AAT

AAT can mean:

• AAT, an aircraft manufacturer of the 1940s; see List of aircraft manufacturers A
• Achanalt railway station (rail code AAT)
• Altay Airport (IATA airport code: AAT) in Altay, Xinjiang, China
• Alturas Municipal Airport (IATA airport code: AAT) in Alturas, California, United States
• Anglo-Australian Telescope
• Apple Advanced Typography, a text imaging technology from Apple Computer
• Aquatic ape theory (aquatic ape hypothesis), a theory that very early hominids had a semi-aquatic phase
• Armoured Assault Tank, a fictional vehicle from Star Wars
• Association of Accounting Technicians
• Average access time, a measurement used with hard disks