| Acronym | Definition |
|---|
| AGO | Art Gallery of Ontario |
| AGO | Attorney General's Office (State of Washington) |
| AGO | Angola (ISO Country code) |
| AGO | American Guild of Organists |
| AGO | Australian Greenhouse Office |
| AGO | Assembléia Geral Ordinária (Ordinary General Meeting; Brazil) |
| AGO | Adjutant General's Office (USA) |
| AGO | Attorney General Opinion |
| AGO | Assicurazione Generale Obbligatoria (Italian: Mandatory General Insurance) |
| AGO | Acquisition and Grants Office (US NOAA) |
| AGO | Richard Gilder Graduate School (American Museum of Natural History; New York) |
| AGO | Australian Geospatial-Intelligence Organisation (Australia) |
| AGO | Air Ground Operations |
| AGO | Alpha Gamma Omega (Christian fraternity) |
| AGO | Automotive Gas Oil |
| AGO | Agenzia Giornalistica Online (Italian: Journalistic Agency Online) |
| AGO | Aims, Goals, Objectives (education) |
| AGO | Armygeddon (gaming clan) |
| AGO | Accumulated Generating Operation |
| AGO | Arresting Gear Officer (US Navy) |
| AGO | Automated Geophysical Observatory |
| AGO | Arbeitsgemeinschaft Gynäkologische Onkologie eV (Munich, Germany) |
| AGO | Administrative Grant Officer |
| AGO | Arresting Gear Operator |
| AGO | American Gastroenterological Organization |
| AGO | Santiago, Chile STDN Station |
| AGO | Audit et Gestion Opérationnels (French: Audit and Operational Management; University of Lyon) |
| AGO | Alpine Grand Ouest (French automobile association) |