| Abbreviation | Definition |
|---|---|
| SPU | Special Powers Unit |
| SPUR | Community Agricultural Research Institute |
| SPURS | Service Patriotism Unity Responsibility And Sacrifice |
| SPZ | Stream Protection Zone |
| SQ | Status Quo |
| SQT | Software Qualification Testing |
| SQW | Strategic Quota Watch |
| SR | Special Response |
| SR | Standard Reference |
| SR | Summary Record |
| SR/NSR | significant risk/non-significant risk |
| SRA | Senior Resident Agent |
| SRA | Separate Reporting Activity |
| SRA | Significant Regulatory Action |
| SRA | Special Review Assessment |
| SRA | Superior Rights Amendment |
| SRBC | Susquehanna River Basin Commission |
| SRC | Scientific Review Committee |
| SRdevice | Significant risk device |
| SRE | Special Reporting Element |