| Acronym | Definition |
|---|
| GAC | Great American Country |
| GAC | Global Assembly Cache (Microsoft .NET) |
| GAC | Global Assembly Cache |
| GAC | Granular Activated Carbon |
| GAC | Gustavus Adolphus College (St. Peter, Minnesota) |
| GAC | Government Advisory Committee |
| GAC | General Aviation Commission |
| GAC | Geological Association of Canada |
| GAC | Government Affairs Committee |
| GAC | General Assembly Council |
| GAC | Governmental Affairs Committee |
| GAC | Global Area Coverage |
| GAC | General Affairs Council (EU) |
| GAC | GCRC Advisory Committee (Penn State) |
| GAC | Grants and Contracts |
| GAC | Get A Clue |
| GAC | General Advisory Committee |
| GAC | Graduate Affairs Committee |
| GAC | Group Access Capability |
| GAC | Government Affairs Conference |
| GAC | Guilty As Charged (band) |
| GAC | Galvanized Aircraft Cable |
| GAC | Generalized Arc-Consistency |
| GAC | Graphic Adventure Creator |
| GAC | Generic Artificial Consciousness |
| GAC | Guidance and Control |
| GAC | Gemini Air Cargo |
| GAC | Global Afrikan Congress |
| GAC | Ground Assault Convoy |
| GAC | Governor's Advisory Council |
| GAC | Graphic Arts Center |
| GAC | General American Corporation (real estate vendor management provider) |
| GAC | Geospatial Advisory Committee |
| GAC | Greenbelt Arts Center (Greenbelt, MD, USA) |
| GAC | Guelph Arts Council |
| GAC | GIS Application Center |
| GAC | Grumman Aerospace Corporation |
| GAC | Georgia Agribusiness Council |
| GAC | Global Asbestos Congress |
| GAC | Global Avalanche Characteristics |
| GAC | Greek Alliance Council |
| GAC | Graduate Academic Certificate |
| GAC | Greater Alabama Council (Boy Scouts of America) |
| GAC | General Artificial Consciousness |
| GAC | Greyhound Adoption Center |
| GAC | Gospel Assembly Church |
| GAC | Geometrie Algebrique Complexe |
| GAC | General Avionics Computer |
| GAC | Global Atmospheric Chemistry Group |
| GAC | Grilled American Cheese (sandwich) |
| GAC | Gloster Aircraft Company |
| GAC | Geriatric Assessment Clinic |
| GAC | Graphs and Combinatorics |
| GAC | Graduate Admission Committee |
| GAC | General Analytics Corporation |
| GAC | Goodyear Atomic Corporation |
| GAC | Groundwater Activated Carbon |
| GAC | Gorkha Ayurved Company (Nepal) |
| GAC | Gloucester Arts Council |
| GAC | Golder Associates Corporation |
| GAC | Grangeville Air Center (Us Forest Service Smokejumper Base in Northern Idaho) |
| GAC | Gamblin Artists Colors Co. |
| GAC | General Application Controls (information technology auditing) |
| GAC | Graphical Activity Client |
| GAC | General Acoustic Conditions |
| GAC | Global Avalanche Criterion |
| GAC | Geological Advisory Committee (North Carolina Geological Survey) |
| GAC | Government and Anti-Corruption (Diagnostics Tools) |
| GAC | Global Assessment of Change (score used in clinical studies medical) |
| GAC | Grammar Applicative and Cognitive (model) |
| GAC | Goods At Consolidator |
| GAC | Girls' Action Council |
| GAC | Gravesham Arts Council (UK) |
| GAC | Generale Accessoires Chauffage |
| GAC | Gresham Art Committee (Gresham, OR) |