STTF
| Acronym | Definition |
|---|---|
| STTF | Severance Tax Trust Fund (various states) |
| STTF | Severn Trent Trust Fund (est. 1997; UK) |
| STTF | State Traffic Task Force (Australia) |
| STTF | Software Technology Transfer Finland |
| STTF | Save the Twin Towers Foundation (New York) |
| STTF | Small Town Task Force (EPA) |
| STTF | Swiss Table Tennis Federation |
| STTF | Special Tank Task Force |