| Acronym | Definition |
|---|
| FSFI➣Female Sexual Function Index |
| FSFI➣Federazione fra le Società Filateliche Italiane (Italian: Federation of the Italian Philatelic Societies) |
| FSFI➣Free Software Foundation of India |
| FSFI➣Fédération Sportive Féminine Internationale (French: International Federation of Women's Sports; est. 1911) |
| FSFI➣Fimarge, Societat Financera d'Inversió (Catalan: Fimarge, Financial Investment Company; Andorra) |
| FSFI➣Flight Safety Foundation International (Russia) |