ADT
ADT, as an acronym, may refer to:
- Abstract data type, a computer programming term
- Alternating decision tree, another term in computer programming
- Algebraic data type, a term from functional programming
- Androgen deprivation therapy, a common component of treatment for prostate cancer
- Asynchronous data transfer, a method of transferring data
- Automatic double tracking, an audio recording technology invented for The Beatles
- American Discovery Trail, a coast-to-coast hiking trail across the mid-tier of the United States
- Average Daily Traffic, to show the volume of traffic on a road in transportation planning
- Average downtime, a simple quantification of a system's reliability
- Autodesk Architectural Desktop, CAD software from Autodesk
- Admission, Discharge, and Transfer, a message type used in Health Level 7 formatted communication
- Adult diphtheria and tetanus vaccination
- Atlantic Daylight Time
- Active Denial Technology
- Android Development Tools
ADT may also refer to:
- ADT Security Services, a division of Tyco International, formerly American District Telegraph
- ADT College, a City Technology College in London
- ADT, a DfE-specified type of XML file used to transmit requests for school places between LAs