FFIO
| Acronym | Definition |
|---|---|
| FFIO | Flexible File Input Output |
| FFIO | Flanders Foreign Investment Office (Belgium) |
| FFIO | flexible file input/output |
| FFIO | Freakin' Figure It Out (polite form) |
| FFIO | Freiwilligen Feuerwehr Idar Oberstein (German: Volunteer Fire Department Idar-Oberstein; Idar-Oberstein, Germany) |