ASD

ASD can refer to:

Biology and medicine

* Acute stress disorder, a psychiatric disorder
* Atrial septal defect, a medical condition affecting the heart
* Autism spectrum disorder, a set of brain development disorders

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 used to control electrical engine's speed
* Aigle - Sepey - Diablerets, a Swiss mountain railway
* Allowable stress design, a structural design methodology.
* Andromeda Software Development, a Greek demogroup
* Azimuthing stern drive, a drive/direction system for state of the art "tractor" tugboats
* QWERTY keyboard home row, of which ASD are the three leftmost keys

Film and Literature

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

ocial sciences and society

* After school detention, detention held after school
* American School for the Deaf in Hartford, Connecticutof Dubai] , an educational institute located in Dubai, United Arab Emirates
* American Standard Companies, a global provider of air conditioning systems
* Anchorage School District, the district of schools in Anchorage, Alaska
* Academy for Science and Design, a unique charter school in Merrimack NH