| Acronym | Definition |
|---|
| PGSS | Post-Graduate Students' Society (McGill University; Canada) |
| PGSS | Particles from Gas Saturated Solutions (chemistry) |
| PGSS | Persistent Ground Surveillance System (US DoD) |
| PGSS | Polish General Social Survey (1992-2002 study; University of Michigan; Inter-University Consortium for Political and Social Research) |
| PGSS | Pennsylvania Governor's School for the Sciences (summer school) |
| PGSS | Post Graduate Scholarship Scheme (Queensland Health; Queensland, Australia) |
| PGSS | Particulate/Gas Scrubber System |