| Acronym | Definition |
|---|
| BIFF | Bangsamoro Islamic Freedom Fighters (Philippines) |
| BIFF | Bergen Internasjonale Filmfestival (Bergen International Film Festival) |
| BIFF | Beirut International Film Festival (Beirut, Lebanon) |
| BIFF | Bradford International Film Festival (UK) |
| BIFF | Big Improvements for Free |
| BIFF | Bahamas International Film Festival |
| BIFF | Berlin International Film Festival |
| BIFF | Binary Interchange File Format |
| BIFF | Boulder International Film Festival (Boulder, Colorado) |
| BIFF | Big Improvements For Free (Dilbert) |
| BIFF | Battlefield Identification Friend or Foe |
| BIFF | Backhoe Induced Fiber Failure :-) |