| Acronym | Definition |
|---|
| ATM | Asynchronous Transfer Mode (broadband switching and transmission technology) |
| ATM | Automated Teller Machine |
| ATM | At The Moment |
| ATM | Atmosphere |
| ATM | Air Traffic Management |
| ATM | Azienda Trasporti Milanesi (Milano, Italy) |
| ATM | Automatic Teller Machine |
| ATM | Adobe Type Manager |
| ATM | At the Movies |
| ATM | At-The-Money (options trading) |
| ATM | Ataxia Telangiectasia Mutated (gene) |
| ATM | Texas A&M University (logo) |
| ATM | A Thousand Miles (Vanessa Carlton song) |
| ATM | Arabian Travel Market |
| ATM | Awareness Through Movement (Feldenkrais Method of Somatic Education) |
| ATM | Association of Teachers of Mathematics |
| ATM | Advanced Traffic Management |
| ATM | Apollo Telescope Mount |
| ATM | According to Me |
| ATM | Autoritat del Transport Metropolita (Spain) |
| ATM | Access to Music (UK music education organization) |
| ATM | Anything That Moves |
| ATM | Any Time Money |
| ATM | Army Ten-Miler |
| ATM | Amateur Telescope Maker(ing) |
| ATM | Advanced Toastmaster (formerly Able Toastmaster) |
| ATM | Around The Moon (soccer maneuver) |
| ATM | Ate Too Much |
| ATM | Atmosphere of Pressure |
| ATM | Angkatan Tentera Malaysia (Malaysian Armed Forces) |
| ATM | Anti-Tank Missile |
| ATM | Americans for Transportation Mobility |
| ATM | Application Traffic Management |
| ATM | Airborne Topographic Mapper |
| ATM | Articulación Temporo-Mandibular (Spanish) |
| ATM | Anjungan Tunai Mandiri |
| ATM | Articolazione Temporo Mandibolare (Italian: Tempomandibular Articulation) |
| ATM | Air Traffic Manager |
| ATM | Another Task Manager |
| ATM | Against the Mainstream |
| ATM | After These Messages (ezine) |
| ATM | Association Tunisienne des Mères (Tunisian Mother's Association) |
| ATM | Atomic Testing Museum (Nevada Test Site Historical Foundation) |
| ATM | Airborne Thematic Mapper |
| ATM | Alternative To Money |
| ATM | Addicted To Music |
| ATM | Annual Technical Meeting |
| ATM | Atmospheric Transport Model |
| ATM | Abstract Test Method (ISO 9646-1) |
| ATM | Air Transportation Management |
| ATM | Air Transport Movement |
| ATM | Association of Texas Midwives |
| ATM | ASEAN Transport Ministers |
| ATM | Abstinence 'Till Marriage |
| ATM | Aircrew Training Manual |
| ATM | Azienda Trasporti e Mobilità |
| ATM | Assembly, Test, & Manufacturing |
| ATM | Automated Theorem Prover |
| ATM | Air Turbine Motor |
| ATM | Advanced Trauma Management |
| ATM | Alternative Test Method (ITU-T) |
| ATM | American Turf Monthly |
| ATM | Air Training Missile |
| ATM | Air Tasking Message |
| ATM | Antitactical Missile |
| ATM | Able Toast Master (now Advanced Toastmaster) |
| ATM | Autonomous Trade Measures |
| ATM | Azienda Tramviaria Municipale |
| ATM | Associazione Trevisani nel Mondo (Treviso, Italy) |
| ATM | Assessoria Técnica de Mercado Ltda. |
| ATM | Automatic Touchdown Machine (football slang) |
| ATM | Acceptance Test Manual |
| ATM | Air Target Materials |
| ATM | Air Targeting Mode (military radar) |
| ATM | An Teanga Mharthanach (Irish) |
| ATM | Andrew Test Martin (wrestler) |
| ATM | Acetone Toluene Methanol |
| ATM | Automatic Ticketing Machine (airline industry) |
| ATM | assign traffic metering (US DoD) |
| ATM | Applying the Mathematics (UCSMC Math Textbooks) |
| ATM | Acoustic Telemetry Modem (oceanography) |
| ATM | Annuaire des Thèses en Mathematiques |
| ATM | Advanced Testing Method |
| ATM | Assistant Trainmaster |
| ATM | Atmospheric Camp |
| ATM | Advanced Testing Mode |
| ATM | Aerosol Trajectory Model |
| ATM | Account Technical Manager |
| ATM | Airlines of Tasmania, Australia (ICAO code) |
| ATM | Acrobat Type Manager |
| ATM | Agilent Technologies Malaysia |
| ATM | Auxiliary Transport Module |
| ATM | Advanced TEMPEST Microcomputer |
| ATM | Advanced Test Module |
| ATM | Adjustable Trigger Mechanism (firearms) |
| ATM | Automatic Test Methods |
| ATM | Advanced Traffic Mapping |
| ATM | Association of Textile Manufacturers |
| ATM | Atmospheric Transmission at Microwave Frequency |
| ATM | Area Telecommunications Manager (government personnel responsible for telecommunications in a specific region) |
| ATM | Automatic Time Management |
| ATM | Applied Tomography Experiment |
| ATM | Automatic Track Management |
| ATM | Automatic Track Merge heuristic |
| ATM | Circuit Actuation Test Mode |
| ATM | Agency & Transaction Management |