| Abbreviation | Definition |
|---|---|
| SSS | System/Subsystem Specification |
| SSSI | Scientific Systems and Software International |
| SSSO | Software System Support Office |
| SSSTRP | Software System Safety Technical Review Panel |
| SSSTRP | Software Systems Safety Technical Review Panel |
| SSSTRP | System Software Safety Technical Review Panel |
| SST | Scroll Screen Tracer |
| SST | Secure Shell Toolkit |
| SST | Service Support Tool |
| SST | Service System Transition |
| SST | Standard Service Tool |
| SST | Statistical Software Tool |
| SST | Statistical Software Tools |
| SSTB | Swedish Software Testing Board |
| SSTC | Systems and Software Technology Conference |
| SSTG | Science Software Transfer Group |
| SSU | seamless software update |
| SSV | Server Software Version |
| SSV | software security vulnerabilities |
| SSV | Systems Software Verification |