| Abbreviation | Definition |
|---|---|
| FSL | Foundations For Safety Leadership |
| FSL | Foundations in School Leadership |
| FSLI | Foundation Study and Language Institute |
| FSMF | Francis Senden Memorial Foundation |
| FSPC | Foundation for Sex Positive Culture |
| FSR | Foundation for |
| FSR | Foundation for Sarcoidosis Research |
| FSRT | Foundation Safety and Rescue Training |
| FSRT | Foundation Safety Rescue Test |
| FSRT | Foundation Safety Rescue training |
| FSS | Foundation for Shamanic Studies |
| FSS | Foundation Stock Service |
| FSSC | Foundation Skills for Social Change |
| FSSE | Foundation Skills for Surgical Educators |
| FSSE | Foundations of System Safety Engineering |
| FSSS | Foundation for the Scientific Study of Sexuality |
| FSST | Foundation for Student Science and Technology |
| FSTC | Foundation for Science Technology and Civilisation |
| FSTC | Foundation for Science Technology and Civilization |
| FTBI | Foundation of Technology Business Incubation |