| Abbreviation | Definition |
|---|---|
| REEV | Range Extended Electric Vehicles |
| REEV | Range Extender Electric Vehicle |
| REFDES | Reference Designator |
| REFS | Regulatory Electronic Filing |
| REGF | Renewable Electrical Generation Facility |
| REI | Renta Electronic Invoice |
| REI | Requirement for Electrical Installation |
| REIL | Rajasthan Electronics and Instruments Limited |
| REIL | Rajasthan Electronics and Instruments, Limited |
| REIM | Records and Electronic Information Management |
| REIN | Repetitive Electrical Impulse Noise |
| REJASE | RE-using Junk As Something Else |
| REL | Radioactive Electron Laser |
| REL | Relay |
| REL | Release |
| RELITE | Rural Electric Leaders In Training Exchange |
| REM | Recyclability Evaluation Method |
| REM | Reflection Electron Microscopy |
| REMC | Randolph Electric Membership Corporation |
| REMC | Rural Electric Membership Corporation |