The word at is an English word, which may act as a preposition.

AT (or similar) may also refer to:

Geography

Austria

• Austria (ISO 2-letter country code)
• .at, Internet country code top-level domain

United States

• Atchison County, Kansas (county code)
• Appalachian Trail, 2,000+ -mile mountainous trail in eastern United States

Elsewhere

• Anguilla (World Meteorological Organization country code)
• Ashmore and Cartier Islands (FIPS 10-4 territory code, and obsolete NATO country code)
• At, Bihar, village in Aurangabad district of Bihar, India
• Province of Asti, Italy (ISO 3166-2:IT code)

Science and technology

In computing

• @ (or "at sign"), the punctuation symbol now typically used in e-mail addresses (and more recently, tweets)
• at (command), a command used to schedule tasks or other commands to be performed or run at a certain time
• IBM Personal Computer/AT
  • AT form factor for motherboards and computer cases
  • A five-pin DIN connector for a keyboard
• Hayes command set for computer modems (each command begins with character-string "AT")

In biology and medicine

• Anaerobic threshold, in physiology
• Análisis transaccional (Spanish for "transactional analysis"), a psychological method
• Antithrombin, a small protein molecule that inactivates several enzymes of the coagulation system
• Ataxia telangiectasia, an immunodeficiency disorder
• Athletic Trainer

In physics and chemistry

• Astatine, a chemical element with symbol At
• Ampere-turn (symbol At), an International System of Units (MKS) unit of magnetomotive force
• Attotesla, 10^-18 tesla, an SI derived unit of magnetic flux density
• Technical atmosphere (symbol at), a physical unit of pressure

Other uses in science and technology

• Acceptance test, in engineering
• Appropriate technology, an ideological movement founded by economist Dr. Ernst Friedrich "Fritz" Schumacher
• Assistive technology, devices for people with disabilities
• Anti-tank weapon
• Automatic transmission, in vehicles

Other uses

• At, a subdivision equal to 1/100 of a Kip, the unit of currency in Laos
• Archive Team, a digital preservation group
• Aliança da Terra, a Brazilian non-governmental organization
• Aarne-Thompson classification system, used to classify folktales
• Aviation Electronics Technician, a rating in the United States Navy
• Auckland Transport, responsible for public transport in Auckland, New Zealand
• Royal Air Maroc (IATA airline designator)

See also

• All pages with titles beginning with at
• All pages with titles beginning with AT
• All pages with titles containing AT
• AT1 (disambiguation)
• ATS (disambiguation)

Disambiguation page providing links to topics that could be referred to by the same search term This disambiguation page lists articles associated with the title AT. If an internal link led you here, you may wish to change the link to point directly to the intended article.