| Acronym | Definition |
|---|
| ADT | Androgen Deprivation Therapy (cancer treatment) |
| ADT | Adult (airline passenger type) |
| ADT | Abstract Data Type (OOP class) |
| ADT | Architectural Desktop (Autodesk) |
| ADT | Average Daily Traffic |
| ADT | Atlantic Daylight Time |
| ADT | Application Development Trends |
| ADT | Aleutian Daylight Time (-9 Hours GMT) |
| ADT | American Discovery Trail (proposed multi-use trail across USA) |
| ADT | Active Duty for Training |
| ADT | Agence de Développement Touristique (French: Tourist Development Agency) |
| ADT | Average Daily Trips (transportation) |
| ADT | Articulated Dump Truck |
| ADT | Annual Daily Traffic |
| ADT | Agribusiness Development Team (US DoD) |
| ADT | Adenosine Triphosphate |
| ADT | Automatic Double Tracking |
| ADT | Advanced Dicing Technologies (Horsham, Pennsylvania) |
| ADT | Application Development Toolkit |
| ADT | Application Development Tool |
| ADT | Active Denial Technology |
| ADT | Adult Day Training |
| ADT | Adult Diphtheria Tetanus (vaccination) |
| ADT | Astronomy Diagnostic Test |
| ADT | Access Developer's Toolkit (Microsoft) |
| ADT | Advanced DRAM Technology |
| ADT | Agriculture Development Team (US DoD) |
| ADT | Average Daily Turnover (stock trading) |
| ADT | Application Data Types |
| ADT | American District Telegraph Company |
| ADT | Admissions, Discharge, Transfer (healthcare) |
| ADT | Application Development Team |
| ADT | Active Duty Tour |
| ADT | Art Design Technology |
| ADT | Aided Tracking |
| ADT | Air Dry Ton (cellulose pulp) |
| ADT | Advanced Data Technologies |
| ADT | Agent Desktop |
| ADT | Alliance Development Trust (relief and development arm of the National Christian Evangelical Alliance of Sri Lanka) |
| ADT | Alaskan Daylight Time (GMT -0800) |
| ADT | Air Data Tester |
| ADT | Applied Data Trends, Inc |
| ADT | Approved Departure Time |
| ADT | Administrative Delay Time |
| ADT | Assign Digital Transmission Group |
| ADT | Accelerated Degradation Testing |
| ADT | Architecture Development Team |
| ADT | Air Dissolving Tube |
| ADT | Average Daily Theoretical (casino industry) |
| ADT | Attribute Definition Table |
| ADT | Airborne Data Terminal |
| ADT | Accumulated Deployed Time |
| ADT | Air Data Transducer |
| ADT | Admission, Disposition, and Transfer |
| ADT | Active Disk Table |
| ADT | Automatic Digital Tester |
| ADT | Advanced Development Team |
| ADT | Automated Detection and Tracking |
| ADT | Associative Design Technology |
| ADT | Acknowledged Data Transfer |
| ADT | Automatic Data Translator |
| ADT | Aerated Drain Tank |
| ADT | Adsorbed Diphtheria Tetanus (vaccine) |
| ADT | Atomic Damage Template |
| ADT | Automatic Detection & Tracking |
| ADT | Alphanumeric Display Terminal |
| ADT | Architectural Development Team |
| ADT | Asset Discovery Tool |
| ADT | Audio Detect Tone |
| ADT | Average Download Time |
| ADT | Abnormal Data Type |
| ADT | Address Detector Transition |
| ADT | Asynchronous Data Teleservice |
| ADT | Analog Data Tape |
| ADT | Analyst Dependent Technique |
| ADT | Anchorage Daily Times |
| ADT | Authorized Dealer Team |
| ADT | Anomaly Detection Tool |
| ADT | Available Device Table |
| ADT | Alternative Display Technology |
| ADT | Answer Detection Technology |
| ADT | Advanced Dialoguing Techniques |
| ADT | Accettazione Dismissione Trasferimento (Italian healthcare) |
| ADT | Advanced Digital Terminal |
| ADT | American Dial Tone (Dunedin, FL) |
| ADT | All-Defensive Team (sports) |
| ADT | Ashland Daily Tidings (Ashland, OR) |
| ADT | Android Development Tools (software) |