FTSO
| Acronym | Definition |
|---|---|
| FTSO | Fethiye Ticaret ve Sanayi Odasi (Turkish: Fethiye Chamber of Commerce; Fethiye, Turkey) |
| FTSO | Fenêtre de Toit Service Ouest (French: Skylight West Service) |
| FTSO | File Transfer Spooler for Open Systems |
| FTSO | Figure That Stuff Out |