| Rank | Abbreviation | Meaning |
|---|
| ***** | LCSM | Lin's Cupric Sulfate Medium
| |
| *** | LCSM | La Communication Sur-Mesure (French: Communication On-Measure)
| |
| *** | LCSM | Life Cycle System Management
| |
| *** | LCSM | Laboratoire de Chimie du Solide Minéral
| |
| *** | LCSM | Life Cycle Service Management (Karlsruhe, Germany)
| |
| *** | LCSM | Land Capabilities Spectrum Model
| |
| *** | LCSM | Legislative Commission on Statutory Mandates
| |
| ** | LCSM | Lenz Coal and Shiloh Mine
| |
| ** | LCSM | Life Cycle Sustainment Manager
| |
| ** | LCSM | Lick Creek Slope Mine
| |
| ** | LCSM | Link Connection Subsystem Manager (computer science)
| |
| * | LCSM | Lake Creek Slope Mine
| |
| * | LCSM | Laser Confocal Scanning Microscopy
| |
| * | LCSM | Lord Commander Solar Macharius (gaming)
| |
| * | LCSM | Longitudinal Crack Sealing Machine
| |
| * | LCSM | Landing Craft, Support, Medium (military ships)
| |
| * | LCSM | Little Creek Slope Mine
| |
| * | LCSM | Lillie Creek Slope Mine
| |
| * | LCSM | Laser Confocal Scanning Microscope
| |
| * | LCSM | Lever Clutch Safety Mechanism
| |
| * | LCSM | Lanthrop Coal Strip Mine
| |
| * | LCSM | Lumaghi Cantine Slope Mine
| |