AAT or Aat may refer to:

Aviation

* Asia Airfreight Terminal, Hong Kong International Airport * Altay Airport, Xinjiang, China * Location identifier for Alturas Municipal Airport, California, United States

Biochemistry

Alpha 1-antitrypsin Alpha-1 antitrypsin or α1-antitrypsin (A1AT, α1AT, A1A, or AAT) is a protein belonging to the serpin superfamily. It is encoded in humans by the ''SERPINA1'' gene. A protease inhibitor, it is also known as alpha1–proteinase inhibitor (A1PI) ...

, also α1-antitrypsin (A1AT), a glycoprotein * Aspartate transaminase, or Aspartate Aminotransferase, an enzyme * AAT, a codon for the amino acid

Asparagine Asparagine (symbol Asn or N) is an α-amino acid that is used in the biosynthesis of proteins. It contains an α-amino group (which is in the protonated −NH form under biological conditions), an α-carboxylic acid group (which is in the depro ...

Places

Achanalt railway station , symbol_location = gb , symbol = rail , image = Achanalt Station - geograph.org.uk - 1451594.jpg , borough = Achanalt, Highland , country = Scotland , coordinates = , grid_name = Grid reference , grid_position = , manager = ScotRail ...

Ath Ath (; nl, Aat, ; pcd, Ât; wa, Ate) is a city and municipality of Wallonia located in the province of Hainaut, Belgium. The municipality consists of the following districts: Arbre, Ath, Bouvignies, Ghislenghien, Gibecq, Houtaing, Irc ...

, Belgium (Dutch: ) * Australian Antarctic Territory *

AutoAlliance Thailand AutoAlliance Thailand (AAT) is the name of a joint venture automobile assembly firm co-owned by Ford and Mazda in Rayong province, Thailand. Modeled after the Ford-Mazda AutoAlliance International joint venture in the United States, AAT builds ...

, a joint venture automobile manufacturing plant

Science

Anglo-Australian Telescope The Anglo-Australian Telescope (AAT) is a 3.9-metre equatorially mounted telescope operated by the Australian Astronomical Observatory and situated at the Siding Spring Observatory, Australia, at an altitude of a little over 1,100 m. In 20 ...

* Animal-assisted therapy *

Aquatic Ape Theory The aquatic ape hypothesis (AAH), also referred to as aquatic ape theory (AAT) or the waterside hypothesis of human evolution, postulates that the ancestors of modern humans took a divergent evolutionary pathway from the other great apes by becomi ...

, a theory in human evolution *

Ancient Astronauts Ancient astronauts (or ancient aliens) refers to a pseudoscientific hypothesis which holds that intelligent extraterrestrial beings visited Earth and made contact with humans in antiquity and prehistoric times. Proponents suggest that this ...

; or Ancient Astronaut Theory

Technology

Apple Advanced Typography Apple Advanced Typography (AAT) is Apple Inc.'s computer technology for advanced font rendering, supporting internationalization and complex features for typographers, a successor to Apple's little-used QuickDraw GX font technology of the mid-19 ...

, a font rendering technology

Other uses

* Aat (queen), an ancient Egyptian queen consort of the 12th dynasty * Administrative Appeals Tribunal, in Australia * And Another Thing (disambiguation) *

Art & Architecture Thesaurus The Art & Architecture Thesaurus (AAT) is a controlled vocabulary used for describing items of art, architecture, and material culture. The AAT contains generic terms, such as "cathedral," but no proper names, such as "Cathedral of Notre Dame." Th ...

, a controlled vocabulary used for describing items of art. * Arvanitika, a variety of Albanian spoken in Greece *

Association of Accounting Technicians The Association of Accounting Technicians (AAT) is the world’s leading professional body for Accounting Technicians, with over 150,000 members worldwide. AAT has 150,000 members according to official records from the Financial Reporting Counci ...

* The Bible, An American Translation *

Armored Assault Tank The following is a list of fictional ''Star Wars'' terrestrial vehicles, including armoured fighting vehicles, military aircraft, and naval ships. Vehicles appearing in the Original Trilogy All Terrain Armored Transport (AT-AT) The A ...