| Acronym | Definition |
|---|
| HWCA➣Heads of Workers' Compensation Authorities (Australia) |
| HWCA➣Heads of Workers' Compensation |
| HWCA➣Hunter Wetlands Centre Australia (wetland ecosystem) |
| HWCA➣Hazardous Waste Control Act (California Environmental Program) |
| HWCA➣Heritage World Coin Auctions |