| Abbreviation | Definition |
|---|---|
| LEEL | Lloyd Electric Engineering Ltd |
| LEF | Load Effect Free |
| LEF | Loud Electronic Ferocious |
| LEGF | Large Electric Generating Facilities |
| LEIS | Low Energy Ion Scattering |
| LELD | Littleton Electric Light Department |
| LEM | Light Electric Mobile |
| LEM | Light Emotive Machine |
| LEME | London Electronic Music Event |
| LEMUR | League of Electronic Musical Urban Robots |
| LEP | Light Emitting Polymer |
| LEP | Lissajous Electron Plasma |
| LEPTS | Lao Electric Power Technical Standard |
| LEPTS | Lao Electric Power Technical Standards |
| LER | Lunar Electric Rover |
| LES | Lincoln Electric System |
| LESP | Linear Electric Submersible Pump |
| LET | Lorentz force eddy current testing |
| LEU | Lineside Electronic Unit |
| LEVT | Light Electric Vehicle Technologies |