| L.E.M. | Laboratory of Economics and Management 
| Others |
| LEM | Laboratorio Elettronico Mobile
| Others |
| LEM | Laboratory Environment Model
| Others |
| LEM | Lan Expansion Module
| Others |
| LEM | Language Extension Module
| Others |
| LEM | Large Eddy Model
| Others |
| LEM | Launch Escape Monitor
| Others |
| LEM | Law Enforcement Mechanism
| Others |
| LEM | Law Enforcement Memorial
| Others |
| LEM | Law Enforcement Modificaton
| Others |
| LEM | Law Of Excluded Middle
| Others |
| LEM | Lay Eucharistic Minister
| Others |
| LEM | le Baron Medallion
| Others |
| LEM | le Mans
| Others |
| LEM | Leadership Exploration Meeting
| Others |
| LEM | League of Extraordinary Miniacs
| Others |
| LEM | Learnable Evolution Model
| Others |
| LEM | Lemmon Airport
| Others |
| Lem | Lemuel
| Others |
| LEM | Lentinula Edodes Mycelia
| Others |
| LEM | Lentinus Edodes Mycelia
| Others |
| LEM | Life Energy Motion
| Others |
| LEM | Life Extension Mix
| Others |
| LEM | Lifecycle Emissions Model
| Others |
| LEM | Light And Electron Microscopy
| Others |
| LEM | Light Easy Mobile
| Others |
| LEM | Light Effect Manager
| Others |
| LEM | Light Electric Mobile
| Others |
| LEM | Light Emotive Machine
| Others |
| LEM | Light Equipment Maintenance
| Others |
| LEM | Light Extinction Measure
| Others |
| LEM | Light Extinction Measurement
| Others |
| LEM | Line Extender Module
| Others |
| LEM | Linear Electric Motor
| Others |
| LEM | Link Error Monitor
| Others |
| LEM | Liquid Elastomeric Moulding
| Others |
| LEM | Local Effect Model
| Others |
| LEM | Local Event Management
| Others |
| LEM | Location Efficient Mortgage
| Others |
| LEM | Log and Event Manager
| Others |
| LEM | Log Event Manager
| Others |
| LEM | Logic For Eco Modeling
| Others |
| LEM | Longitudinal Engine Mount
| Others |
| LEM | Low End Mac
| Others |
| LEM | Low Equity Margin
| Others |
| LEM | Lunar Entry Mode
| Others |
| LEM | Lunar Escape Module
| Others |
| LEM | Lunar Excursion Module
| Others |
| LEM | Lunar Exploration Module
| Others |
| LEM | Lutheran Episcopal Ministry
| Others |
| LEM | The LEarning Museum network project
| Others |