| FSF | Faculty Staff Fitness 
| Others |
| FSF | Faroe Islands Football Association
| Others |
| FSF | Fashion Scholarship Fund
| Others |
| FSF | Fast Sea Frame
| Others |
| FSF | Fast Search Forward
| Others |
| FSF | Fat Software Foundation
| Others |
| FSF | Feathers Scales Fur
| Others |
| FSF | Federation Sim Fleet
| Others |
| FSF | Fellowship and Scholarship Fund
| Others |
| FSF | Female Seeking Female
| Others |
| FSF | Festival slovenskega filma
| Others |
| FSF | Fibrin Stabilizing Factor
| Others |
| FSF | File Scan Feature
| Others |
| FSF | File Scanning Framework
| Others |
| FSF | File Skip Forward
| Others |
| FSF | File System Factory
| Others |
| FSF | File System Forward
| Others |
| FSF | Financial Stability Forum
| Others |
| FSF | Financial Standards Funds
| Others |
| FSF | Finished Square Feet
| Others |
| FSF | First Serve Fault
| Others |
| FSF | First Static Firing
| Others |
| FSF | Flash Smelting Furnace
| Others |
| FSF | Flat Floor Short Forward
| Others |
| FSF | Flight Safety Foundation
| Others |
| FSF | Fonterra Shareholders Fund
| Others |
| FSF | Food Service Facility
| Others |
| FSF | Food Service Film
| Others |
| FSF | Football Supporters Federation
| Others |
| FSF | Foreign Security Forces
| Others |
| FSF | Forensic Science Foundation
| Others |
| FSF | Forward Skip File
| Others |
| FSF | Frame Status Field
| Others |
| FSF | Free Simple and Fast
| Others |
| FSF | Free Software File
| Others |
| FSF | Free Software Fndn
| Others |
| FSF | Free Software Foundation
| Others |
| FSF | Free Software Fundation
| Others |
| FSF | Free Speech Fights
| Others |
| FSF | Free Standing Film
| Others |
| FSF | Friends Of Science Fiction
| Others |
| FSF | Friends Supporting Friends
| Others |
| FSF | FSF Stands for Finished
| Others |