| PSEC | Pennsylvania Student Equality Coalition 
| Others |
| PSEC | Physical Science Engineering Center
| Others |
| PSEC | Physical Sciences Engineering Center
| Others |
| PSEC | Physical Sciences Enginering Center
| Others |
| PSEC | Power Systems Experience Center
| Others |
| PSEC | Prairie State Energy Campus
| Others |
| PSEC | Princeton Student Events Committee
| Others |
| PSEC | Process Systems Engineering Consortium
| Others |
| PSEC | Professional Staff Executive Committee
| Others |
| PSEC | Protection of Sexually Exploited Children
| Others |
| PSEC | Provably Secure Elliptic Curve
| Others |
| PSEC | Public Safety Enterprise Communication
| Others |
| PSEC | Public Safety Enterprise Communications
| Others |
| PSEC | Puget Sound Engineering Council
| Others |