POSC
| Acronym | Definition |
|---|---|
| POSC | Political Science (course) |
| POSC | Petrotechnical Open Software Corporation |
| POSC | Pet Orphans of Southern California (Van Nuys, CA) |
| POSC | Public Office Selection Committee (Australia) |
| POSC | Payroll Online Service Center (state of Maryland) |
| POSC | Personnel Occupational Specialty Code |
| POSC | Program of Study Committee (various locations) |