| Abbreviation | Definition |
|---|---|
| LOL | Lolling On Lolza |
| LOT | Limit Of Technology |
| LOT | Longitude |
| LP | Lath and Plaster |
| LPD | Laser Projection Display |
| LPD | Lightning Protection Device |
| LQ | Lightning of Quantum |
| LRAM | Licentiate of the Royal Academy of Music |
| LRE | Linguistic Research And Engineering |
| LRSM | Licentiate of the Royal Schools of Music |
| LS | Laminated steel(as rolled steel) |
| LS | Liberal Studies |
| LSAPI | License Services Application Program Interface |
| LSR | Life Science Research |
| LT | Learning Technologies |
| LTTDS | Low Temperature Thermal Desorption System |
| LVN | Low Voltage Network |
| LWC | Light Weight Concrete |
| LX | Lux (Lx) |
| M | Mathematics |