| Acronym | Definition |
|---|
| PSSA | Pennsylvania System of School Assessment |
| PSSA | Pennsylvania System of State Assessments |
| PSSA | Program Static Storage Area |
| PSSA | Particularly Sensitive Sea Area |
| PSSA | Pharmaceutical Society of South Africa |
| PSSA | Pegasus Slowpitch Softball Association (Dallas, TX) |
| PSSA | Political Science Student Association |
| PSSA | Parasternal Short Axis |
| PSSA | Photographic Society of Southern Africa |
| PSSA | Preliminary System Safety Assessment |
| PSSA | Progressive Spiritualist Society of Austin (Texas) |
| PSSA | Political Science Students' Association |
| PSSA | Pennsylvania State Snowmobile Association |
| PSSA | Postsunset Service Authorization |
| PSSA | Phycological Society of Southern Africa |
| PSSA | Preliminary System Safety Analysis |
| PSSA | Premium Site Support Agreement (websites) |
| PSSA | Public Schools Sporting Association (Australia) |
| PSSA | Position Switched to Service Assistant |
| PSSA | Philosophy Society of South Africa |
| PSSA | Personnel Specialist Seaman Apprentice (USN Rating) |
| PSSA | Pharmacy Systems Service Analyst |
| PSSA | Pull Station Single Action (fire alarm component) |
| PSSA | Printed Square Slot Antenna |