FIRN
| Acronym | Definition |
|---|---|
| FIRN | Florida Information Resource Network (Florida Educational Network) |
| FIRN | Financial Integrity Research Network (Australia) |
| FIRN | Foreign-Born Information & Referral Network (Columbia, Maryland) |
| FIRN | Forensic Institute Research Network (Glasgow, Scotland, UK) |
| FIRN | Foundation to Improve Renal Nutrition (Antelope Valley; California) |
| FIRN | Functional Imaging Research Network (Canada) |