FTSF
| Acronym | Definition |
|---|---|
| FTSF | Fédération des Travailleurs Socialistes de France (French: Federation of Socialist Workers of France) |
| FTSF | Foreningen Til Sprydstagens Forevigelse (Danish sailing club) |
| FTSF | Fair Trade Software Foundation (EU) |
| FTSF | Full Time Support Force |
| FTSF | Formation Technique sans Frontières (French: Technical Training without Borders; Switzerland) |