| Acronym | Definition |
|---|
| FIAT | Fabbrica Italiana Automobili Torino (Italian automobile manufacturer) |
| FIAT | Field Information Agency, Technical (various organizations) |
| FIAT | Fabbrica Italiana Di Automobili Torino |
| FIAT | Fonds d'Intervention pour l'Aménagement du Territoire (French: Intervention Fund for Regional Development) |
| FIAT | Feeble Italian Attempt at Transportation (car slang) |
| FIAT | Flatus, Ignis, Aqua, Terra (Latin: Air, Fire, Water, Earth) |
| FIAT | Foundations of Intelligence Analysis Training |
| FIAT | Forest Industries Association of Tasmania |
| FIAT | Felony Investigative Assistance Team (Illinois) |
| FIAT | FInite element Automatic Tabulator |
| FIAT | Federation Internationale des Archives de Television (French: International Federation of Television Archives) |
| FIAT | Flight Incident Analysis Tool (informatics, University of Hamburg) |
| FIAT | Fault Injection-Based Automated Testing Environment (computer system development) |
| FIAT | Field Inspection and Acceptance Test |
| FIAT | Fellow of the Institute of Asphalt Technology |
| FIAT | Fédération Internationale des Associations de Thanatoloques |
| FIAT | Fan/Inlet Acoustic Technology |