| Acronym | Definition |
|---|
| FISL➣Fórum Internacional Software Livre (Portugese: International Free Software Forum) |
| FISL➣Federal Insured Student Loan |
| FISL➣Fidelity Investment Services Ltd. |
| FISL➣Formation Internationale aux Sports de Loisirs (French: International Training for Sports Leisure) |
| FISL➣Fund for International Service Learning (est. 2004) |
| FISL➣FirstAssist Insurance Services Limited (UK) |
| FISL➣Fidelity Investments Singapore Limited |