ASA, as an initialism, stands for:

• In chemistry
  • Accessible Surface Area
  • Acetylsalicylic acid; see Salicylic acid and Aspirin
  • Acrylonitrile Styrene Acrylate
• In mathematics
  • Adaptive Simulated Annealing, an optimization algorithm
  • Angle-side-angle, a method for proving congruency of triangles
• In sport
  • Adult Soccer Association, in the United States
  • Agremiação Sportiva Arapiraquense, a soccer club from Brazil
  • Amateur Softball Association
  • American Sailing Association
  • American Speed Association, was a second-tier stock car racing circuit in the United States, now is a stock car sanctioning body
  • Atlético Sport Aviação, a soccer club from Angola
  • Australian Soccer Association, a former name of the soccer governing body now known as Football Federation Australia
• In photography
  • The name of a film speed rating system defined by the (then) American Standards Association (see below)
• In a military context
  • Anti-Soviet agitation
  • Army Security Agency, formerly the Signals Security Agency, an intelligence agency of the United States, see Arlington Hall
• One of a number of bodies or companies including
  • Acoustical Society of America
  • Advertising Standards Authority in the UK
  • American Society of Anesthesiologists and an IV rating of anesthetic risk
  • American Standards Association; a former name of the American National Standards Institute (ANSI)
  • American Sociological Association
  • American Statistical Association
  • Autism Society of America
  • Atlantic Southeast Airlines
• Associate of the Society of Actuaries
• the ICAO code for Alaska Airlines
• ASA (automobile), an Italian automobile
• allmennaksjeselskap, a Norwegian stock-based corporation, that is registered on a stock market, see aksjeselskap

See also

• Asa, a name

ASA | ASA | ASA | ASA