AAD may refer to:

Organizations

* ''Ad Altare Dei'', a Boy Scouts of America award * Advanced Automotive Design, a South African car manufacturer *

Ardent Leisure Ardent Leisure (formerly Macquarie Leisure Trust) is an Australian-based leisure company which owns and operates a leisure portfolio of over 100 assets across Australia, New Zealand and the United States. It is most known for its operation of th ...

, an Australian-based leisure company * AAD Education, Health and Sports (formerly, Athletes Against Drugs), an organization founded by Stedman Graham *

American Academy of Dermatology The American Academy of Dermatology (AAD) is a non-profit professional organization of dermatologists in the United States and Canada, based in Rosemont, Illinois, near Chicago. It was founded in 1938 and has more than 20,500 members. The Academy ...

* Australian Antarctic Division, which manages Australia's four Antarctic/sub-Antarctic stations, as well as Heard Island

Science and technology

* Average absolute deviation, a measure of absolute deviation and a way to report error against reference data in statistics * Advanced Air defence, an anti-ballistic missile in the Indian Ballistic Missile Defence Programme

Aviation

* Automatic activation device, a fail-safe device often used in a parachute pack * Adado Airport, airport serving Adado, Somalia (IATA code: AAD)

Computing

* aad, or "ASCII Adjust before Division", an Intel BCD opcode * AAD, the SPARS code for a CD that was recorded analog, mixed analog, and transferred digitally * Additional Authenticated Data passed to an "Authenticated Encryption with Associated Data" ( AEAD) block cipher mode of operation * Microsoft Azure active directory

Medicine

* Antibiotic-associated diarrhea * 7-Aminoactinomycin D (7-AAD), a fluorescent stain for DNA * Acute aortic dissection, a type of Aortic dissection * Antiarrhythmic drug, another name for antiarrhythmic agent

Other uses