FRAT
| Acronym | Definition |
|---|---|
| FRAT | Fraternity |
| FRAT | First Response Assault & Tactical |
| FRAT | Fuzzy Reasoning Adaptive Thresholding (NASA nonexclusive patent license agreements) |
| FRAT | Free Radical Assay Technique |
| FRAT | Friendly Radio Amateur Team (Toledo, Ohio) |
| FRAT | First Responder Automated Data Tool |
| FRAT | Frankfurt Air Terminal |