AAD is a
three-letter acronymthat may refer to:
* Advanced Air defense, India's defense program to develop a multi-layer Ballistic missile defense shield.
AAD Education, Health and Sports(formerly, Athletes Against Drugs)
Administrative Accompanying Document, an EU document to control duties within the Union and member states.
American Academy of Dermatology
7-Amino-actinomycin D(7-AAD), a fluorescent stain for DNA
* ASCII Adjust before Division, an Intel 80x86 processor instruction
Associação de Activismo para a Democracia, a political party in Macau
Australian Antarctic Division, which manages Australia's four Antarctic/sub-Antarctic stations, as well as Heard Island
Automatic activation device, a "fail-safe" device often used in a parachute pack to automatically deploy the reserve if a predetermined altitude is passed at a high rate of speed
* Analog, analog, digital, a three-letter code for a CD that was recorded analog, mixed analog, and transferred digitally
* IATA airport code for
Ad-Dabbah Airportin Ad-Dabbah, Sudan
* ICAO airline designator for
Aero Aviation Centre Ltd.in Canada
Armee-Aufklärungsdetachement 10Switzerland's new SAS-type Special Forces unit, which is an all-volunteer professional unit with a rigorous selection process
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