Fas
- Anatomical Society
- Club Deportivo FAS
- Faculty of Arts and Sciences (disambiguation)
- Fas (Roman)
- Fas language
- Fas receptor
- Fass (disambiguation)
- Fatty acid synthase
- Faz (disambiguation)
- Federal Aid Highway System
- Federal Antimonopoly Service
- Federation Air Service
- Federation of American Scientists
- Federation of Astronomical Societies
- Feedback arc set
- Femmes Africa Solidarité
- Fetal alcohol syndrome
- Fez, Morocco
- Fiat Automobili Srbija
- Film Authors' Studio
- Final assembly schedule
- Financial Assistance Scheme
- Football Association of Singapore
- Foreign Agricultural Service
- Foreign accent syndrome
- Frankfurter Allgemeine Sonntagszeitung
- Free African Society
- Free Alongside Ship
- FÁS
- NetApp FAS
- Poti, Georgia
- Salvadoran Air Force