ADA
# ADA

ADA or AdA may refer to:

## Organizations

* Amazon Development Agency, a development agency in Brazil
* American Decency Association, an advocacy group against pornography
* American Dental Association
* American Diabetes Association
* American Dietetic Association, the former name of the Academy of Nutrition and Dietetics
* Americans for Democratic Action, a liberal advocacy organization
* Amigos dos Amigos, a drug cartel in Rio de Janeiro
* Association of Drainage Authorities, a membership body for those involved in water level management in the UK
* Australian Digital Alliance, a copyright advocacy group
* Australian Dental Association
* Austrian Development Agency, a development aid agency

### Businesses

* Aerolínea de Antioquia, a Colombian Airline
* Alternative Distribution Alliance, a music distributor owned by Warner Music Group

### Military

* Aeronautical Development Agency, an agency of India's Ministry of Defence
* Air Defense Artillery Branch, a branch of the U.S. Army specializing in anti-aircraft weapons
* Angehöriger der Armee (AdA), a person on active duty in the Swiss Armed Forces
* Armée de l'Air, the French Air Force

## Science and technology

* ADA, a cryptocurrency
* ADA collider, an electron–positron collider
* Ada (programming language), a high-level computer programming language
* Adenosine deaminase, an enzyme involved in purine metabolism
* Advanced Distribution Automation, an extension of intelligent control over an electrical power grid
* Analog-to-digital converter (ADA or A/DA), an electronic converter in some electronic devices, often musical
* Apple Design Awards, an event at the Apple Worldwide Developers Conference
* Azodicarbonamide, a food additive also used in plastics production
* ADA (buffer), a chemical buffer in the physiological range

## Law

* Airline Deregulation Act, a 1978 US law removing governmental control from commercial aviation
* Americans with Disabilities Act of 1990, a U.S. law that prohibits discrimination on the basis of disability
* Antideficiency Act, a U.S. law that prohibits the federal government from incurring debts not authorized by Congress
* Assistant District Attorney, a US government attorney position

## Other uses

* Adana Şakirpaşa Airport (IATA code)
* After the Development of Agriculture (A.D.A.), a system of counting years
* Dangme language (ISO 639-2 and ISO 639-3 codes)
* Asociación Deportiva Agropecuaria, a football club based in the city of Jaén, Cajamarca, Perú
