| Abbreviation | Definition |
|---|---|
| PPR | Pollution Prevention and Response |
| PPRA | Pavement Preservation Recycling Alliance |
| PPRC | Pollution Prevention Resource Center |
| PPW | Packaging and Packaging Waste |
| PR4 | Permit Regulation (ref 4 - environmental) |
| PRASA | Paper Recycling Association of South Africa |
| PRD | Potomac River Drainage |
| PRE | Pacific Recycling Exchange |
| PREP | Potentially Reduced Exposure Product |
| PREPP | Pearl River Estuary Pollution Project |
| PRF | Producer Recycling Fund |
| PRIA | Pesticide Registration Improvement Act |
| PRL | Pollute River and Lake |
| PRM | power recycling mirror |
| PROCEED | policy regulatory and organizational constructs in education and environmental development |
| PRP | Party Responsible for Pollutants |
| PRP | Potentailly Responsible Party |
| PRRP | Puerto Rico Recycling Partnership |
| PRS | Plastics Recycling Show |
| PRSE | Plastics Recycling Show Europe |