| Acronym | Definition |
|---|
| GCAS➣Ground Collision Avoidance System |
| GCAS➣GE (General Electric) Capital Aviation Services |
| GCAS➣Global Customer Assistance Service |
| GCAS➣Government Contractor Advisory Services (advisory firm) |
| GCAS➣Graduate Certificate in Applied Statistics (various organizations) |
| GCAS➣Gulf Centre for Aviation Studies (Abu Dhabi, United Arab Emirates) |
| GCAS➣Greater Cincinnati Aquarium Society |
| GCAS➣Gertrude Contemporary Art Spaces (Australia) |
| GCAS➣Guilford County Animal Shelter |
| GCAS➣General Conference Auditing Service |
| GCAS➣General Conference Auditing Service (Seventh-Day Adventist Church) |
| GCAS➣Graduate Certificate in Antarctic Studies |
| GCAS➣Gold Coast Aquarium Society (Australia) |
| GCAS➣Groupe Charles André Stockage (French storage company) |
| GCAS➣Greater City Aquarium Society |
| GCAS➣Global Code Allocation System |
| GCAS➣Grants and Contracts Accounting Services |
| GCAS➣Gloucester County Animal Shelter |
| GCAS➣Ground Alert Close Air Support |
| GCAS➣Genesee County Animal Shelter |
| GCAS➣Gibson County Animal Services |
| GCAS➣general channel allocation scheme |
| GCAS➣Girls Central Art School (Australia) |
| GCAS➣Government Common Application System (Hong Kong) |
| GCAS➣God's Country Astronomical Society |
| GCAS➣Gas Chromatograph Analyzer Server |
| GCAS➣Government Cost Accounting System, Inc. |
| GCAS➣God as Causal Agent Scale |
| GCAS➣Global Corporate Audit Services |
| GCAS➣General Computing and Software |
| GCAS➣Graduate Certificate Program in Applied Statistics |
| GCAS➣Grant County Archeological Society |
| GCAS➣General Cost Allocation System |
| GCAS➣General College and Arts and Sciences |
| GCAS➣Golden Cradle Adoption Services |
| GCAS➣Graduate Course of Academic Study |
| GCAS➣Great Canadian Artist Series |
| GCAS➣Goth Chick Appreciation Society |