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 Adjustable-speed drive, of an electric motor Allowable stress design, a structural design methodology Aspirating smoke detector, an indoor fire-protection device 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 See also