| Abbreviation | Definition |
|---|---|
| SSS | Single Source Service |
| SSS | Software Subscription Services |
| SSS | Standard Supply Service |
| SST | Service, Speed, and Technology |
| SSTC | Sold Subject To Contract |
| SSTG | Sector Specific Technical Group |
| SSU | Service Sector Unit |
| SSW | Safe Statement of Work |
| SSW | Safe Systems of Work |
| SSW | Self Safety Workplaces |
| SSW | Supplier Statement of Work |
| SSWE | Shared Source Working Environment |
| SSWP | Safe System of Work Plan (Health and Safety Authority, Ireland) |
| ST | smoked tobacco |
| STAC | Send To A Colleague |
| STAMP | Spending Time And Money Prodigiously |
| STAQ | Securities Trading Automated Quotation system |
| STAR | Safety Through Accountability And Recognition |
| STAR | Service, Teamwork, Achievement, and Recognition |
| STAR | Situation, Task, Action, Results |