| Abbreviation | Definition |
|---|---|
| FAQ | Frequently Asked Questions (text file) |
| FAQ | Frequently Asked Questions text file |
| FAR | Farandole Composer Module Music file |
| FAS | Compiled program (Macsyma) |
| FAV | MicroSoft Outlook Favorites shortcut file |
| FAX | Fax (generic Group 3 1bit encoded data) (most Fax programs) |
| FBM | Fuzzy Bitmap |
| FC | Harvard Graphics 2.0 Spell checking dictionary |
| FCM | Jlpak10.zip Forward CoMpression Binary patch file |
| FCP | FLAMES CheckPoint Restart file |
| FD | Field offsets for compiler - DataFlex |
| FD | Front Door Resource file |
| FD | Microsoft Fortran Declaration file |
| FDE | FLAMES Dataset Export File (Ternion Corporation) |
| FDF | File Description Framework |
| FDF | Forms document (Adobe Acrobat) |
| FDW | Form (F3 Design and Mapping) |
| FEB | Figure editor button bar (WordPerfect for Win) |
| FEI | Fatal Error Infotable (Geoworks) |
| FESF | File Encryption Solution Framework |