| Abbreviation | Definition |
|---|---|
| SRO | Senior Responsibility Officer |
| SRO | Senior Reactor Operator |
| SROP | Senior Registered Options Principal |
| SRP | State Registered Physiotherapist |
| SRP | Skills Redevelopment Programme |
| SRP | Scaling And Root Planning |
| SRP | Soluble Reactive Phosphorus |
| SRR | Subcontractor Readiness Review |
| SRRP | Source Reduction Review Project |
| SRS | Script Recognition System |
| SRS | Sample Registration System |
| SRSG | Special Representative to the Secretary General |
| SRT | Surf Rescue Technician |
| SRT | Swiftwater Rescue Technician |
| SRTM | Static Root Of Trust For Measurement |
| SRTM | Shuttle Radar Topography Mission |
| SRW | System Requirement Wizard |
| SS | Suspended Solids |
| SSA | Supervisory Special Agent |
| SSB | Services Selection Board |
| SSB | Scramble Status Byte |
| SSBs | State Statistical Bureaus |
| SSBU | Shuttle Solar Backscatter Ultraviolet |
| SSC | Staff Selection Commission |
| SSC | Short Service Commission |
| SSC | Slot Size Code |
| SSCP | System Security Certified Practitioner |
| SSD | Store Stack Double-word |
| SSDP | Simple Service Discovery Protocol |
| SSDP | Sustainable Seed Development Programme |
| SSE | Senior Software Engineer |
| SSE | Senior Systems Engineer |
| SSI | Small Scale Industries |
| SSI | Social Security Income |
| SSI | Supplemental Security Income |
| SSI | Superior Support Individual |
| SSI | Scottish Statutory Instrument |
| SSID | Service Set Identifier |
| SSJ | Select Stacker and Jam |
| SSL | Secure Sockets Layer |
| SSL | Security Sockets Layer |
| SSM | Surface-to-Surface Missile |
| SSM | Source Support Module |
| SSM | Superficial Spreading Melanoma |
| SSMI | Sample Survey of Manufacturing Industries |
| SSMIS | Special Sensor Microwave Imager Sounder |
| SSMM | Superficial Spreading Malignant Melanoma |
| SSO | School Services Officer |
| SSO | System Security Officer |
| SSO | Senior Support Officer |