| Acronym | Definition |
|---|
| UIF | UAV (Unmanned Aerospace Vehicle) Interim Flight |
| UIF | Unità di Informazione Finanziaria (Italian: Financial Information Unit) |
| UIF | Unidad de Investigación Financiera (Spanish: Financial Investigation Unit) |
| UIF | Unemployment Insurance Fund |
| UIF | Universal Image Format |
| UIF | Universal Indexing Frame |
| UIF | Unnumbered Information Frame |
| UIF | Unidad de Inteligencia Financiera (Spanish: Financial Intelligence Unit; various nations) |
| UIF | United Indoor Football |
| UIF | Unfavorable Information File |
| UIF | Universal Institutional Funds |
| UIF | United Islamic Front |
| UIF | User Interface Friction |
| UIF | Unión Internacional de Ferrocarriles (French: International Union of Railways) |
| UIF | Union of International Fairs (various locations) |
| UIF | Union Infirmières France |