| Acronym | Definition |
|---|
| AGS | American Gem Society |
| AGS | American Geriatrics Society |
| AGS | Armadyl Godsword (gaming) |
| AGS | Alliance Ground Surveillance (NATO) |
| AGS | Alpha Gamma Sigma (scholastic honor society) |
| AGS | Alliance for Global Sustainability |
| AGS | Australian Geomechanics Society |
| AGS | Alpine Garden Society |
| AGS | American Geographical Society |
| AGS | Associated Global Systems (New Hyde Park, NY) |
| AGS | Adventure Game Studio |
| AGS | Alternating Gradient Synchrotron |
| AGS | Associate of General Studies |
| AGS | Survey Ship (US Navy ship designation) |
| AGS | Australian Government Solicitor |
| AGS | Americans for Gun Safety |
| AGS | American Gerbil Society |
| AGS | Armored Gun System |
| AGS | Association for Gravestone Studies (founded in 1977) |
| AGS | American Gemological Society |
| AGS | American Goat Society (Broad Run, VA) |
| AGS | Applied Geographic Solutions |
| AGS | American Glaucoma Society |
| AGS | Auckland Grammar School (New Zealand) |
| AGS | Any Given Sunday (movie) |
| AGS | Atlantic Geoscience Society |
| AGS | American Ghost Society |
| AGS | American Guidance Service, Inc. |
| AGS | Aylesbury Grammar School |
| AGS | Association of Geotechnical and Geoenvironmental Specialists |
| AGS | Alberta Genealogical Society |
| AGS | Aviation Ground Support |
| AGS | Aicardi Goutières Syndrome |
| AGS | American Gourd Society |
| AGS | Arkansas Governor's School |
| AGS | Abort Guidance System |
| AGS | American Glovebox Society |
| AGS | Automated Graphic Systems, Inc. (White Plains, Maryland) |
| AGS | Army General Staff |
| AGS | Annualized Geo-Solar (heating technique, construction) |
| AGS | Automobiles Gonfaronnaises Sportives (French Formula 1 Team) |
| AGS | American Guitar Society |
| AGS | Allegis Group Services |
| AGS | Alaska Ground Station |
| AGS | Association Genevoise des Sports |
| AGS | Austin Genealogical Society |
| AGS | Anti Graffiti-Systeme |
| AGS | Augusta, GA, USA - Bush Field (Airport Code) |
| AGS | Architectural Graphics Standards |
| AGS | Advanced Grading Specialists |
| AGS | Alabama Great Southern Railroad Company |
| AGS | Administração e Gestão de Sistemas de Salubridade (Portugese: Management of Salubrity Systems) |
| AGS | Adler Graduate School |
| AGS | American Grounding Systems |
| AGS | Apostoliese Geloofsending (Apostolic Faith Mission, South Africa) |
| AGS | Adolescent Guidance Services |
| AGS | Adventure Game Studios |
| AGS | Alternating Gradient Synchroton |
| AGS | Antarctic Geodesy Symposium |
| AGS | American Guide Services, Inc. |
| AGS | Atelier Graphique Saunière (French graphics workshop) |
| AGS | Anti-G Suit |
| AGS | Aegis Corporation |
| AGS | Analytical Gas Systems |
| AGS | Academy of Gandhian Studies (Tirupati, India) |
| AGS | Advanced Geosynchronous Studies |
| AGS | Armor Grip Suspension |
| AGS | Annulus Gas System |
| AGS | Art Galleries in Switzerland |
| AGS | Authentic Gaming Supply (Rochester, NY) |
| AGS | Anthony Gell School (UK) |
| AGS | Amboy Generator Service (Cliffwood, NJ, USA) |
| AGS | Agency Grievance System |
| AGS | Asynchronous Gateway Server |
| AGS | Ascent Guidance Subframe |
| AGS | Arizona Gourd Society |
| AGS | Amplonius-Gymnasium Rheinberg (Germany) |
| AGS | Arizona Geological Society, Inc. |
| AGS | Association of General Clinical Research Center Statisticians |
| AGS | Anti-Gravity Suit |
| AGS | Advanced Gigabit Satellite (NEC) |
| AGS | Auxiliary General Survey |
| AGS | Australian Golf Schools |
| AGS | Advanced Gunnery System |
| AGS | American Gourmet Secret |
| AGS | Altus Ground Station |
| AGS | Agency of Global Security |
| AGS | Aviation Golf Services |
| AGS | Ambiguity Group Size |
| AGS | Associated Graduate Studies |
| AGS | Airborne Gamma Spectroscopy |
| AGS | Amara Global Services |
| AGS | Airport Ground Service Ltd |
| AGS | Avtomaticheskiy Granatomet Stankouyy (Russian automatic grenade launcher) |
| AGS | Alaska General Seafoods |
| AGS | Adtech Global Solutions (Alpharetta, GA) |
| AGS | Advanced Graphics Software (various locations) |
| AGS | Air Guard Station (US military) |
| AGS | Adult and Graduate Studies |
| AGS | Agricultural Support Systems Division |
| AGS | Airborne Gravity System |
| AGS | Active Global Support (SAP) |
| AGS | Above Ground Surface (measurement above ground surface) |
| AGS | Advanced Gun System |
| AGS | Advanced Guidance System |
| AGS | Administrator of General Services |
| AGS | Aircraft Generation Squadron |
| AGS | Alaska Geographic Society |
| AGS | Andrea Griffin Stewart (poet) |
| Ags | Aguascalientes (Mexican state) |
| AGS | Airborne Ground Surveillance (NATO) |
| AGS | Analysis Ground Station (Sagem) |
| AGS | Aggressive Growth Strategy |
| AGS | Auditor General for Scotland (UK) |
| AGS | Adobe Graphics Server |
| AGS | Alagille Syndrome |
| AGS | Accounting and General Services (Hawaii) |
| AGS | Army Group South (gaming; Australia) |