| LEMS | Laboratory Emissions Monitoring System
| Others |
| LEMS | Labour Export Management System
| Others |
| LEMS | Lake Elkhorn Middle School
| Others |
| LEMS | Lambert Eaton Myasthenic Syndrome
| Others |
| LEMS | Lambert-Eaton myasthenic syndrome
| Others |
| LEMS | Landstuhl Elementary Middle School
| Others |
| LEMS | Larchwood Emergency Medical Service
| Others |
| LEMS | Law Enforcement Management System
| Others |
| LEMS | Law Enforcement Message Switch
| Others |
| LEMS | Local Energy Measurement Stations
| Others |
| LEMS | Low Emission Mobile System
| Others |
| LEMS | Low Energy Mass Spectrometry
| Others |
| LEMS | Low Entropy Model Specification
| Others |
| LEMS | Lower Extremity Monitoring Suit
| Others |
| LEMS | Lugoff Elgin Middle School
| Others |