| Term | Full Form | Category |
|---|---|---|
| PPSI | Partnerships in Prevention Science Institute | Others |
| PPSI | Patient perceived satisfactory improvement | Others |
| PPSI | Peaks to Plains Suzuki Institute | Others |
| PPSI | Personal Private and Sensitive Information | Others |
| PPSI | Pharmacy Planning Services Inc | Others |
| PPSI | Pioneer Power Solutions Inc | Others |
| PPSI | Program Profile and Services Inventory | Others |
| PPSI | Prototype Production Systems Inc | Others |