| Abbreviation | Definition |
|---|---|
| LP | Luminous Paint |
| LPF | Laminated Paint Finish |
| LR | Laminated Rock |
| LR | Living Room |
| LRBI | Long Reach Beam In |
| LRFD | Load and Resistance Factor Design |
| LRTI | Ligament Reconstruction and Tendon Interposition |
| LRTI | Ligament Reconstruction Tendon Interposition |
| LS | Land Slip |
| LS | Landslide |
| LSAW | Longitudinally Submerged Arc Welding |
| LSBA | Level Sustainability Building Assessment |
| LSDC | Low Slump Dense Concrete |
| LSL | Laminated Strand Lumber |
| LSM | Lime Sand Mortar |
| LSSB | Large Secondary Side Break |
| LTAR | Long Term Asset Replacement |
| LTB | Lateral Torsional Buckling |
| LUCR | Land Use Construction Review |
| LUTR | lower urinary tract reconstruction |