| Acronym | Definition |
|---|
| AGA | American Gas Association |
| AGA | Association of Government Accountants |
| AGA | American Go Association |
| AGA | American Gaming Association (Washington, DC) |
| AGA | American Gastroenterological Association |
| AGA | Arizona Golf Association |
| AGA | Androgenetic Alopecia |
| AGA | Appropriate for Gestational Age |
| AGA | Annual General Assembly |
| AGA | Accredited Gemologists Association |
| AGA | American Galvanizers Association |
| AGA | American Grassfed Association |
| AGA | Australian Gas Association |
| AGA | Aquatic Gardeners Association |
| AGA | Administracion General de Aduanas (Mexico) |
| AGA | Aspartylglucosaminidase |
| AGA | American Gelbvieh Association |
| AGA | Archivo General de la Administración (Spain) |
| AGA | Aspartylglucosaminuria |
| AGA | Allgemeine Grundausbildung (German Army basic military training) |
| AGA | Advanced Graphics Adapter |
| AGA | American Genetic Association |
| AGA | Arbeitsgemeinschaft Afghanistan |
| AGA | Academia de Guerra Aérea |
| AGA | American Grandprix Association |
| AGA | Australasian Golf Academy |
| AGA | Australian Government Actuary |
| AGA | American Gymnastics Association |
| AGA | Alabama Golf Association |
| AGA | Asociación Geológica Argentina |
| AGA | Alcohol and Gaming Authority (Canada) |
| AGA | Aruba Gastronomic Association |
| AGA | Average for Gestational Age |
| AGA | Art Glass Association |
| AGA | alt.guitar.amps (newsgroup) |
| AGA | Academia General del Aire (Spain's Air Force Academy) |
| AGA | Agadir, Morocco - Inezgane (Airport Code) |
| AGA | Alberta Golf Association |
| AGA | American Guernsey Association |
| AGA | Advanced Graphic Architecture (Amiga chip set) |
| AGA | Animal Guardians of America |
| AGA | Asociación de Diseñadores Gráficos de Asturias |
| AGA | Albanian Guarantee Agency |
| AGA | American Guild of Appraisers |
| AGA | Asociación Guías Argentinas (Spanish) |
| AGA | Asociación de Germanistas de Andalucía |
| AGA | Asociación Guatemalteca de Astronomía (Spanish: Guatemala Astronomical Association) |
| AGA | Asociación Guías de Aragón |
| AGA | Arbeitsgemeinschaft Autorinnen |
| AGA | Annual General Adjustment |
| AGA | Albert-Garaudy and Associates, Inc. |
| AGA | Association Genevoise d'Athlétisme |
| AGA | Anthracite Golf Association |
| AGA | Asociación General de Agricultores (General Association of Agriculturists, Guatemala) |
| AGA | Arkansas Geographic Alliance |
| AGA | Aerodrome and Ground Aids |
| AGA | Albert Grover & Associates |
| AGA | Aktiengesellschaft Für Automobilbau |
| AGA | Amateur Golfers Association |
| AGA | Aberdeen Geological Alumni |
| AGA | Anarchist Golfing Association |
| AGA | Apple Grain Aphid |
| AGA | Arab Geologists' Association |
| AGA | Autonomous Government Agency |
| AGA | Associação Guaporense de Automobilismo |
| AGA | Automatic Gas Analyzer |
| AGA | Australian Glass Assemblies |
| AGA | Adenin-Guanin-Adenin (genetics) |
| AGA | Action Gardoise Aquariophile |
| AGA | Alvin Guggenheim & Associates |
| AGA | Australian Galloway Association Inc. |
| AGA | Arizona Gazehound Association |
| AGA | American Gas Accumulator Company |
| AGA | Ascension Ground Antenna |
| AGA | Anne Ginther and Associates |
| AGA | Ashland Graphic Arts, Inc. |
| AGA | Asociación Guatemalteca de Aeromodelismo (Guatemalan Association of Aeromodelling) |
| AgA | Aktionsgemeinschaft Artenschutz eV |
| AGA | Associate Government Agency |
| AGA | Angel Gate Academy |
| AGA | Army Game Administrator (gaming) |
| AGA | Academy Graduate Association |
| AGA | Aktiebolaget Gasacculumator (German) |
| AGA | Atlanta Graphic Arts Inc. |
| AGA | Arbitrary-Geometry Antenna |
| AGA | Air-To-Ground-To-Air |
| AGA | Anglo Gold Ashanti (South Africa) |
| AGA | Austin Green Art (Austin, TX) |