FSFI
| 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) |