| Abbreviation | Definition |
|---|---|
| POCO | Panel of Conference Organizers |
| PONC | Packet Optical Network Conference |
| PONC | Packet Optical Networking Conference |
| POWC | Pour the Oil Worship Conference |
| POWR | Parliament Of the World's Religions |
| PPCA | Plastic Pipes Conference Association |
| PPCC | People's Political Consultative Conference |
| PPCOE | Pan Pacific Conference on Occupational Ergonomics |
| PPIC | Pulp and Paper Industry Conference |
| PPID | International Symposium on Plasma Process-Induced Damage |
| PPLC | Public Policy and Leadership Conference |
| PPLC | Public Policy Leadership Conference |
| PPSYST | IEEE Workshop on Measurement of Electrical Quantities in Pulse Power SYSTems |
| PREC | Public Radio Engineering Conference |
| PRFTS | Pacific Rim International Symposium on Fault Tolerant Systems |
| PRIC | Pacific Region Investment Conference |
| PRLC | Penn Reunion Leadership Conference |
| PRNDI | Public Radio News Directors Incorporated (conference) |
| PROCCE | Canadian PROGrammable Control Conference and Exhibition |
| PSAC | Pennsylvania State Athletic Conference |