| GA&CS | Ground Acquisition and Command Station 
| Others |
| GACS | Gastroenterology Associates of Colorado Springs
| Others |
| GACS | General Assembly and Conference Services
| Others |
| GACS | Generic Atn Communication Service
| Others |
| GACS | Genesis Adaptive Control Suspension
| Others |
| GACS | Georgia Association of Christian Schools
| Others |
| GACS | Georgia Association of College Stores
| Others |
| GACS | Georgia Association of Convenience Stores
| Others |
| GACS | German American Cultural Society
| Others |
| GACS | Global Agricultural Concept Scheme
| Others |
| GACS | Global Automation Combustion Solution
| Others |
| GACS | Global Automotive Components and Suppliers
| Others |
| GACS | Global Automotive Consumer Study
| Others |
| GACS | Graduate Assistant Cost Share
| Others |
| GACS | Greater Atlanta Christian School
| Others |
| GACS | Greenwood Associates Clasification System
| Others |
| GACS | Guardian Angel Community Services
| Others |
| GACS | Guardian Angels Catholic School
| Others |