| Acronym | Definition |
|---|
| ATT➣Attorney |
| ATT➣American Telephone and Telegraph, Inc. (AT&T) |
| ATT➣Attention |
| ATT➣Attached |
| ATT➣All The Time |
| ATT➣At This Time |
| ATT➣Attic (linguistics) |
| ATT➣Attitude |
| ATT➣Apprentice(ship) Technical Training |
| ATT➣Arms Trade Treaty (UN) |
| ATT➣Atentamente (Spanish) |
| ATT➣Attenuator |
| ATT➣Association of Taxation Technicians (UK) |
| ATT➣Automated Test Tools |
| ATT➣Authority to Test |
| ATT➣About Time Too |
| ATT➣Advanced Transportation Technology |
| ATT➣Active Torque Transfer |
| ATT➣Applecare Technician Training |
| ATT➣American Telephone and Telegraph |
| ATT➣Advanced Technical Training |
| ATT➣Afghan Transit Trade |
| ATT➣Attard (postal locality, Malta) |
| ATT➣American Tobacco Trail |
| ATT➣Air Tightness Testing |
| ATT➣Average Talk Time (telemarketing) |
| ATT➣Anti-Theft Technology (Intel Corp.) |
| ATT➣Authorization to Transport (firearm permit, Canada) |
| ATT➣alt.toys.transformers (newsgroup) |
| ATT➣African Think Tank (Australia; leadership) |
| ATT➣Access to Technologies |
| ATT➣Advanced Teaching Techniques |
| ATT➣Anti-Torpedo Torpedo |
| ATT➣Advanced Transportation Technologies |
| ATT➣Assign Terminal Type (US DoD) |
| ATT➣Antithrombotic Trialists' |
| ATT➣Agents in Traffic and Transportation (Workshop) |
| ATT➣Associated Talmud Torahs |
| ATT➣Army Training Test |
| ATT➣Advanced Theater Transport |
| ATT➣Athletic Therapy Today |
| ATT➣Anterior Tibial Translation |
| ATT➣Advanced Training Technologies |
| ATT➣Automatic Target Tracking |
| ATT➣Ammonia Tolerance Test |
| ATT➣American Top Tools |
| ATT➣Advanced Tree Technology (investment timber) |
| ATT➣Antitetanus Toxoid (vaccination) |
| ATT➣Advanced Transport Technology |
| ATT➣Attitude Retention System (aviation) |
| ATT➣Automatic Toll Ticketing |
| ATT➣Automatic Trunk Testing |
| ATT➣Aircraft Total Time (aviation inspection) |
| ATT➣Advanced Tank Technologies |
| ATT➣Alternative to Transplant (medicine) |
| ATT➣Aegis Test Team |
| ATT➣Armored Troop Transport |
| ATT➣All Thrust Termination |
| ATT➣Applied Transmission Technologies |
| ATT➣ASEAN Travel and Tours |
| ATT➣Automatic Trunk Test (system) |
| ATT➣Aerosol Transport Test |
| ATT➣Assembly Task Team |
| ATT➣Asynchronous Thread Termination |
| ATT➣Advanced Technologies and Travel |
| ATT➣Advanced Testing Technology |
| ATT➣Acoustic Target Tracker |
| ATT➣Automatic Turbine Testing |
| ATT➣Anaerobic Treatment Technology |
| ATT➣Automatic Tank Target |
| ATT➣Authorization to Tool |
| ATT➣Army Transformation Team |
| ATT➣Air Touch-Teletrac |
| ATT➣Advanced Tilting Train |