ATG

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