AT may mean:
  • AT Field, a force field in the anime Neon Genesis Evangelion

  • Acceptance test

  • Aero triangulation

  • Alimentary tract

  • Allied Telesyn

  • Atmel Corporation

  • Anaerobic threshold

  • ''Análisis Transaccional'' (Spanish "Transactional analysis"), a psychological method

  • Anguilla, a World Meteorological Organization country code

  • Anti-tank weapons

  • Counter-terrorism, also known as "anti-terrorism" (AT)

  • Appalachian Trail

  • Aphex Twin

  • Appropriate Technology

  • Ashmore and Cartier Islands (FIPS 10-4 territory code and obsolete NATO country code

  • Assistive technology

  • IBM Personal Computer/AT

  • AT form factor for motherboards and computer cases

  • The common name for the 5-pin DIN keyboard connector

  • Ataxia telangiectasia, an immunodeficiency disorder

  • Atchison County, Kansas (county code)

  • Attack Team (game), a 2000 computer game

  • Audit trail

  • Austria's ISO, 2-letter country code

  • .at is the Internet country code top-level domain for Austria

  • Auto Trend

  • Automatic transmission

  • Aviation Electronics Technician (United States Navy ratings), an enlisted rating in the United States Navy

  • Hayes command set for computer modems (all commands begin with the characters "AT")

  • Royal Air Maroc (IATA airline designator)

  • Abel Tasman, a seventeenth century Dutch explorer and merchant


    • At may mean:
  • Ampere-turn (symbol), an International System of Units (MKS) unit of magneto-motive force

  • Astatine, the chemical symbol for the element

  • a subdivision equal to 1/100 of a Kip, the unit of currency in Laos


    • aT may mean:
  • attotesla, an SI unit of magnetic flux density


    • at may mean:
  • "@", the punctuation symbol now typically used in e-mail addresses

  • at (Unix command), to schedule tasks to be performed at a later date

  • technical atmosphere (symbol), physical unit of pressure


    • cs:AT
    de:AT
    el:AT
    es:AT
    eo:At
    fr:AT
    gl:AT
    ko:AT
    it:AT
    lt:AT
    nl:AT
    ja:AT
    no:AT
    pl:At
    pt:AT
    ksh:AT (Watt ėßß datt?)
    sk:At
    fi:At
    sv:AT
    zh:AT