| Acronym | Definition |
|---|
| PSPI | Product Sensitive Programming Interface |
| PSPI | Psychological Science in the Public Interest (publication; Association for Psychological Science) |
| PSPI | Photosensitive Polyimide |
| PSPI | Pusat Studi Properti Indonesia (Indonesian: Indonesian Property Studies Center; Jakarta, Indonesia) |
| PSPI | Population Services Pilipinas Incorporated (HIV/AIDS prevention; Philippines) |
| PSPI | Physique et Sciences Pour l'Ingénieur (French: Physical and Engineering Sciences; various universities) |
| PSPI | Progressive Supranuclear Palsy Information |
| PSPI | Period Schedule Performance Index |
| PSPI | Procurement Standard Practice Instructions |