| Professional Internships for PhD Students | Academic & Science |
| Private Investment Profit System | Business |
| Planting in Primary Schools | Community |
| Performance in Primary Schools | Community |
| Performance Indicators in Primary Schools | Community |
| Passive Input Panel System | Computing |
| Parallel Information Processing System | Computing |
| Pre-Incident Planning System | Computing |
| Passivated Implanted Planar Silicon | General |
| Practice Inspection and Practice Standards | General |
| Photon Induced Photoacoustic Streaming | General |
| Parents Informing Parents Supporting | General |
| Program in Placebo Studies | General |
| Photo Image Printing System | General |
| Personnel Investigations Processing System | General |
| Postsecondary Instructional Practices Survey | General |
| Performance Improvement and Patient Safety | General |
| Public Interest Public Service | General |
| Polar Ice Prediction System | General |
| Photon Induces Photoacoustic Streaming | General |
| Potomac Institute for Policy Studies | Governmental |
| Pak Institute for Peace Studies | Governmental |
| Police Integrated Patrol System | Governmental |
| Program In Population Studies | Governmental |
| Personnel Investigation Processing System | Governmental |
| Performance Information Procurement System | Governmental |
| Plans Integration Partitioning System | Governmental |
| Project on International Peace and Security | International |
