ATG may refer to:

Companies

  • ATG Stores, an e-tail site
  • Advanced Technology Group (Apple), a former division of Apple Computer
  • Advanced Technology Group (Novell), a former division of Novell
  • Aviation Technology Group, the defunct developer of the Javelin Very Light Jet (VLJ)
  • Auction Technology Group, a digital marketplace company formerly known as ATG Media

Military

  • Alaska Territorial Guard, a military reserve force in World War II
  • Anti-tank gun, a mobile weapon used in Anti-tank warfare

Organizations

  • Alternative Tourism Group, a Palestinian NGO
  • Ambassador Theatre Group, a theatre group in the UK

Science

  • ATG, a three-base sequence of DNA in the genetic code representing a start codon and/or methionine
  • Anti-thymocyte globulin, antibodies to prevent and treat transplant rejection
  • ATG is short for "autophagy-related", which can apply to either genes or proteins

Other uses

  • Ankara Tren Garı, a mixed use building in Ankara, Turkey
  • Anti Tank Guitar, a string instrument
  • Art Technology Group, a software developer
  • Art Theatre Guild, a Japanese film production company
  • Auto-gating, in night vision devices
  • The ISO 3166 code for Antigua and Barbuda, a country in the east Caribbean Sea