FA or fa may stand for:

  • Area forecast (aviation)
  • Certified mail (Scott catalog prefix)
  • Fa, a municipality in France
  • Factor analysis
  • Faculty assistant
  • Falkland Islands (FIPS country code)
  • Fame Academy
  • Family assistance
  • Fanconi anemia
  • Farm Aid
  • Farmer's Almanac
  • Fatty acid
  • Feasibility analysis
  • Federal agent
  • Felonious assault
  • Fenton's Approximation
  • Fibonacci Association
  • Field artillery
  • Fiery Avenger
  • Filiae Amatissimae (Lat. "To My Beloved Daughter")
  • Final approach (aviation)
  • Final art
  • Finanzamt (Germany)
  • Fine arts
  • First aid
  • First ascent (climbing)
  • Fixed assets
  • Flight attendant
  • Fluorescein angiogramic angiography
  • Fluorescent antibody
  • For Auction
  • Football Association (England)
  • Frankford Arsenal
  • Fredericksburg Academy
  • Friederich's Ataxia
  • Functional assessment
  • Fuck all (used in the expression Sweet FA, which originally stood for Sweet Fanny Adams)