| Acronym | Definition |
|---|
| ATD➣Anthropomorphic Test Dummy |
| ATD➣Association for Talent Development (formerly American Society of Training Directors) |
| ATD➣Attack the Day |
| ATD➣Achieving the Dream |
| ATD➣Awakening the Dreamer |
| ATD➣Analog to Digital (converter) |
| ATD➣Atascadero (Amtrak station code; Atascadero, CA) |
| ATD➣Attraction Tickets Direct (various locations) |
| ATD➣Advanced Technology Demonstration |
| ATD➣Attribute Discovery |
| ATD➣Address Transition Detection |
| ATD➣Authorized Terminal Distribuitor |
| ATD➣Analog to Digital |
| ATD➣Active Torque Dynamics |
| ATD➣Accredited Tier Designer (Uptime Institute) |
| ATD➣Attention to Detail |
| ATD➣Atmospheric Technology Division (US National Center for Atmospheric Research) |
| ATD➣Assistant Technical Director |
| ATD➣Applied Technology Diploma (Florida) |
| ATD➣Advanced Technology Development |
| ATD➣At the Doctor's |
| ATD➣Against the Day (Glasgow band) |
| ATD➣Antidepressants |
| ATD➣Architectural Technology & Design (various schools) |
| ATD➣Anthropomorphic Test Device |
| ATD➣Acacia Training and Development (UK) |
| ATD➣Actual Time of Departure |
| ATD➣Art Teaching Diploma (various schools) |
| ATD➣Asynchronous Time Division |
| ATD➣Aerosol Transmissible Disease |
| ATD➣Automatic Target Detection |
| ATD➣Agree to Disagree (internet slang) |
| ATD➣Asset Transfer Date |
| ATD➣Amused to Death (Roger Waters album) |
| ATD➣Applied Technology Division |
| ATD➣Aircrew Training Device |
| ATD➣Arrival Time Difference |
| ATD➣Anti-Thyroid Drug |
| ATD➣Auto Trim Design (Fairbanks, AK) |
| ATD➣Acquired Toilet Disease (fictitious disease) |
| ATD➣All Things Democrat (website) |
| ATD➣Associated Tap Dancers (UK) |
| ATD➣Attitude Determination |
| ATD➣Address Transition Detection (circuit in asynchronous memory) |
| ATD➣Apprenticeship and Training Division |
| ATD➣Anti Terrorist Department (gaming) |
| ATD➣Adjustable Time Delay |
| ATD➣Aid to the Totally Disabled |
| ATD➣Automated Test Designer (software; @YourSide Consulting) |
| ATD➣Along Track Distance (aviation) |
| ATD➣Automated Thermal Desorber (gas chromatography analysis column type) |
| ATD➣Aerospace Technology Division (Library of Congress; formerly Aerospace Information Division) |
| ATD➣6-Etioallochol-1,4-Diene-3,17-Dione (aromatase inhibitor) |
| ATD➣Associação Terras Dentro |
| ATD➣Alzheimer's Type Dementia (clinical disorder) |
| ATD➣Applied Thermodynamics (physics) |
| ATD➣Aided Target Detection |
| ATD➣Atherothrombotic Disease |
| ATD➣Association des Techniciens de Dialyse (French: Association of Dialysis Technicians) |
| ATD➣Abrams Travel Data Services |
| ATD➣Aquitaine Transmission Distribution (French automotive parts company) |
| ATD➣Available to Deploy |
| ATD➣Authorized Terminal Distributor |
| ATD➣Anti-Tank Ditch |
| ATD➣Alliance Tchadienne pour la Démocratie et le Développement (Chadian Alliance for Democracy and Development, Chad) |
| ATD➣Authorization Termination Date |
| ATD➣Automated Tactical Data Link |
| ATD➣Air and Toxics Division |
| ATD➣Accelerated Titration Design |
| ATD➣Assistant Train Dispatcher (NYC Transit Authority) |
| ATD➣Active Threat Defense (Cisco) |
| ATD➣Acceptance and Takeover Date |
| ATD➣Antitheft Device |
| ATD➣Automatic Tube Dispenser |
| ATD➣Astronaut Translation Device |
| ATD➣Automated Training Device |
| ATD➣Adaptive Threshold Detector |
| ATD➣Aero Tech Designs (Coraopolis, PA) |
| ATD➣Audio Tone Detector |
| ATD➣Automatic Tone Detector (Sprint) |
| ATD➣Association of Telecommunications Dealers |
| ATD➣ATM Test Development |
| ATD➣Actuals To Date |
| ATD➣AUTOVON Tandem Digital |
| ATD➣Automatic Target Designation |
| ATD➣Assignment and Transmittal Document (SAIC stock) |
| ATD➣Average to Date |
| ATD➣Aviation Test Directorate |
| ATD➣Air Technician Detachment |
| ATD➣Advanced Technologies Demonstration (ARPA/Bell Atlantic) |
| ATD➣Amphibische Technische Dienst (Dutch) |
| ATD➣Anti Theft Discount (insurance) |
| ATD➣Assistance Technique Directe (French: Direct Technical Assistance) |
| ATD➣All Terrain Drilling Pty Ltd (Australia) |