- AAT stands for Association of Accounting Technicians
- AAT stands for Administrative Appeals Tribunal
- AAT stands for Animal-Assisted Therapy
- AAT stands for Alpha-1-Antitrypsin
- AAT stands for Accelerated Aging Test
- AAT stands for Anglo Australian Telescope (Anglo-Australian Observatory, Sliding Spring, Australia)
- AAT stands for Adopt-a-Teacher (various schools)
- AAT stands for Australian Antarctic Territory
- AAT stands for Art & Architecture Thesaurus (Getty)
- AAT stands for Alanine Aminotransferase
- AAT stands for Aquatic Ape Theory (paleoanthrological hypothesis: aka AAH)
- AAT stands for Armored Assault Tank (Star Wars)
- AAT stands for Average Access Time
- AAT stands for AutoAlliance Thailand
- AAT stands for Associated Actors and Technicians (Weber State University; Ogden, UT)
- AAT stands for And Another Thing
- AAT stands for Ambient Air Temperature
- AAT stands for American Accent Training
- AAT stands for Airports Authority of Thailand
- AAT stands for Associate in Arts in Teaching
- AAT stands for Armored Attack Tank (Star Wars)
- AAT stands for African Animal Trypanosomiasis
- AAT stands for Action on Alcohol and Teens
- AAT stands for Advanced Antenna Technology
- AAT stands for Advanced Algebra Trigonometry
- AAT stands for Allo Anjou Taxi (French taxi service)
- AAT stands for Average Annual Temperature (climate statistic)
- AAT stands for Activity As Tolerated (medical)
- AAT stands for Automatic Atrial Tachycardia
- AAT stands for Atomic Axial Tensor
- AAT stands for Achievement and Attainment Table
- AAT stands for Asbestos Awareness Training
- AAT stands for Army Assault Team
- AAT stands for Avis d’Arrêt de Travail (French: Stop Work Notice)
- AAT stands for Aviation Advisory Team
- AAT stands for Aviation Applied Technology
- AAT stands for Anti-Aircraft Turret
- AAT stands for Animal-Aided-Therapy
- AAT stands for Architecture Analysis Tool
- AAT stands for Availability Analysis Tool
- AAT stands for Automatic Analog Tester
- AAT stands for ATO/ACO Tool
- AAT stands for Advanced Analytic Tools
- AAT stands for Advanced Armament Technology
- AAT stands for Approach Avoidance Theory
- AAT stands for Allowed Alternative Treatment (Singapore)
- AAT stands for Acceptability Advisory Team
- AAT stands for Anomaly Analysis Team
- AAT stands for Australian Accommodated Tours
- AAT stands for Asbestos Abatement Team
- AAT stands for Address Allocation Table
- AAT stands for Alliance Against Terrorism
- AAT stands for Advanced ATM Technology (Sprint)
- AAT stands for Advanced Audit Technique
- AAT stands for Aseite Austria Tischler
- AAT stands for AWSIM (Air Warfare Simulation Model) Analysis Tool (US DoD)
- AAT stands for Azur Affrètement Transports (French transportation company)
AAT