| Abbreviation | Definition |
|---|---|
| PSA | Peel Summer Academy |
| PSA | Philippine Student Association |
| PSA | Potential Student Athlete |
| PSA | Puntland Students Association |
| PSAT | Preliminary Scholastic Aptitude Test (former name) |
| PSAU | Pampanga State Agricultural University |
| PSAU | Prince Sattam bin Abdulaziz University |
| PSB | Pickering School Of Ballet |
| PSC | Pioneer Student Center |
| PSC | Project Steering Committee |
| PSCC | President's Sustainable Campus Committee (Cornell) |
| PSCC | Professional and Student Chapters Committee |
| PSDM | Problem Solving and Decision Making |
| PSDU | Penn State denotes universality: |
| PSE | Pennsylvania State University, Erie |
| PSE | Physics For Scientists And Engineers |
| PSE | Pre Study Environment |
| PSE | Problem Solving Environment |
| PSGV | Penn State Great Valley |
| PSH | Pennsylvania State University, Hazleton |