AAT or Aat may refer to:
Accounting
edit- The Association of Accounting Technicians, a professional member body
Aviation
edit- Asia Airfreight Terminal, Hong Kong International Airport
- Altay Airport, Xinjiang, China
- Location identifier for Alturas Municipal Airport, California, United States
Biochemistry
edit- Alpha 1-antitrypsin, also α1-antitrypsin (A1AT), a glycoprotein
- Aspartate transaminase, or Aspartate Aminotransferase, an enzyme
- AAT, a codon for the amino acid Asparagine
Places
edit- Achanalt railway station
- Ath, Belgium (Dutch: Aat)
- Australian Antarctic Territory
- AutoAlliance Thailand, a joint venture automobile manufacturing plant
Science
edit- Anglo-Australian Telescope
- Animal-assisted therapy
- Aquatic Ape Theory, a theory in human evolution
- Ancient Astronauts; or Ancient Astronaut Theory
Technology
edit- Apple Advanced Typography, a font rendering technology
Other uses
edit- Aat (queen), an ancient Egyptian queen consort of the 12th dynasty
- Administrative Appeals Tribunal, in Australia
- And Another Thing (disambiguation)
- Art & Architecture Thesaurus, a controlled vocabulary used for describing items of art.
- Arvanitika, a variety of Albanian spoken in Greece
- The Bible, An American Translation
- Armored Assault Tank, a Separatist tank in the prequel era of the Star Wars universe
- Hong Kong Academic Aptitude Test, a standardized examination from 1978 to 2000