| Abbreviation | Definition |
|---|---|
| FSCI | Foundation for Support of Civil Initiatives |
| FSD | Foundation for Science and Disability |
| FSD | Foundation for Sustainable Development |
| FSDA | Foundation for Sustainable Development in Africa |
| FSDF | Financial Services Data Foundation |
| FSDF | Foundation Spatial Data Framework |
| FSDS | Foundations of Spatial Data Science |
| FSE | Foundation of Self-Esteen |
| FSED | Foundation for Sustainable Enterprise and Development |
| FSEJ | Foundation for Socio-Economic Justice |
| FSF | Free Software Foundation |
| FSFE | Free Software Foundation Europe |
| FSFI | Free Software Foundation India |
| FSFI | Free Software Foundation of India |
| FSG | Foundation Strategy Group |
| FSI | Foundation Systems Inc |
| FSIF | Financial Services Industry Foundation |
| FSIF | First State Islamic Foundation |
| FSIT | Foundation Skills in Information Technology |
| FSL | Foundation for Senior Living |