| Rank | Abbreviation | Meaning |
|---|
| ***** | GPCA | Generalized Principal Component Analysis
| |
| ***** | GPCA | Greater Pittsburgh Counseling Association
| |
| ***** | GPCA | Great Pyrenees Club of America
| |
| ***** | GPCA | Great Pyrenees Club of America's
| |
| ***** | GPCA | Gulf Petrochemicals & Chemicals Association
| |
| **** | GPCA | Great Pyrenees Club of American
| |
| **** | GPCA | Greater Philadelphia Cultural Alliance
| |
| **** | GPCA | Georgia Pest Control Association
| |
| *** | GPCA | General Purpose Communications Adapter
| |
| *** | GPCA | Georgia Police Chiefs Association
| |
| *** | GPCA | Goods and Products Contact
| |
| *** | GPCA | Gastric Parietal Cell Antibody
| |
| ** | GPCA | Georgia Plant Conservation Alliance
| |
| ** | GPCA | Great Plains Canola Association
| |
| ** | GPCA | German Pinscher Club of America
| |
| ** | GPCA | Generalised Principal Component Analysis
| |
| * | GPCA | Grand Prix Constructors Association
| |
| * | GPCA | General Purpose Computing Architectures
| |
| * | GPCA | Green Point Common Association
| |
| * | GPCA | Greater Patapsco Community Association
| |
| * | GPCA | Grande Prairie Construction Association
| |
| * | GPCA | Generalized Principle Component Analysis
| |
| * | GPCA | Gibraltar Point Centre for the Arts
| |
| * | GPCA | Goldsworth Park Community Association
| |
| * | GPCA | Georgia Public Communications Association
| |