FFSL
| Acronym | Definition |
|---|---|
| FFSL | Floodgap Free Software License |
| FFSL | Football Federation of Sri Lanka |
| FFSL | Fédération Française des Syndicats de Libraires (French: French Federation of Bookseller Trade Unions) |
| FFSL | Fédération Française des Salons du Livre (French: French Federation of Book Fairs) |