| Abbreviation | Definition |
|---|---|
| REHS | Registered Environmental Health Specialists |
| REIA | Rapid Environmental Impact Assessment |
| REIR | Request for Environmental Impact Review |
| RELC | Residential Environmental Learning Centers |
| RELP | Rising Environmental Leaders Program |
| REMA | Rwanda Environmental Management Agency |
| REMA | Rwanda Environmental Management Authority |
| RENEW | Research and Ethical Network Embracing Water |
| REPA | Registered Environmental Property Assessor |
| REPA | Resource and Environmental Profile Analysis |
| REPD | Regional Environmental Protection Department |
| REPI | Readiness and Environmental Protection Initiative |
| RERA | Responsible Electronics Recycling Act |
| RERH | Renewable Energy Ready Homes |
| RES | Resource Environmental |
| RES | Resource Environmental Solutions |
| RESAS | Rural and Environmental Science and Analytical Services |
| RESCUE | Rivers And Environmental Spaces Clean Up Event |
| RESPECT | Respect Equality Socialism Peace Environmentalism Community Trade |
| RETA | Reducing Environmental Triggers for Asthma |