ADT

ADT or Adt may refer to:

People

 * Ana de Teresa (born 2001), Spanish footballer known as ADT
 * Harro Adt (born 1942), German diplomat
 * Katrin Adt (born 1972), German business executive

Places

 * Ada Municipal Airport, airport in Oklahoma (IATA: ADT)
 * American Discovery Trail, a system of recreational trails in the United States

Organizations and enterprises

 * Abu Dhabi Terminals, abbreviated ADT, port operator for all commercial ports in Abu Dhabi
 * ADT College, in London
 * ADT Inc., formerly American District Telegraph, which provides residential and small business electronic security and similar services in many countries
 * Adirondack Trailways, an American bus company

Biology and medicine

 * Androgen deprivation therapy, a common component of treatment for prostate cancer
 * Arogenate dehydratase, an enzyme
 * Azadithiolate cofactor, an organosulfur compound found in some enzymes

Computing

 * Abstract data type
 * Algebraic data type, a composite type in computer programming
 * Alternating decision tree, a machine learning method
 * Android Development Tools, a plugin for the Eclipse IDE
 * Asynchronous data transfer

Technology

 * Active Denial Technology, a non-lethal, directed-energy weapon developed by the U.S. military
 * Admission, discharge, and transfer system, a system for the structure of other types of business systems
 * Automatic double tracking, an audio recording technology

Sports

 * Asian Development Tour, a golf tour
 * Asociación Deportiva Tarma, a Peruvian association football club
 * Azkals Development Team, a Filipino football club

Other uses

 * adt, one of two ISO 639-3 codes for the Adnyamathanha language, an Australian Aboriginal language
 * Air Departure Tax, in Scotland
 * American death triangle, a deprecated rock climbing anchor system
 * Atlantic Daylight Time
 * Average Daily Theoretical (also known as "theoretical loss" or "theo"), a calculation used to determine gamblers' casino comps
 * Average Daily Traffic, used in transportation planning