CRRR
| Acronym | Definition |
|---|---|
| CRRR | Certified Return Receipt Requested (USPS) |
| CRRR | Connecticut River Raft Race (Portland, CT) |
| CRRR | Copyright and Related Rights Regulations (intellectual property law; UK) |
| CRRR | Community Recycling and Resource Recovery |
| CRRR | Chemical Risk Review and Reduction (US EPA) |
| CRRR | Colorado Rhodesian Ridgeback Rescue (Littleton, CO) |
| CRRR | Continuous Release Reporting Regulation (US EPA) |