| Acronym | Definition |
|---|
| GAA | Goals Against Average (Hockey) |
| GAA | Gaelic Athletic Association |
| GAA | Glacial Acetic Acid |
| GAA | General Appropriation Act |
| GAA | Global Accounting Alliance (est. 2005) |
| GAA | Groupement des Assureurs Automobiles (French: Grouping of Motor Insurers; Canada) |
| GAA | Glacial Acrylic Acid |
| GAA | Global Aquaculture Advocate (St. Louis, MO) |
| GAA | Global Aquaculture Alliance |
| GAA | Greater Athens Area (Athens, Greece) |
| GAA | Generic Agent Architecture |
| GAA | Goals Allowed Average (sports statistic) |
| GAA | German Agro Action |
| GAA | Gravure Association of America (Rochester, NY) |
| GAA | Gay Activists Alliance |
| GAA | Global Asset Allocation (fund management) |
| GAA | Group Areas Act (South Africa) |
| GAA | Georgia Alternate Assessment |
| GAA | General Agency Agreement |
| GAA | Government Accountability Act |
| GAA | Goal Against Average (hockey) |
| GAA | Government Aid Agency (various locations) |
| GAA | Georgia Apartment Association (Atlanta, GA) |
| GAA | Glucosidase, Alpha, Acid |
| GAA | Guam Adventist Academy |
| GAA | Gastroenterology Administration Assembly (Medical Group Management Association) |
| GAA | General Average Agreement |
| GAA | Government Auditing Agency |
| GAA | General Account of Advances |
| GAA | Gainesville Apartment Association (Gainesville, FL) |
| GAA | Gateway Access Authorization |
| GAA | Grenfell Association of America |
| GAA | Global Action on Ageing |
| GAA | Gamers Addiction Anonymous |
| GAA | Galvanizers Association of Australia, Ltd. (Melbourne) |
| GAA | Glasgow Airport Authority (Scotland, UK) |
| GAA | Gain Adjuster Adapter |
| GAA | Greedy Approximation Algorithm |
| GAA | Ground Area Attainable |
| GAA | Government Affairs Assessment (Lighthouse Consulting Group) |
| GAA | Grease, Artillery, and Automotive |