| Abbreviation | Definition |
|---|---|
| LFT | Ligand-Field Theory |
| LFT | Low Frequency Transmission |
| LG | Life's Good |
| LGA | Land Grid Array |
| LGE | Light Generation Efficiency |
| LGE | Louisville Gas Electric |
| LGEU | Landing Gear Electronic Unit |
| LI | Laser Interferometry |
| LIC | Linear Integrated Circuit |
| LID | Leadless Inverted Device |
| LIDAR | LIght Detection And Ranging |
| LIES | Long Island Electrical Systems |
| LIF | Low Insertion Force |
| LIFE | Longitudinal Intra-Fascicular Electrode |
| LIFO | Last In, First Out |
| Li-ION | Lithium-ION (rechargeable battery) |
| LIM | Line concentrator module |
| LIM | Line Isolation Monitor |
| LIM | Linear Induction Magnet |
| LIM | Linear Induction Motor |