ASD

ASD may refer to:

Biology and medicine

• Acute stress disorder, a psychiatric disorder
• Autism spectrum disorders
• Antiseizure drug
• Aspartate-semialdehyde dehydrogenase
• Asd RNA motif
• ASD (database)
• Atrial septal defect
• Antiseptic Dorogov's Stimulator
• Arthroscopic subacromial decompression, a surgical shoulder joint procedure

Computing, engineering, technology, and transport

• Accredited Symbian Developer, a qualification for developers of software for Symbian OS
• Adaptive Software Development, a software development process
• Adjustable-speed drive, also Variable Speed Drive, refers to electronic equipment that drives motor on a user chosen frequency
• Aeronautical Systems Division (1961-1992), US Air Force technical division
• Allowable stress design, a structural design methodology
• Andromeda Software Development, a Greek demogroup
• Azimuth stern drive (cf. azimuth tractor drive), a drive/direction system for state of the art tugboats
• QWERTY keyboard home row, which begins with ASD
• Aircraft Situation Display
• Asociatia Studentilor in Drept

Education

• Academy for Science and Design, a charter school in Merrimack, New Hampshire
• American School for the Deaf in Hartford, Connecticut
• American School of Doha, the largest private high school in Qatar
• American School of Dubai, an educational institute located in Dubai, United Arab Emirates
• Anchorage School District, the district of schools in Anchorage, Alaska
• Armstrong School District (Pennsylvania), the district of schools in Armstrong County, Pennsylvania
• After school detention

Music

• A Skylit Drive, a six-piece, post-hardcore band
• Another Single Day, an American rock band

Film and literature

• A Scanner Darkly, a 1977 novel by Philip K. Dick
• A Scanner Darkly (film), the 2006 film based on the book, and directed by Richard Linklater