Look up ASD in Wiktionary, the free dictionary.

ASD most often refers to:

• Autism spectrum disorder, a neurodevelopmental condition
• Acute stress disorder, a psychological response

ASD may also refer to:

In science and technology

Biology

• ASD (database), an online directory of allosteric proteins and their structure
• Asd RNA motif, a structure in lactic-acid bacterium ribonucleic acid
• Aspartate-semialdehyde dehydrogenase, an amino-acid-synthesising enzyme in plants, fungi and bacteria

Medicine

• Antiseizure drug, an epilepsy medication
• Antiseptic Dorogov's Stimulator, a Russian topical veterinary drug
• Arthroscopic subacromial decompression, a surgical procedure on the shoulder
• Atrial septal defect, a congenital heart defect

Computing

• Accredited Symbian Developer, a computer programming qualification
• Adaptive software development, a software development process
• Aircraft and Scenery Designer, an add-on for the Microsoft Flight Simulator 4.0 video game
• Andromeda Software Development, a Greek audio-visual demogroup
• Application Specific Device, a Wi-Fi certification type

Other uses in science and technology

• Active sound design, a technology used in cars to alter or enhance the sound inside and outside of the vehicle
• Adjustable-speed drive, of an electric motor
• Allowable stress design, a structural design methodology
• Aspirating smoke detector, an indoor fire-protection device
• Acceleration spectral density, a mechanical vibration test parameter

Transport

• Aeronautical Systems Division (1961-1992), US Air Force technical division
• Air Sinai, by ICAO code
• Amsterdam Centraal railway station, station code
• Andros Town International Airport, by IATA code
• Slidell Airport, by FAA LID

Education

United States

• Academy for Science and Design, Nashua, New Hampshire
• Alabama School for the Deaf, part of the Alabama Institute for Deaf and Blind
• Allentown School District, Pennsylvania
• American School for the Deaf, West Hartford, Connecticut
• Anchorage School District, Alaska
• Armstrong School District (Pennsylvania)
• Ashland School District (Oregon)
• Avondale School District, Auburn Hills, Michigan

Other places

• American School of Doha, Qatar
• American School of Douala, Cameroon
• American School of Dubai

Government and politics

• AeroSpace and Defence Industries Association of Europe, a European business association
• Alliance for Securing Democracy, a trans-Atlantic group
• Alliance for Social Democracy, a political party in Benin
• Architectural Services Department, Hong Kong
• Australian Signals Directorate, intelligence agency
• United States Assistant Secretary of Defense, one of several senior US Department of Defense officials

Other uses

• ASD (album), 2015, by A Skylit Drive, an American band
• Asas language, by its ISO 639 code
• A. S. Byatt (born 1936), English critic, novelist, poet and short story writer, who was born Antonia Susan Drabble and whose married name is Antonia Susan Duffy
• Association for the Study of Dreams