |