| Abbreviation | Definition |
|---|---|
| FINCIC | Financial Crisis Inquiry Commission |
| FIP | Family Investment Program |
| FIP | Forestry Investment Program |
| FIPS | Federal Information Processing Standard |
| FIR | Fact Information Report |
| FIRE | Freedom Is Real Education |
| FIREBIRD | Federal Investigator Registry for Bioinformatics Research Data |
| FIRST | Factors In Risk Selection Techniques |
| FIRST | Friendly Innovative Reliable Sincere Team |
| FISA | Foreign Intelligence Surveillance Act |
| FISC | Foreign Intelligence Surveillance Court |
| FISH | Fax Information System Handout |
| FISH | Fresh Ideas Start Here |
| FISH | Friendly Immediate Sympathetic Help |
| FISMA | Federal Information Security Management Act |
| FIST | Facilities, Instructions, Standards, and Techniques |
| FIT | Federal Income Tax |
| FIT | Foreign Independent Travel |
| FITF | Financial Investigative Task Force |
| FITF | First Inventor To File |