FEFF
| Acronym | Definition |
|---|---|
| FEFF | Festival Européen du Film Fantastique (French: European Fantastic Film Festival) |
| FEFF | Far East Film Festival |
| FEFF | Free Energy Force Field |
| FEFF | Fail Early Fail Fast (pharmaceutical industry) |
| FEFF | Florida Education Freedom Foundation |
| FEFF | Future Engineering Faculty Fellowship Program (Historically Black Colleges and Universities; Office of Naval Research) |