| Abbreviation | Definition |
|---|---|
| PSO | Psychology Student Organization |
| PSPC | Political Science Program Council |
| PSPU | Penza State Pedagogical University |
| PSPU | Perm State Pedagogical University |
| PSS | Problem for Self Study |
| PSSA | Purdue Student Society of Arboriculture |
| PSSC | Park Student Success Center (Park University) |
| PSSC | Public Service Satellite Consortium (University of Maryland) |
| PSST | Philippino Students Stand Together |
| PSTU | Perm State Technical University |
| PSTU | Potti Sreeramulu Telugu University |
| PSU | Penn State University |
| PSU | Pittsburg State University |
| PSU | Plymouth State University |
| PSU | Polotsk State University |
| PSU | Portland State University |
| PSU | Prince Of Songkla University |
| PSU | Prince Sultan University |
| PSULC | Pangasinan State University Lingayen Campus |
| PSUT | Princess Sumaya University for Technology |