| Acronym | Definition |
|---|
| PspA | Pneumococcal Surface Protein A |
| PspA | Public Safety Preservation Act |
| PspA | Professional School Photographers Association |
| PspA | Past Service Pension Adjustment |
| PspA | Political Science and Public Administration |
| PspA | Pacific Seafood Processors Association |
| PspA | Pennsylvania Society of Physician Assistants |
| PspA | Pennsylvania Society of Public Accountants |
| PspA | Pennsylvania School Press Association |
| PspA | Portable Seismic Pavement Analyzer |
| PspA | Professional Ski Patrol Association |
| PspA | Preferred Stock Purchase Agreement |
| PspA | Photoluminescent Safety Products Association |
| PspA | Political Studies and Public Administration |
| PspA | Peace Support Psychological Activities |
| PspA | Professional School Photographers of America |
| PspA | Physician Services Practice Analysis |
| PspA | Professional Services Procurement Act |
| PspA | Pingry School Parents' Association (Martinsville, NJ) |
| PspA | Palm Springs Pilots Association (Springs, California) |
| PspA | Pressure Static Probe Assembly |
| PspA | Philippine Society for Public Administration |
| PspA | Panti Sosial Petirahan Anak |
| PspA | Parents of Students of Phillips Academy |
| PspA | Private School Principals Academy |
| PspA | Press Service Photo Agency |
| PspA | Petroleum and Submarine Pipelines Act (UK) |
| PspA | Puget Sound Physicians Association |
| PspA | Past Service Pension Adjusted |
| PspA | Passive Solar Products Association |
| PspA | Program Standards Project Authority |
| PspA | Phantom Sleep Page Apnea |
| PspA | Prevention System for Platform Accidents |
| PspA | Public Service Pensioner Association |
| PspA | Performance Solution Performance Advisor |
| PspA | Piramatiko Scholio Panepistimioy Athinon (Experimental School of the University of Athens; Greece) |
| PspA | Placed in Service Prior to Arrival |