| 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 |