AGS may refer to:
- AGS, three-letter code for Augusta Regional Airport in Augusta, Georgia, USA
- AGS, The National Rail code for Argyle Street railway station, United Kingdom
- Adventure Game Studio, software for creating point-and-click adventure games
- AGS, the product code for Nintendo's Game Boy Advance SP
- Cisco AGS, a network router model popular in the early 1980s
- Alternating Gradient Synchrotron, a particle accelerator located in the USA
- AGS, (Annualized Geothermal Solar) heating, combining passive solar and geothermal heating techniques
- AGS, ESRI ArcGIS Server
- AGS, the Abort Guidance System of the Apollo spacecraft
Military:
- AGS, United States Air Force Aircraft Generation Squadron
- AGS, the US Navy hull classification symbol for Surveying Ship
- Advanced Gun System
- M8-AGS, the M8 Armored Gun System
- AGS-17, the Soviet-designed automatic grenade launcher
- AGS-30, successor of AGS-17
- Airborne Ground Surveillance a class of military airborne radar system used for detecting and tracking ground targets, such as vehicles and slow moving helicopters.
- Alliance Ground Surveillance a NATO programme to acquire an Airborne Ground Surveillance capability
Biology:
- Antigens (Ags), targets of immune response
Chemistry:
- Ag2S, Silver sulfide
Organizations, societies, companies:
- Adventure Game Studio
- Alabama Great Southern Railroad
- Alberta Geological Survey
- Alliance for Green Socialism, a political party in Britain
- Alpha Gamma Sigma, an honor society in California
- American Gem Society
- American Geographical Society
- American Gerbil Society, the pedigree gerbil breeding organization in the United States
- American Geriatrics Society
- American Gita Society, see International Gita Society
- Americans For Gun Safety Foundation
- An Garda Síochána, the national police of the Republic of Ireland
- Association of Geotechnical and Geoenvironmental Specialists
- Australian Government Solicitor
- Automobiles Gonfaronnaises Sportives, a defunct Formula 1 team
Educational institutions:
- Aberdeen Grammar School
- Adams' Grammar School
- Aireborough Grammar School
- Airline Ground Schools
- Alcester Grammar School
- Allan Glen's School
- Alliance Graduate School
- American Graduate School in Paris
- American Graduate School of International Relations and Diplomacy
- Antonio Gonzalez Suarez Regional Bilingual Elementary School
- Antrim Grammar School
- Arkansas Governor's School
- Auckland Grammar School
- Aylesbury Grammar School
Medical terms:
- Adrenogenital syndrome
- Aicardi–Goutières syndrome, a rare genetic disorder
- Alagille syndrome, a multisystem disorder involving primarily the liver, heart, eyes, face, and skeleton
Place
- Aguascalientes, Mexican state
Other
- Ag is also used in short form for the term Aggies
- Anj Ganj Salanj (Also known as 'Skanj Ganj')