| AAT | Able Applied Technologies 
| Others |
| AAT | Academy of Agriculture of Turin
| Others |
| AAT | Accademia di Agricoltura di Torino
| Others |
| AAT | achen Aphasia Test
| Others |
| AAT | Action Automobile et Touristique
| Others |
| AAT | Activities As Tolerated
| Others |
| AAT | Activity As Tolerated
| Others |
| AAT | Administrative Appeals Tribunal
| Others |
| AAT | Advanced Additive Technology
| Others |
| AAT | Advanced Allergy Therapeutics
| Others |
| AAT | Advanced Analytical Technologies
| Others |
| AAT | Advanced Armament Technology
| Others |
| AAT | Advanced Automotive Technologies
| Others |
| AAT | Advanced Automotive Training
| Others |
| AAT | Advances in Alzheimer Therapy
| Others |
| AAT | African animal trypanosomosis
| Others |
| AAT | Alamo Alternative Transportation
| Others |
| AAT | Alignment Assignment and Technique
| Others |
| AAT | All Automatic Transmission
| Others |
| AAT | Alpha-1 antitrypsin
| Others |
| AAT | Alpha1-AntiTrypsin
| Others |
| AAT | Altay, Mainland China
| Others |
| AAT | Ambient Air Temperature
| Others |
| AAT | America's Army Training
| Others |
| AAT | America's Automotive Trust
| Others |
| AAT | American Accent Training
| Others |
| AAT | American Assets Trust
| Others |
| AAT | American Association of Teachers
| Others |
| AAT | Anglo Australian Telescope
| Others |
| AAT | Animal Assisted Therapy
| Others |
| AAT | Animal- Assisted Therapy
| Others |
| AAT | Antonov Automotive Technologies
| Others |
| AAT | Apple Advanced Typography
| Others |
| AAT | Application Assembly Tool
| Others |
| AAT | Aquatic Ape Theory
| Others |
| AAT | Arc Attribute Table
| Others |
| AAT | Architecture Aptitude Test
| Others |
| AAT | Armored Assault Tank
| Others |
| AAT | Art And Architecture Thesaurus
| Others |
| AAT | Art Architecture Thesaurus
| Others |
| AAT | Asia Airfreight Terminal
| Others |
| AAT | Associate of Arts in Teaching
| Others |
| AAT | Associates of Arts in Teaching
| Others |
| AAT | Association of Accounting Technicians
| Others |
| AAT | At All Times
| Others |
| AAT | Austin American Technology
| Others |
| AAT | Australian Amalgamated Terminals
| Others |
| AAT | Australian Antarctic Territory
| Others |
| AAT | Australian Automotive Terminals
| Others |
| AAT | Auto Alliance Thailand
| Others |
| AAT | Automatic Analog Test
| Others |
| AAT | Automatic Analog Tester
| Others |
| AAT | Automobile Association of Tanzania
| Others |
| AAT | Automotive Applied Technologies
| Others |
| AAT | Average Access Time
| Others |
| AAT | Aviation Advisory Team
| Others |
| AAT | Aviation Applied Technology
| Others |
| AAT | The Alliance Against Trolls
| Others |