| Abbreviation | Definition |
|---|---|
| FIN | Firearms Identification Number |
| FINE | Freekin Ignorant Neanderthal Enforcement |
| FIO | Federal Insurance Office |
| FIP | Firearms Interest Police |
| FIP | Firearms Interest To Police |
| FIRE | Fingerprint Identify Report And Enforce |
| FIRE | Forensic and Incident Response Environment |
| FIRPTA | Foreign Investment Real Property Tax Act |
| FIRST | Firearm Instruction And Responsibility Safety Training |
| FIRST | Firearm Instruction Responsibility and Safety Training |
| FIST | File Inform Settle Or Trial |
| FIT | Females In Trouble |
| FIU | Fingerprint Identification Unit |
| FKA | Formerly Known As |
| FL | Family Law |
| FLAP | Federal Legal Appeal Project |
| FLAP | Financial And Legal Advisory Panel |
| FLAP | Financial Legal Advisory Panel |
| FLAP | Financial Legal And Advisory Panel |
| FLBA | Family Law Bar Association |