| Acronym | Definition |
|---|
| GPCA➣Green Party of California (est. 1985) |
| GPCA➣Great Pyrenees Club of America |
| GPCA➣Generalized Principal Component Analysis |
| GPCA➣Greater Philadelphia Cultural Alliance (est. 1972; Pennsylvania) |
| GPCA➣General Purpose California (est. 2015) |
| GPCA➣Gulf Petrochemicals & Chemicals Association (Dubai, UAE) |
| GPCA➣Greater Patapsco Community Association (Maryland) |
| GPCA➣Georgia Plant Conservation Alliance |
| GPCA➣Gastric Parietal Cell Antibody |