FIIB
| Acronym | Definition |
|---|---|
| FIIB | Fortune Institute of International Business |
| FIIB | First Islamic Investment Bank (est. 1997) |
| FIIB | Federal Investigation and Intelligence Bureau |
| FIIB | Freie Initiative Improvisation Berlin (German: Free Improvisation Initiative Berlin; Berlin, Germany) |
| FIIB | Funeral Industry Insurance Brokers (Australia) |