| Acronym | Definition |
|---|
| FSAS | Famous Stars And Straps (clothing label) |
| FSAS | Food Standards Agency Scotland (UK) |
| FSAS | Fonds Spécial de l'Aide Sociale (French: Special Fund of Social Assistance; Belgium) |
| FSAS | Fédération Suisse des Associations Professionnelles du Domaine de La Santé (French: Swiss Federation of Professional Associations of the Health Domain; Switzerland) |
| FSAS | Florida School of Addictions Studies (Boca Raton, FL) |
| FSAS | Flight Service Automation System |
| FSAS | Franciscan Sisters of All Saints |
| FSAS | Fuel Savings Advisory System |
| FSAS | Force Selection and Activation System |
| FSAS | Fish Spawning Aggregation Site (Great Barrier Reef Marine Park Authority; Australia) |