FA
- ALCO FA
- Area forecast
- Fa (brand)
- Fa (letter)
- Fa (musical note)
- Fa (philosophy)
- Fa Ngum
- Fa Yuiry
- Fa Ziying and Lao Rongzhi
- Fa of Xia
- Fa, Aude
- Factor analysis
- Falange Auténtica
- Fall (unit)
- Fanconi anemia
- Fantasy Advertiser
- Fayalite
- Faʼ language
- Femtoampere
- Ferrocarriles Argentinos
- Finance Act
- Firearms (video game)
- First ascent
- Fisheries Agency
- Fleet Admiral
- Fluorescein angiography
- Folic acid
- Food Addicts in Recovery Anonymous
- Football association
- Forschungsamt
- Fractional anisotropy
- Friedreich's ataxia
- Friends Academy
- Frontal Aviation
- Fur Affinity
- Intermediate of Arts
- NZR FA class
- Nikon FA
- Persian language
- Safair
- The Football Association
- Toyota FA