AAD may refer to:

Organizations Ad Altare Dei, a Boy Scouts of America award Advanced Automotive Design, a South African car manufacturer AAD Education, Health and Sports (formerly, Athletes Against Drugs), an organization founded by Stedman Graham American Academy of Dermatology Australian Antarctic Division, which manages Australia's four Antarctic/sub-Antarctic stations, as well as Heard Island

Science and technology

Aviation Advanced Air defence, an anti-ballistic missile in the Indian Ballistic Missile Defence Programme Africa Aerospace and Defence Expo, a biennial trade show in South Africa Automatic activation device, a fail-safe device often used in a parachute pack Adado Airport in Galguduud Region, Somalia (IATA airport code AAD) Computing aad, or "ASCII Adjust before Division", one of the Intel BCD opcodes Additional authenticated data passed to an "Authenticated Encryption with Associated Data" (AEAD) block cipher mode of operation Microsoft Azure active directory

Medicine and genetics Acute aortic dissection, a type of Aortic dissection Antiarrhythmic drug, another name for antiarrhythmic agent Antibiotic-associated diarrhea 7-Aminoactinomycin D (7-AAD), a fluorescent stain for DNA Arbitrarily amplified DNA (AAD), a family of DNA profiling methods

Other scientific and technological uses

Average absolute deviation, a measure of absolute deviation and a way to report error against reference data in statistics AAD, the SPARS code for a CD that was recorded analog, mixed analog, and transferred digitally

Other uses Amal language, a language of Papua New Guinea Attitude-toward-the-ad models in marketing, a way of measuring the success of an advertisement

See also AD (disambiguation) 'Ad (disambiguation)