| PSPA | Pacific Seafood Processors Association 
| Others |
| PSPA | Parents of Students of Phillips Academy
| Others |
| PSPA | Past Service Pension Adjustment
| Others |
| PSPA | Pennsylvania School of the Performing Arts
| Others |
| PSPA | Pennsylvania School Press Association
| Others |
| PSPA | Pennsylvania Society of Physician Assistants
| Others |
| PSPA | Phage shock protein A
| Others |
| PSPA | Philadelphia Society for Promoting Agriculture
| Others |
| PSPA | Pneumococcal surface protein A
| Others |
| PSPA | Portable Seismic Pavement Analyzer
| Others |
| PSPA | Preferred Stock Purchase Agreement
| Others |
| PSPA | Pressure Static Probe Assembly
| Others |
| PSPA | Private Security Professionals of America
| Others |
| PSPA | Professional School Photographers of America
| Others |
| PSPA | Professional Services Procurement Act
| Others |
| PSPA | Professional Ski Patrol Association
| Others |