| 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) |