| PAFTA | Pacific Free Trade Area |
| PAFTAD | Pacific Trade & Development Conference |
| PATA | Pacific Asia Travel Association |
| PATCRA | Papua New Guinea-Australia Trade and Commercial Relations Agreement |
| PBEC | Pacific Basin Economic Conference |
| PBF | Pacific Business Forum (APEC) |
| PBR | Plant breeders' right |
| PECC | Pacific Economic Cooperation Council |
| PEO | Pacific Economic Outlook |
| PFC | Priority Foreign Country |
| PFP | Partners for Progress (APEC) |
| PGE | Permanent group of Experts |
| PIC | Prior informed consent |
| PITs | Partners in Transition (OECD) |
| PL480 | Public Law 480 (United States) |
| PMD | Processing, marketing and distribution (of commodities) |
| PMV | Passenger motor vehicle |
| PPA | Protocol of Provisional Application |
| PPM | Process and production methods |
| PRA | Pest risk assessment |
| PSE | Production subsidy equivalent |
| PSI | Pre-shipment inspection |
| PTA | Preferential Trading Arrangement |
| PTA | Preferential Trade Area for Eastern and Southern African States |