| Acronym | Definition |
|---|
| GCA | Gaming Control Act |
| GCA | Gas Cost Adjustment |
| GCA | General Commercial Availability |
| GCA | General Customs Administration (China) |
| GCA | Generator Coordinate Approximation |
| GCA | Geophysical Corporation of America (defunct manufacturing company) |
| GCA | Global Coalition for Africa |
| GCA | GNOPP Constrained Assets |
| GCA | Government Contracting Activity |
| GCA | Government Controlled Area |
| GCA | Greek Cypriot Administration |
| GCA | Ground Control Airborne |
| GCA | Ground Control Apparatus |
| GCA | Ground Controlled Approach |
| GCA | Guidance and Control Assembly |
| GCA | Guidance Counselor Application (ARISS) |
| GCA | Gun Control Act of 1968 |